TY  - JOUR
AU  - Dinić, Ivana
AU  - Vuković, Marina
AU  - Rabanal, Maria Eugenia
AU  - Milošević, Milica
AU  - Bukumira, Marta
AU  - Tomić, Nina
AU  - Tomić, Miloš
AU  - Mančić, Lidija
AU  - Ignjatović, Nenad
PY  - 2024
UR  - https://dais.sanu.ac.rs/123456789/16211
AB  - Y0.8−xGdxF3:Yb/Er mesocrystals with a biocompatible surface and diverse morphological characteristics were successfully synthesized using chitosan-assisted solvothermal processing. Their structural properties, studied using X-ray powder diffraction, Fourier transform infrared spectroscopy, scanning and transmission electron microscopy and energy dispersive X-ray analysis, were further correlated with the up-conversion emission (λexc = 976 nm) recorded in function of temperature. Based on the change in the visible green emissions originating from the thermally coupled 2H11/2 and 4S3/2 levels of Er3+, the corresponding LIR was acquired in the physiologically relevant range of temperatures (25–50 °C). The detected absolute sensitivity of about 0.0042 °C−1, along with the low cytotoxicity toward both normal human lung fibroblasts (MRC-5) and cancerous lung epithelial (A549) cells, indicate a potential for use in temperature sensing in biomedicine. Additionally, their enhanced internalization in cells, without suppression of cell viability, enabled in vitro labeling of cancer and healthy cells upon 976 nm laser irradiation.
PB  - Basel : MDPI AG
T2  - Journal of Functional Biomaterials
T1  - Temperature Sensing Properties of Biocompatible Yb/Er-Doped GdF3 and YF3 Mesocrystals
SP  - 6
VL  - 15
IS  - 1
DO  - 10.3390/jfb15010006
UR  - https://hdl.handle.net/21.15107/rcub_dais_16211
ER  - 

@article{
author = "Dinić, Ivana and Vuković, Marina and Rabanal, Maria Eugenia and Milošević, Milica and Bukumira, Marta and Tomić, Nina and Tomić, Miloš and Mančić, Lidija and Ignjatović, Nenad",
year = "2024",
abstract = "Y0.8−xGdxF3:Yb/Er mesocrystals with a biocompatible surface and diverse morphological characteristics were successfully synthesized using chitosan-assisted solvothermal processing. Their structural properties, studied using X-ray powder diffraction, Fourier transform infrared spectroscopy, scanning and transmission electron microscopy and energy dispersive X-ray analysis, were further correlated with the up-conversion emission (λexc = 976 nm) recorded in function of temperature. Based on the change in the visible green emissions originating from the thermally coupled 2H11/2 and 4S3/2 levels of Er3+, the corresponding LIR was acquired in the physiologically relevant range of temperatures (25–50 °C). The detected absolute sensitivity of about 0.0042 °C−1, along with the low cytotoxicity toward both normal human lung fibroblasts (MRC-5) and cancerous lung epithelial (A549) cells, indicate a potential for use in temperature sensing in biomedicine. Additionally, their enhanced internalization in cells, without suppression of cell viability, enabled in vitro labeling of cancer and healthy cells upon 976 nm laser irradiation.",
publisher = "Basel : MDPI AG",
journal = "Journal of Functional Biomaterials",
title = "Temperature Sensing Properties of Biocompatible Yb/Er-Doped GdF3 and YF3 Mesocrystals",
pages = "6",
volume = "15",
number = "1",
doi = "10.3390/jfb15010006",
url = "https://hdl.handle.net/21.15107/rcub_dais_16211"
}

Dinić, I., Vuković, M., Rabanal, M. E., Milošević, M., Bukumira, M., Tomić, N., Tomić, M., Mančić, L.,& Ignjatović, N.. (2024). Temperature Sensing Properties of Biocompatible Yb/Er-Doped GdF3 and YF3 Mesocrystals. in Journal of Functional Biomaterials
Basel : MDPI AG., 15(1), 6.
https://doi.org/10.3390/jfb15010006
https://hdl.handle.net/21.15107/rcub_dais_16211

Dinić I, Vuković M, Rabanal ME, Milošević M, Bukumira M, Tomić N, Tomić M, Mančić L, Ignjatović N. Temperature Sensing Properties of Biocompatible Yb/Er-Doped GdF3 and YF3 Mesocrystals. in Journal of Functional Biomaterials. 2024;15(1):6.
doi:10.3390/jfb15010006
https://hdl.handle.net/21.15107/rcub_dais_16211 .

Dinić, Ivana, Vuković, Marina, Rabanal, Maria Eugenia, Milošević, Milica, Bukumira, Marta, Tomić, Nina, Tomić, Miloš, Mančić, Lidija, Ignjatović, Nenad, "Temperature Sensing Properties of Biocompatible Yb/Er-Doped GdF3 and YF3 Mesocrystals" in Journal of Functional Biomaterials, 15, no. 1 (2024):6,
https://doi.org/10.3390/jfb15010006 .,
https://hdl.handle.net/21.15107/rcub_dais_16211 .

TY  - CONF
AU  - Đinović, Zoran
AU  - Pavelka, Robert
AU  - Tomić, Miloš
AU  - Spinzl, Georg
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/16294
AB  - Currently, more than 1.5 billion people (nearly 20% of the world population) are living with hearing loss. By 2050, nearly 2.5 billion people are projected to have some degree of hearing loss and at least 700 million will require hearing rehabilitation. While conventional hearing aids greatly improve the lives of people with hearing difficulties, they cause problems by being worn externally (e.g. stigma, bathing). We present here an innovative implantable hearing aid microphone that, when combined with a cochlear implant, could represent a fully internal hearing aid. To achieve an internal microphone, our technology utilizes a novel fiber-optic approach. The fiber-optic sensor is a kind of an optical vibrometer aimed to be used as a totally implantable fiber-optic microphone for hearing aids. The sensor is invisible as it is placed inside the human middle ear and is capable to detect the amplitude of the incus vibrations over the range of few picometers to a couple of nanometers, which corresponds to an SPL of about 35 to 90 dB. The basic operation principle is high-coherence fiber-optic interferometry. Online signal processing allows permanent conversion of the acoustical into an electrical signal over the audio frequency range from 100 Hz to 8 kHz in real time.
PB  - BIT Group Global
C3  - The 9th Annual World Congress of Advanced Materials-2023, May 08-10, 2023, Tokyo, Japan
T1  - Totally Implantable Fiber-Optic Sensing System (TIFOS) - A Step Toward Totally Implantable Hearing Aids (TIHA)
UR  - https://hdl.handle.net/21.15107/rcub_dais_16294
ER  - 

@conference{
author = "Đinović, Zoran and Pavelka, Robert and Tomić, Miloš and Spinzl, Georg",
year = "2023",
abstract = "Currently, more than 1.5 billion people (nearly 20% of the world population) are living with hearing loss. By 2050, nearly 2.5 billion people are projected to have some degree of hearing loss and at least 700 million will require hearing rehabilitation. While conventional hearing aids greatly improve the lives of people with hearing difficulties, they cause problems by being worn externally (e.g. stigma, bathing). We present here an innovative implantable hearing aid microphone that, when combined with a cochlear implant, could represent a fully internal hearing aid. To achieve an internal microphone, our technology utilizes a novel fiber-optic approach. The fiber-optic sensor is a kind of an optical vibrometer aimed to be used as a totally implantable fiber-optic microphone for hearing aids. The sensor is invisible as it is placed inside the human middle ear and is capable to detect the amplitude of the incus vibrations over the range of few picometers to a couple of nanometers, which corresponds to an SPL of about 35 to 90 dB. The basic operation principle is high-coherence fiber-optic interferometry. Online signal processing allows permanent conversion of the acoustical into an electrical signal over the audio frequency range from 100 Hz to 8 kHz in real time.",
publisher = "BIT Group Global",
journal = "The 9th Annual World Congress of Advanced Materials-2023, May 08-10, 2023, Tokyo, Japan",
title = "Totally Implantable Fiber-Optic Sensing System (TIFOS) - A Step Toward Totally Implantable Hearing Aids (TIHA)",
url = "https://hdl.handle.net/21.15107/rcub_dais_16294"
}

Đinović, Z., Pavelka, R., Tomić, M.,& Spinzl, G.. (2023). Totally Implantable Fiber-Optic Sensing System (TIFOS) - A Step Toward Totally Implantable Hearing Aids (TIHA). in The 9th Annual World Congress of Advanced Materials-2023, May 08-10, 2023, Tokyo, Japan
BIT Group Global..
https://hdl.handle.net/21.15107/rcub_dais_16294

Đinović Z, Pavelka R, Tomić M, Spinzl G. Totally Implantable Fiber-Optic Sensing System (TIFOS) - A Step Toward Totally Implantable Hearing Aids (TIHA). in The 9th Annual World Congress of Advanced Materials-2023, May 08-10, 2023, Tokyo, Japan. 2023;.
https://hdl.handle.net/21.15107/rcub_dais_16294 .

Đinović, Zoran, Pavelka, Robert, Tomić, Miloš, Spinzl, Georg, "Totally Implantable Fiber-Optic Sensing System (TIFOS) - A Step Toward Totally Implantable Hearing Aids (TIHA)" in The 9th Annual World Congress of Advanced Materials-2023, May 08-10, 2023, Tokyo, Japan (2023),
https://hdl.handle.net/21.15107/rcub_dais_16294 .

TY  - CHAP
AU  - Đinović, Zoran
AU  - Tomić, Miloš
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/16292
AB  - We present a microfluidic platform based on a fiber-optic three-way Mach-Zehnder interferometer (MZI), aimed to measurement of the refractive index (RI) of liquids and characterization of suspended glass particles (cylinders) simultaneously. The measurement principle is based on low coherence interferometry, where the maximum position of the interferogram Gaussian envelope  depends on the optical path difference (OPD) between the measuring and the reference arm of the MZI. An algorithm was developed for calculating the refractive index of liquids and glass particles, as well as for finding the particle diameter from the raw photodetector signals. The physical particle diameter is calculated from the measured particle transit time while passing through the test beam. We found very good agreement between the experimental results and the literature data on the examined liquids refractive index and dimensions and refractive index of suspended particles. The accuracy of the refractive index measurement was about 1 %, mainly determined by the accuracy of position reading of the mechanical scanner. The minimal sample volume can be as small as 1 µl is capable of measuring the refractive index of different liquids and gases and their suspensions simultaneously. The proposed method is attractive for label-free biological, biochemical and chemical sensing because of its high sensitivity and accuracy and  self-calibrating feature.
PB  - B P International
T1  - Fundamental Research and Application of Physical Science Vol. 5
SP  - 145
EP  - 174
DO  - 10.9734/bpi/fraps/v5/5391C
UR  - https://hdl.handle.net/21.15107/rcub_dais_16292
ER  - 

@inbook{
editor = "Kassmi, Prof. Khalil",
author = "Đinović, Zoran and Tomić, Miloš",
year = "2023",
abstract = "We present a microfluidic platform based on a fiber-optic three-way Mach-Zehnder interferometer (MZI), aimed to measurement of the refractive index (RI) of liquids and characterization of suspended glass particles (cylinders) simultaneously. The measurement principle is based on low coherence interferometry, where the maximum position of the interferogram Gaussian envelope  depends on the optical path difference (OPD) between the measuring and the reference arm of the MZI. An algorithm was developed for calculating the refractive index of liquids and glass particles, as well as for finding the particle diameter from the raw photodetector signals. The physical particle diameter is calculated from the measured particle transit time while passing through the test beam. We found very good agreement between the experimental results and the literature data on the examined liquids refractive index and dimensions and refractive index of suspended particles. The accuracy of the refractive index measurement was about 1 %, mainly determined by the accuracy of position reading of the mechanical scanner. The minimal sample volume can be as small as 1 µl is capable of measuring the refractive index of different liquids and gases and their suspensions simultaneously. The proposed method is attractive for label-free biological, biochemical and chemical sensing because of its high sensitivity and accuracy and  self-calibrating feature.",
publisher = "B P International",
booktitle = "Fundamental Research and Application of Physical Science Vol. 5",
pages = "145-174",
doi = "10.9734/bpi/fraps/v5/5391C",
url = "https://hdl.handle.net/21.15107/rcub_dais_16292"
}

Kassmi, Prof. K., Đinović, Z.,& Tomić, M.. (2023). Fundamental Research and Application of Physical Science Vol. 5. 
B P International., 145-174.
https://doi.org/10.9734/bpi/fraps/v5/5391C
https://hdl.handle.net/21.15107/rcub_dais_16292

Kassmi PK, Đinović Z, Tomić M. Fundamental Research and Application of Physical Science Vol. 5. 2023;:145-174.
doi:10.9734/bpi/fraps/v5/5391C
https://hdl.handle.net/21.15107/rcub_dais_16292 .

Kassmi, Prof. Khalil, Đinović, Zoran, Tomić, Miloš, "Fundamental Research and Application of Physical Science Vol. 5" (2023):145-174,
https://doi.org/10.9734/bpi/fraps/v5/5391C .,
https://hdl.handle.net/21.15107/rcub_dais_16292 .

TY  - JOUR
AU  - Stamenković, Tijana
AU  - Dinić, Ivana
AU  - Vuković, Marina
AU  - Radmilović, Nadežda
AU  - Barudžija, Tanja
AU  - Tomić, Miloš
AU  - Mančić, Lidija
AU  - Lojpur, Vesna
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/15138
AB  - In this investigation, samples of strontium-gadolinium-oxide (SrGd2O4) doped with different Yb3+ (2, 4 and 6 at%) and constant Ho3+ (1 at%) contents and co-doped with Bi3+ (2 at%) were prepared using the glycine-assisted sol–gel method. The pure orthorhombic SrGd2O4 phase, space group Pnma, was revealed using X-ray diffraction in all samples. Transmission electron microscopy discovered agglomerated clusters of spherical particles measuring approximately 150 nm in size. The inclusion of Bi3+ ions into the structure influenced the morphology since the formation of larger grains was observed, with sizes reaching up to ∼1.7 μm. The uniform distribution of all constitutive elements was confirmed by energy-dispersive X-ray spectroscopy. In all samples, up-conversion emission spectra revealed two dominant green (540 and 550 nm), red (671 nm), and infrared (758 nm) emission lines, due to the 5F4,5S2→5I8, 5F5→5I8, and 5F4,5S2 → 5I7 transitions, respectively. The sample co-doped with Bi3+ showed the most intense photoluminescent emissions, shorter luminescence decay, and the highest quantum yield. Additionally, a significant decrease in the energy band gap value was detected using diffuse reflectance spectroscopy for this sample. Methylene blue was used as a test pollutant to investigate its photocatalytic efficiency under simulated sunlight irradiation. The results show that Bi3+ co-doping deteriorates the photocatalytic efficiency of the SrGd2O4:Yb3+/Ho3+ phase by reducing hydroxyl radical formation.
PB  - Elsevier
T2  - Ceramics International
T1  - Effect of Bi3+co-doping on the up-converting and photocatalytic properties of SrGd2O4:Yb3+/Ho3+ phase
SP  - 37758
EP  - 37767
VL  - 49
IS  - 23
DO  - 10.1016/j.ceramint.2023.09.103
UR  - https://hdl.handle.net/21.15107/rcub_dais_15138
ER  - 

@article{
author = "Stamenković, Tijana and Dinić, Ivana and Vuković, Marina and Radmilović, Nadežda and Barudžija, Tanja and Tomić, Miloš and Mančić, Lidija and Lojpur, Vesna",
year = "2023",
abstract = "In this investigation, samples of strontium-gadolinium-oxide (SrGd2O4) doped with different Yb3+ (2, 4 and 6 at%) and constant Ho3+ (1 at%) contents and co-doped with Bi3+ (2 at%) were prepared using the glycine-assisted sol–gel method. The pure orthorhombic SrGd2O4 phase, space group Pnma, was revealed using X-ray diffraction in all samples. Transmission electron microscopy discovered agglomerated clusters of spherical particles measuring approximately 150 nm in size. The inclusion of Bi3+ ions into the structure influenced the morphology since the formation of larger grains was observed, with sizes reaching up to ∼1.7 μm. The uniform distribution of all constitutive elements was confirmed by energy-dispersive X-ray spectroscopy. In all samples, up-conversion emission spectra revealed two dominant green (540 and 550 nm), red (671 nm), and infrared (758 nm) emission lines, due to the 5F4,5S2→5I8, 5F5→5I8, and 5F4,5S2 → 5I7 transitions, respectively. The sample co-doped with Bi3+ showed the most intense photoluminescent emissions, shorter luminescence decay, and the highest quantum yield. Additionally, a significant decrease in the energy band gap value was detected using diffuse reflectance spectroscopy for this sample. Methylene blue was used as a test pollutant to investigate its photocatalytic efficiency under simulated sunlight irradiation. The results show that Bi3+ co-doping deteriorates the photocatalytic efficiency of the SrGd2O4:Yb3+/Ho3+ phase by reducing hydroxyl radical formation.",
publisher = "Elsevier",
journal = "Ceramics International",
title = "Effect of Bi3+co-doping on the up-converting and photocatalytic properties of SrGd2O4:Yb3+/Ho3+ phase",
pages = "37758-37767",
volume = "49",
number = "23",
doi = "10.1016/j.ceramint.2023.09.103",
url = "https://hdl.handle.net/21.15107/rcub_dais_15138"
}

Stamenković, T., Dinić, I., Vuković, M., Radmilović, N., Barudžija, T., Tomić, M., Mančić, L.,& Lojpur, V.. (2023). Effect of Bi3+co-doping on the up-converting and photocatalytic properties of SrGd2O4:Yb3+/Ho3+ phase. in Ceramics International
Elsevier., 49(23), 37758-37767.
https://doi.org/10.1016/j.ceramint.2023.09.103
https://hdl.handle.net/21.15107/rcub_dais_15138

Stamenković T, Dinić I, Vuković M, Radmilović N, Barudžija T, Tomić M, Mančić L, Lojpur V. Effect of Bi3+co-doping on the up-converting and photocatalytic properties of SrGd2O4:Yb3+/Ho3+ phase. in Ceramics International. 2023;49(23):37758-37767.
doi:10.1016/j.ceramint.2023.09.103
https://hdl.handle.net/21.15107/rcub_dais_15138 .

Stamenković, Tijana, Dinić, Ivana, Vuković, Marina, Radmilović, Nadežda, Barudžija, Tanja, Tomić, Miloš, Mančić, Lidija, Lojpur, Vesna, "Effect of Bi3+co-doping on the up-converting and photocatalytic properties of SrGd2O4:Yb3+/Ho3+ phase" in Ceramics International, 49, no. 23 (2023):37758-37767,
https://doi.org/10.1016/j.ceramint.2023.09.103 .,
https://hdl.handle.net/21.15107/rcub_dais_15138 .

TY  - JOUR
AU  - Stamenković, Tijana
AU  - Radmilović, Nadežda
AU  - Prekajski-Đorđević, Marija D.
AU  - Rabasović, Mihailo
AU  - Dinić, Ivana
AU  - Tomić, Miloš
AU  - Lojpur, Vesna
AU  - Mančić, Lidija
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/13491
AB  - Nanopowders of up-conversion SrGd2O4 orthorhombic (Pnma) phase co-doped with different Yb3+ (1, 2.5 and 5 at%) and constant Er3+ (0.5 at%) ions were successfully prepared via sol-gel assisted combustion. Rietveld refinement indicated unit cell lattice parameters increase with Yb3+ and Er3+ ions doping. Scanning transmission electron microscopy with corresponding energy-dispersive X-ray spectroscopy revealed that obtained powders are composed of agglomerated nanoparticles that have a uniform distribution of all constituting elements. Photoluminescence measurements implied intensification of the up-conversion (UC) emission in the visible part of spectrum with the increase of Yb3+ content, which is followed by a significant change in the green to red ratio. Two-photon UC processes are established as a result of Er3+ f-f electronic transitions: green emission at 523 and 551 nm (2H11/2, 4S3/2 → 4I15/2) as well as a red emission at 661 nm (4F9/2 → 4I15/2). The highest value of absolute quantum yield of 0.055% is determined for SrGd2O4 nanoparticles doped with 0.5 at% of Er3+ and co-doped with 5 at% of Yb3+ (λexc = 976 nm, power density 200 W/cm2).
T2  - Journal of Luminescence
T1  - Quantum yield and energy transfer in up-conversion SrGd2O4:Yb, Er nanoparticles obtained via sol-gel assisted combustion
SP  - 119491
VL  - 253
DO  - 10.1016/j.jlumin.2022.119491
UR  - https://hdl.handle.net/21.15107/rcub_dais_13491
ER  - 

@article{
author = "Stamenković, Tijana and Radmilović, Nadežda and Prekajski-Đorđević, Marija D. and Rabasović, Mihailo and Dinić, Ivana and Tomić, Miloš and Lojpur, Vesna and Mančić, Lidija",
year = "2023",
abstract = "Nanopowders of up-conversion SrGd2O4 orthorhombic (Pnma) phase co-doped with different Yb3+ (1, 2.5 and 5 at%) and constant Er3+ (0.5 at%) ions were successfully prepared via sol-gel assisted combustion. Rietveld refinement indicated unit cell lattice parameters increase with Yb3+ and Er3+ ions doping. Scanning transmission electron microscopy with corresponding energy-dispersive X-ray spectroscopy revealed that obtained powders are composed of agglomerated nanoparticles that have a uniform distribution of all constituting elements. Photoluminescence measurements implied intensification of the up-conversion (UC) emission in the visible part of spectrum with the increase of Yb3+ content, which is followed by a significant change in the green to red ratio. Two-photon UC processes are established as a result of Er3+ f-f electronic transitions: green emission at 523 and 551 nm (2H11/2, 4S3/2 → 4I15/2) as well as a red emission at 661 nm (4F9/2 → 4I15/2). The highest value of absolute quantum yield of 0.055% is determined for SrGd2O4 nanoparticles doped with 0.5 at% of Er3+ and co-doped with 5 at% of Yb3+ (λexc = 976 nm, power density 200 W/cm2).",
journal = "Journal of Luminescence",
title = "Quantum yield and energy transfer in up-conversion SrGd2O4:Yb, Er nanoparticles obtained via sol-gel assisted combustion",
pages = "119491",
volume = "253",
doi = "10.1016/j.jlumin.2022.119491",
url = "https://hdl.handle.net/21.15107/rcub_dais_13491"
}

Stamenković, T., Radmilović, N., Prekajski-Đorđević, M. D., Rabasović, M., Dinić, I., Tomić, M., Lojpur, V.,& Mančić, L.. (2023). Quantum yield and energy transfer in up-conversion SrGd2O4:Yb, Er nanoparticles obtained via sol-gel assisted combustion. in Journal of Luminescence, 253, 119491.
https://doi.org/10.1016/j.jlumin.2022.119491
https://hdl.handle.net/21.15107/rcub_dais_13491

Stamenković T, Radmilović N, Prekajski-Đorđević MD, Rabasović M, Dinić I, Tomić M, Lojpur V, Mančić L. Quantum yield and energy transfer in up-conversion SrGd2O4:Yb, Er nanoparticles obtained via sol-gel assisted combustion. in Journal of Luminescence. 2023;253:119491.
doi:10.1016/j.jlumin.2022.119491
https://hdl.handle.net/21.15107/rcub_dais_13491 .

Stamenković, Tijana, Radmilović, Nadežda, Prekajski-Đorđević, Marija D., Rabasović, Mihailo, Dinić, Ivana, Tomić, Miloš, Lojpur, Vesna, Mančić, Lidija, "Quantum yield and energy transfer in up-conversion SrGd2O4:Yb, Er nanoparticles obtained via sol-gel assisted combustion" in Journal of Luminescence, 253 (2023):119491,
https://doi.org/10.1016/j.jlumin.2022.119491 .,
https://hdl.handle.net/21.15107/rcub_dais_13491 .

TY  - JOUR
AU  - Mančić, Lidija
AU  - Almeida, Lucas A.
AU  - Machado, Tamires M.
AU  - Gil-Londoño, Jessica
AU  - Dinić, Ivana
AU  - Tomić, Miloš
AU  - Marković, Smilja
AU  - Jardim, Paula
AU  - Marinkovic, Bojan A.
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/14553
AB  - Novel hybrid core-shell structures, in which up-converting (UC) NaYF4:Yb,Tm core converts near-infrared (NIR) to visible (Vis) light via multiphoton up-conversion processes, while anatase TiO2-acetylacetonate (TiO2-Acac) shell ensures absorption of the Vis light through direct injection of excited electrons from the highest-occupied-molecular-orbital (HOMO) of Acac into the TiO2 conduction band (CB), were successfully synthesized by a two-step wet chemical route. Synthesized NaYF4:Yb,Tm@TiO2-Acac powders were characterized by X-ray powder diffraction, thermogravimetric analysis, scanning and transmission electron microscopy, diffuse-reflectance spectroscopy, Fourier transform infrared spectroscopy, and photoluminescence emission measurement. Tetracycline, as a model drug, was used to investigate the photocatalytic efficiencies of the core-shell structures under irradiation of reduced power Vis and NIR spectra. It was shown that the removal of tetracycline is accompanied by the formation of intermediates, which formed immediately after bringing the drug into contact with the novel hybrid core-shell structures. As a result, ~80% of tetracycline is removed from the solution after 6 h.
PB  - Basel : MDPI AG
T2  - International Journal of Molecular Sciences
T1  - Tetracycline Removal through the Synergy of Catalysis and Photocatalysis by Novel NaYF4:Yb,Tm@TiO2-Acetylacetone Hybrid Core-Shell Structures
SP  - 9441
VL  - 24
IS  - 11
DO  - 10.3390/ijms24119441
UR  - https://hdl.handle.net/21.15107/rcub_dais_14553
ER  - 

@article{
author = "Mančić, Lidija and Almeida, Lucas A. and Machado, Tamires M. and Gil-Londoño, Jessica and Dinić, Ivana and Tomić, Miloš and Marković, Smilja and Jardim, Paula and Marinkovic, Bojan A.",
year = "2023",
abstract = "Novel hybrid core-shell structures, in which up-converting (UC) NaYF4:Yb,Tm core converts near-infrared (NIR) to visible (Vis) light via multiphoton up-conversion processes, while anatase TiO2-acetylacetonate (TiO2-Acac) shell ensures absorption of the Vis light through direct injection of excited electrons from the highest-occupied-molecular-orbital (HOMO) of Acac into the TiO2 conduction band (CB), were successfully synthesized by a two-step wet chemical route. Synthesized NaYF4:Yb,Tm@TiO2-Acac powders were characterized by X-ray powder diffraction, thermogravimetric analysis, scanning and transmission electron microscopy, diffuse-reflectance spectroscopy, Fourier transform infrared spectroscopy, and photoluminescence emission measurement. Tetracycline, as a model drug, was used to investigate the photocatalytic efficiencies of the core-shell structures under irradiation of reduced power Vis and NIR spectra. It was shown that the removal of tetracycline is accompanied by the formation of intermediates, which formed immediately after bringing the drug into contact with the novel hybrid core-shell structures. As a result, ~80% of tetracycline is removed from the solution after 6 h.",
publisher = "Basel : MDPI AG",
journal = "International Journal of Molecular Sciences",
title = "Tetracycline Removal through the Synergy of Catalysis and Photocatalysis by Novel NaYF4:Yb,Tm@TiO2-Acetylacetone Hybrid Core-Shell Structures",
pages = "9441",
volume = "24",
number = "11",
doi = "10.3390/ijms24119441",
url = "https://hdl.handle.net/21.15107/rcub_dais_14553"
}

Mančić, L., Almeida, L. A., Machado, T. M., Gil-Londoño, J., Dinić, I., Tomić, M., Marković, S., Jardim, P.,& Marinkovic, B. A.. (2023). Tetracycline Removal through the Synergy of Catalysis and Photocatalysis by Novel NaYF4:Yb,Tm@TiO2-Acetylacetone Hybrid Core-Shell Structures. in International Journal of Molecular Sciences
Basel : MDPI AG., 24(11), 9441.
https://doi.org/10.3390/ijms24119441
https://hdl.handle.net/21.15107/rcub_dais_14553

Mančić L, Almeida LA, Machado TM, Gil-Londoño J, Dinić I, Tomić M, Marković S, Jardim P, Marinkovic BA. Tetracycline Removal through the Synergy of Catalysis and Photocatalysis by Novel NaYF4:Yb,Tm@TiO2-Acetylacetone Hybrid Core-Shell Structures. in International Journal of Molecular Sciences. 2023;24(11):9441.
doi:10.3390/ijms24119441
https://hdl.handle.net/21.15107/rcub_dais_14553 .

Mančić, Lidija, Almeida, Lucas A., Machado, Tamires M., Gil-Londoño, Jessica, Dinić, Ivana, Tomić, Miloš, Marković, Smilja, Jardim, Paula, Marinkovic, Bojan A., "Tetracycline Removal through the Synergy of Catalysis and Photocatalysis by Novel NaYF4:Yb,Tm@TiO2-Acetylacetone Hybrid Core-Shell Structures" in International Journal of Molecular Sciences, 24, no. 11 (2023):9441,
https://doi.org/10.3390/ijms24119441 .,
https://hdl.handle.net/21.15107/rcub_dais_14553 .

TY  - JOUR
AU  - Stamenković, Tijana
AU  - Radmilović, Nadežda
AU  - Prekajski Đorđević, Marija D.
AU  - Rabasović, Mihailo
AU  - Dinić, Ivana
AU  - Tomić, Miloš
AU  - Lojpur, Vesna
AU  - Mančić, Lidija
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/14550
AB  - Nanopowders of up-conversion SrGd2O4 orthorhombic (Pnma) phase co-doped with different Yb3+ (1, 2.5 and 5 at%) and constant Er3+ (0.5 at%) ions were successfully prepared via sol-gel assisted combustion. Rietveld refinement indicated unit cell lattice parameters increase with Yb3+ and Er3+ ions doping. Scanning transmission electron microscopy with corresponding energy-dispersive X-ray spectroscopy revealed that obtained powders are composed of agglomerated nanoparticles that have a uniform distribution of all constituting elements. Photoluminescence measurements implied intensification of the up-conversion (UC) emission in the visible part of spectrum with the increase of Yb3+ content, which is followed by a significant change in the green to red ratio. Two-photon UC processes are established as a result of Er3+ f-f electronic transitions: green emission at 523 and 551 nm (2H11/2, 4S3/2 → 4I15/2) as well as a red emission at 661 nm (4F9/2 → 4I15/2). The highest value of absolute quantum yield of 0.055% is determined for SrGd2O4 nanoparticles doped with 0.5 at% of Er3+ and co-doped with 5 at% of Yb3+ (λexc = 976 nm, power density 200 W/cm2).
T2  - Journal of Luminescence
T1  - Quantum yield and energy transfer in up-conversion SrGd2O4:Yb, Er nanoparticles obtained via sol-gel assisted combustion
SP  - 119491
VL  - 253
DO  - 10.1016/j.jlumin.2022.119491
UR  - https://hdl.handle.net/21.15107/rcub_dais_13491
ER  - 

@article{
author = "Stamenković, Tijana and Radmilović, Nadežda and Prekajski Đorđević, Marija D. and Rabasović, Mihailo and Dinić, Ivana and Tomić, Miloš and Lojpur, Vesna and Mančić, Lidija",
year = "2023",
abstract = "Nanopowders of up-conversion SrGd2O4 orthorhombic (Pnma) phase co-doped with different Yb3+ (1, 2.5 and 5 at%) and constant Er3+ (0.5 at%) ions were successfully prepared via sol-gel assisted combustion. Rietveld refinement indicated unit cell lattice parameters increase with Yb3+ and Er3+ ions doping. Scanning transmission electron microscopy with corresponding energy-dispersive X-ray spectroscopy revealed that obtained powders are composed of agglomerated nanoparticles that have a uniform distribution of all constituting elements. Photoluminescence measurements implied intensification of the up-conversion (UC) emission in the visible part of spectrum with the increase of Yb3+ content, which is followed by a significant change in the green to red ratio. Two-photon UC processes are established as a result of Er3+ f-f electronic transitions: green emission at 523 and 551 nm (2H11/2, 4S3/2 → 4I15/2) as well as a red emission at 661 nm (4F9/2 → 4I15/2). The highest value of absolute quantum yield of 0.055% is determined for SrGd2O4 nanoparticles doped with 0.5 at% of Er3+ and co-doped with 5 at% of Yb3+ (λexc = 976 nm, power density 200 W/cm2).",
journal = "Journal of Luminescence",
title = "Quantum yield and energy transfer in up-conversion SrGd2O4:Yb, Er nanoparticles obtained via sol-gel assisted combustion",
pages = "119491",
volume = "253",
doi = "10.1016/j.jlumin.2022.119491",
url = "https://hdl.handle.net/21.15107/rcub_dais_13491"
}

Stamenković, T., Radmilović, N., Prekajski Đorđević, M. D., Rabasović, M., Dinić, I., Tomić, M., Lojpur, V.,& Mančić, L.. (2023). Quantum yield and energy transfer in up-conversion SrGd2O4:Yb, Er nanoparticles obtained via sol-gel assisted combustion. in Journal of Luminescence, 253, 119491.
https://doi.org/10.1016/j.jlumin.2022.119491
https://hdl.handle.net/21.15107/rcub_dais_13491

Stamenković T, Radmilović N, Prekajski Đorđević MD, Rabasović M, Dinić I, Tomić M, Lojpur V, Mančić L. Quantum yield and energy transfer in up-conversion SrGd2O4:Yb, Er nanoparticles obtained via sol-gel assisted combustion. in Journal of Luminescence. 2023;253:119491.
doi:10.1016/j.jlumin.2022.119491
https://hdl.handle.net/21.15107/rcub_dais_13491 .

Stamenković, Tijana, Radmilović, Nadežda, Prekajski Đorđević, Marija D., Rabasović, Mihailo, Dinić, Ivana, Tomić, Miloš, Lojpur, Vesna, Mančić, Lidija, "Quantum yield and energy transfer in up-conversion SrGd2O4:Yb, Er nanoparticles obtained via sol-gel assisted combustion" in Journal of Luminescence, 253 (2023):119491,
https://doi.org/10.1016/j.jlumin.2022.119491 .,
https://hdl.handle.net/21.15107/rcub_dais_13491 .

TY  - JOUR
AU  - Mitrašinović, Aleksandar M.
AU  - Tomić, Miloš
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/11733
AB  - One of the greatest environmental goals for the aluminum alloys industry is generating higher quality products by introducing cleaner input materials while maintaining low production costs. A typical dilemma for the master alloy producers is the cleanness level of the master alloy since insoluble inclusions could serve as inoculants during the solidification process. In this work, commercial Ti5B1 master alloy is used for grain refinement of Al7Si4Cu aluminum alloy and compared with the cleaned master alloy that contained a lower amount of residual refractory oxides and salts. Metallography analysis was used for grain size measurement while Computer Aided Cooling Curve Analysis was used for assessment of the undercooling and heat release values. In all instances, specimens treated with the cleaned master alloy showed smaller grains in the final structure and lower undercooling values. The difference in released heat between liquidus and recalescence temperatures was about 25% in specimens where added 0.66 wt% of cleaned master alloys compared to specimens where the commercial master alloys were added. Using cleaner Ti5B1 master alloy with a higher number of TiAl3 and TiB2 particles improves its grain refinement efficiency and transmits fewer impurities in produced parts. Producing cleaner master alloy would be beneficial from economic and environmental aspects by increasing its value and service time of produced parts besides simplifying the recycling process at the end of parts life-cycle.
PB  - Springer Science and Business Media LLC
T2  - International Journal of Precision Engineering and Manufacturing-Green Technology
T1  - Functional and Environmental Advantage of Cleaning Ti5B1 Master Alloy
VL  - 9
VL  - 9
IS  - 3
IS  - 3
DO  - 10.1007/s40684-021-00339-2
UR  - https://hdl.handle.net/21.15107/rcub_dais_13494
ER  - 

@article{
author = "Mitrašinović, Aleksandar M. and Tomić, Miloš",
year = "2022",
abstract = "One of the greatest environmental goals for the aluminum alloys industry is generating higher quality products by introducing cleaner input materials while maintaining low production costs. A typical dilemma for the master alloy producers is the cleanness level of the master alloy since insoluble inclusions could serve as inoculants during the solidification process. In this work, commercial Ti5B1 master alloy is used for grain refinement of Al7Si4Cu aluminum alloy and compared with the cleaned master alloy that contained a lower amount of residual refractory oxides and salts. Metallography analysis was used for grain size measurement while Computer Aided Cooling Curve Analysis was used for assessment of the undercooling and heat release values. In all instances, specimens treated with the cleaned master alloy showed smaller grains in the final structure and lower undercooling values. The difference in released heat between liquidus and recalescence temperatures was about 25% in specimens where added 0.66 wt% of cleaned master alloys compared to specimens where the commercial master alloys were added. Using cleaner Ti5B1 master alloy with a higher number of TiAl3 and TiB2 particles improves its grain refinement efficiency and transmits fewer impurities in produced parts. Producing cleaner master alloy would be beneficial from economic and environmental aspects by increasing its value and service time of produced parts besides simplifying the recycling process at the end of parts life-cycle.",
publisher = "Springer Science and Business Media LLC",
journal = "International Journal of Precision Engineering and Manufacturing-Green Technology",
title = "Functional and Environmental Advantage of Cleaning Ti5B1 Master Alloy",
volume = "9, 9",
number = "3, 3",
doi = "10.1007/s40684-021-00339-2",
url = "https://hdl.handle.net/21.15107/rcub_dais_13494"
}

Mitrašinović, A. M.,& Tomić, M.. (2022). Functional and Environmental Advantage of Cleaning Ti5B1 Master Alloy. in International Journal of Precision Engineering and Manufacturing-Green Technology
Springer Science and Business Media LLC., 9(3).
https://doi.org/10.1007/s40684-021-00339-2
https://hdl.handle.net/21.15107/rcub_dais_13494

Mitrašinović AM, Tomić M. Functional and Environmental Advantage of Cleaning Ti5B1 Master Alloy. in International Journal of Precision Engineering and Manufacturing-Green Technology. 2022;9(3).
doi:10.1007/s40684-021-00339-2
https://hdl.handle.net/21.15107/rcub_dais_13494 .

Mitrašinović, Aleksandar M., Tomić, Miloš, "Functional and Environmental Advantage of Cleaning Ti5B1 Master Alloy" in International Journal of Precision Engineering and Manufacturing-Green Technology, 9, no. 3 (2022),
https://doi.org/10.1007/s40684-021-00339-2 .,
https://hdl.handle.net/21.15107/rcub_dais_13494 .

TY  - JOUR
AU  - Mitrašinović, Aleksandar M.
AU  - Tomić, Miloš
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13494
AB  - One of the greatest environmental goals for the aluminum alloys industry is generating higher quality products by introducing cleaner input materials while maintaining low production costs. A typical dilemma for the master alloy producers is the cleanness level of the master alloy since insoluble inclusions could serve as inoculants during the solidification process. In this work, commercial Ti5B1 master alloy is used for grain refinement of Al7Si4Cu aluminum alloy and compared with the cleaned master alloy that contained a lower amount of residual refractory oxides and salts. Metallography analysis was used for grain size measurement while Computer Aided Cooling Curve Analysis was used for assessment of the undercooling and heat release values. In all instances, specimens treated with the cleaned master alloy showed smaller grains in the final structure and lower undercooling values. The difference in released heat between liquidus and recalescence temperatures was about 25% in specimens where added 0.66 wt% of cleaned master alloys compared to specimens where the commercial master alloys were added. Using cleaner Ti5B1 master alloy with a higher number of TiAl3 and TiB2 particles improves its grain refinement efficiency and transmits fewer impurities in produced parts. Producing cleaner master alloy would be beneficial from economic and environmental aspects by increasing its value and service time of produced parts besides simplifying the recycling process at the end of parts life-cycle.
PB  - Springer Science and Business Media LLC
T2  - International Journal of Precision Engineering and Manufacturing-Green Technology
T1  - Functional and Environmental Advantage of Cleaning Ti5B1 Master Alloy
VL  - 9
VL  - 9
IS  - 3
IS  - 3
DO  - 10.1007/s40684-021-00339-2
UR  - https://hdl.handle.net/21.15107/rcub_dais_11733
ER  - 

@article{
author = "Mitrašinović, Aleksandar M. and Tomić, Miloš",
year = "2022",
abstract = "One of the greatest environmental goals for the aluminum alloys industry is generating higher quality products by introducing cleaner input materials while maintaining low production costs. A typical dilemma for the master alloy producers is the cleanness level of the master alloy since insoluble inclusions could serve as inoculants during the solidification process. In this work, commercial Ti5B1 master alloy is used for grain refinement of Al7Si4Cu aluminum alloy and compared with the cleaned master alloy that contained a lower amount of residual refractory oxides and salts. Metallography analysis was used for grain size measurement while Computer Aided Cooling Curve Analysis was used for assessment of the undercooling and heat release values. In all instances, specimens treated with the cleaned master alloy showed smaller grains in the final structure and lower undercooling values. The difference in released heat between liquidus and recalescence temperatures was about 25% in specimens where added 0.66 wt% of cleaned master alloys compared to specimens where the commercial master alloys were added. Using cleaner Ti5B1 master alloy with a higher number of TiAl3 and TiB2 particles improves its grain refinement efficiency and transmits fewer impurities in produced parts. Producing cleaner master alloy would be beneficial from economic and environmental aspects by increasing its value and service time of produced parts besides simplifying the recycling process at the end of parts life-cycle.",
publisher = "Springer Science and Business Media LLC",
journal = "International Journal of Precision Engineering and Manufacturing-Green Technology",
title = "Functional and Environmental Advantage of Cleaning Ti5B1 Master Alloy",
volume = "9, 9",
number = "3, 3",
doi = "10.1007/s40684-021-00339-2",
url = "https://hdl.handle.net/21.15107/rcub_dais_11733"
}

Mitrašinović, A. M.,& Tomić, M.. (2022). Functional and Environmental Advantage of Cleaning Ti5B1 Master Alloy. in International Journal of Precision Engineering and Manufacturing-Green Technology
Springer Science and Business Media LLC., 9(3).
https://doi.org/10.1007/s40684-021-00339-2
https://hdl.handle.net/21.15107/rcub_dais_11733

Mitrašinović AM, Tomić M. Functional and Environmental Advantage of Cleaning Ti5B1 Master Alloy. in International Journal of Precision Engineering and Manufacturing-Green Technology. 2022;9(3).
doi:10.1007/s40684-021-00339-2
https://hdl.handle.net/21.15107/rcub_dais_11733 .

Mitrašinović, Aleksandar M., Tomić, Miloš, "Functional and Environmental Advantage of Cleaning Ti5B1 Master Alloy" in International Journal of Precision Engineering and Manufacturing-Green Technology, 9, no. 3 (2022),
https://doi.org/10.1007/s40684-021-00339-2 .,
https://hdl.handle.net/21.15107/rcub_dais_11733 .

TY  - JOUR
AU  - Đinović, Zoran
AU  - Tomić, Miloš
AU  - Kocsis, Agnes
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13157
AB  - We present a combination of micromachined optofluidic platforms equipped with a fiber-optic sensing configuration based on a three-path Mach–Zehnder interferometer (MZI) for simultaneous measurement of the refractive index of liquids and the autocalibration in dynamic regime. The sensing principle is based on the low-coherence interferometry, characterized by a generation of Gaussian enveloped interferograms, for which the position of its maximum depends on the optical path difference (OPD) between the sensing and reference arm of the MZI. When liquid flows through the central microchannel of the optofluidic platform it crosses the light beam between the two optical fibers in the sensing arm causing the OPD change. An algorithm has been applied for the calculation of the refractive index of liquids out of the raw interference signals. We obtained a very good agreement between the experimental results and literature data of refractive indices of subjected fluids. The accuracy of refractive index measurement is approximately 1%, predominantly determined by the accuracy of reading the position of the mechanical scanner. The proposed sensor is attractive for the label-free biological, biochemical, and chemical sensing owing autocalibration and high sensitivity yet consuming a very small sample volume of 1 µL. It is capable to measure the refractive index of various liquids and/or gases simultaneously in the process.
PB  - MDPI AG
T2  - Chemosensors
T1  - Optofluidic Micromachined Platform for Refractive Index Measurement
SP  - 197
VL  - 10
IS  - 5
DO  - 10.3390/chemosensors10050197
UR  - https://hdl.handle.net/21.15107/rcub_dais_13157
ER  - 

@article{
author = "Đinović, Zoran and Tomić, Miloš and Kocsis, Agnes",
year = "2022",
abstract = "We present a combination of micromachined optofluidic platforms equipped with a fiber-optic sensing configuration based on a three-path Mach–Zehnder interferometer (MZI) for simultaneous measurement of the refractive index of liquids and the autocalibration in dynamic regime. The sensing principle is based on the low-coherence interferometry, characterized by a generation of Gaussian enveloped interferograms, for which the position of its maximum depends on the optical path difference (OPD) between the sensing and reference arm of the MZI. When liquid flows through the central microchannel of the optofluidic platform it crosses the light beam between the two optical fibers in the sensing arm causing the OPD change. An algorithm has been applied for the calculation of the refractive index of liquids out of the raw interference signals. We obtained a very good agreement between the experimental results and literature data of refractive indices of subjected fluids. The accuracy of refractive index measurement is approximately 1%, predominantly determined by the accuracy of reading the position of the mechanical scanner. The proposed sensor is attractive for the label-free biological, biochemical, and chemical sensing owing autocalibration and high sensitivity yet consuming a very small sample volume of 1 µL. It is capable to measure the refractive index of various liquids and/or gases simultaneously in the process.",
publisher = "MDPI AG",
journal = "Chemosensors",
title = "Optofluidic Micromachined Platform for Refractive Index Measurement",
pages = "197",
volume = "10",
number = "5",
doi = "10.3390/chemosensors10050197",
url = "https://hdl.handle.net/21.15107/rcub_dais_13157"
}

Đinović, Z., Tomić, M.,& Kocsis, A.. (2022). Optofluidic Micromachined Platform for Refractive Index Measurement. in Chemosensors
MDPI AG., 10(5), 197.
https://doi.org/10.3390/chemosensors10050197
https://hdl.handle.net/21.15107/rcub_dais_13157

Đinović Z, Tomić M, Kocsis A. Optofluidic Micromachined Platform for Refractive Index Measurement. in Chemosensors. 2022;10(5):197.
doi:10.3390/chemosensors10050197
https://hdl.handle.net/21.15107/rcub_dais_13157 .

Đinović, Zoran, Tomić, Miloš, Kocsis, Agnes, "Optofluidic Micromachined Platform for Refractive Index Measurement" in Chemosensors, 10, no. 5 (2022):197,
https://doi.org/10.3390/chemosensors10050197 .,
https://hdl.handle.net/21.15107/rcub_dais_13157 .

TY  - DATA
AU  - Đinović, Zoran
AU  - Pavelka, Robert
AU  - Tomić, Miloš
AU  - Sprinzl, Georg
AU  - Müller, Julia Gertrud
AU  - Traxler, Hannes
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/12260
AB  - In the supplement, a few audio records in a time duration of about 1-3 min, which are acquired during experiments performed on skull head #7587, are given. The signals have been on-line processed by TIFOS system and recorded by an HP notebook audiocard without any frequency equalizing. The sound pressure level was measured by Bruel & Kjaer 2250 sound meter (dBA, slow). The sound of piano and violin in Schubert’s Rondo in Fig. S1a are of high fidelity. High frequency tones in the aria from “La-Traviata” performed by famous Russian-Austrian operatic soprano Anna Netrebko (Fig. S1d) are also very clear and dynamic. The famous speech of Martin Luther King (Fig. S1b) is completely intelligible, as well as the resignation speech of former British prime minister Theresa May (Fig. S1c). The individual characteristics of the well-known voices are easily recognizable.
PB  - Elsevier BV
T2  - Hearing Research
T1  - Supplementary information for the article: Djinović, Z., Pavelka, R., Tomić, M., Sprinzl, G., Müller, J. G., & Traxler, H. (2021). Experimental study of an implantable fiber-optic microphone on human cadavers. Hearing Research, 410, 108351. https://doi.org/10.1016/j.heares.2021.108351
VL  - 410
UR  - https://hdl.handle.net/21.15107/rcub_dais_12260
ER  - 

@misc{
author = "Đinović, Zoran and Pavelka, Robert and Tomić, Miloš and Sprinzl, Georg and Müller, Julia Gertrud and Traxler, Hannes",
year = "2021",
abstract = "In the supplement, a few audio records in a time duration of about 1-3 min, which are acquired during experiments performed on skull head #7587, are given. The signals have been on-line processed by TIFOS system and recorded by an HP notebook audiocard without any frequency equalizing. The sound pressure level was measured by Bruel & Kjaer 2250 sound meter (dBA, slow). The sound of piano and violin in Schubert’s Rondo in Fig. S1a are of high fidelity. High frequency tones in the aria from “La-Traviata” performed by famous Russian-Austrian operatic soprano Anna Netrebko (Fig. S1d) are also very clear and dynamic. The famous speech of Martin Luther King (Fig. S1b) is completely intelligible, as well as the resignation speech of former British prime minister Theresa May (Fig. S1c). The individual characteristics of the well-known voices are easily recognizable.",
publisher = "Elsevier BV",
journal = "Hearing Research",
title = "Supplementary information for the article: Djinović, Z., Pavelka, R., Tomić, M., Sprinzl, G., Müller, J. G., & Traxler, H. (2021). Experimental study of an implantable fiber-optic microphone on human cadavers. Hearing Research, 410, 108351. https://doi.org/10.1016/j.heares.2021.108351",
volume = "410",
url = "https://hdl.handle.net/21.15107/rcub_dais_12260"
}

Đinović, Z., Pavelka, R., Tomić, M., Sprinzl, G., Müller, J. G.,& Traxler, H.. (2021). Supplementary information for the article: Djinović, Z., Pavelka, R., Tomić, M., Sprinzl, G., Müller, J. G., & Traxler, H. (2021). Experimental study of an implantable fiber-optic microphone on human cadavers. Hearing Research, 410, 108351. https://doi.org/10.1016/j.heares.2021.108351. in Hearing Research
Elsevier BV., 410.
https://hdl.handle.net/21.15107/rcub_dais_12260

Đinović Z, Pavelka R, Tomić M, Sprinzl G, Müller JG, Traxler H. Supplementary information for the article: Djinović, Z., Pavelka, R., Tomić, M., Sprinzl, G., Müller, J. G., & Traxler, H. (2021). Experimental study of an implantable fiber-optic microphone on human cadavers. Hearing Research, 410, 108351. https://doi.org/10.1016/j.heares.2021.108351. in Hearing Research. 2021;410.
https://hdl.handle.net/21.15107/rcub_dais_12260 .

Đinović, Zoran, Pavelka, Robert, Tomić, Miloš, Sprinzl, Georg, Müller, Julia Gertrud, Traxler, Hannes, "Supplementary information for the article: Djinović, Z., Pavelka, R., Tomić, M., Sprinzl, G., Müller, J. G., & Traxler, H. (2021). Experimental study of an implantable fiber-optic microphone on human cadavers. Hearing Research, 410, 108351. https://doi.org/10.1016/j.heares.2021.108351" in Hearing Research, 410 (2021),
https://hdl.handle.net/21.15107/rcub_dais_12260 .

TY  - CONF
AU  - Đinović, Zoran
AU  - Tomić, Miloš
AU  - Plank, N.
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/12314
AB  - Many retina diseases require very often a delicate surgical intervention, which is performed by different minimally invasive instruments and tools. They must be miniature but still robust and capable to accurately determine the separation to the retina target in real-time. Because of that they have to be instrumented with a sensing technique, which may interactively read the actual distance toward the target without any risk of injuring the retina. In this paper, we present a fiber-optic sensing technique suitable for integration into surgical instruments. The technique is composed of low- and high-coherence interferometry that allows sub-micrometer absolute distance measurement between the surgical tools and retina without any scanning unit in the reference arm. The technique is demonstrated utilizing the experimental setup based on a 2x2 fiber-optic coupler simultaneously powered by an SLD and VCSEL as low- and high-coherence light sources, respectively. The sensing arm was directed toward the eye model, made of the inner silicon layer and outer polylactide (PLA) 3D printed eyeball. The distance between the sensing fiber tip and target has been measured using both low-and high-coherence interferograms over a rather large dynamic range of about 2 mm with the accuracy of 655 nm that corresponds with λ/2 of the high-coherence light source.
PB  - Rijeka : Croatian Society for Information, Communication and Electronic Technology – MIPRO
C3  - 44th International Convention on Information, Communication and Electronic Technology, MIPRO 2021, Sep.27. – Oct. 1., 2021, Opatija, Croatia : Proceedings
T1  - A Fiber-optic Sensing Technique for Sub-micrometer Distance Measurement between the Surgical Tools and Retina
SP  - 2051
EP  - 2056
UR  - https://hdl.handle.net/21.15107/rcub_dais_12314
ER  - 

@conference{
author = "Đinović, Zoran and Tomić, Miloš and Plank, N.",
year = "2021",
abstract = "Many retina diseases require very often a delicate surgical intervention, which is performed by different minimally invasive instruments and tools. They must be miniature but still robust and capable to accurately determine the separation to the retina target in real-time. Because of that they have to be instrumented with a sensing technique, which may interactively read the actual distance toward the target without any risk of injuring the retina. In this paper, we present a fiber-optic sensing technique suitable for integration into surgical instruments. The technique is composed of low- and high-coherence interferometry that allows sub-micrometer absolute distance measurement between the surgical tools and retina without any scanning unit in the reference arm. The technique is demonstrated utilizing the experimental setup based on a 2x2 fiber-optic coupler simultaneously powered by an SLD and VCSEL as low- and high-coherence light sources, respectively. The sensing arm was directed toward the eye model, made of the inner silicon layer and outer polylactide (PLA) 3D printed eyeball. The distance between the sensing fiber tip and target has been measured using both low-and high-coherence interferograms over a rather large dynamic range of about 2 mm with the accuracy of 655 nm that corresponds with λ/2 of the high-coherence light source.",
publisher = "Rijeka : Croatian Society for Information, Communication and Electronic Technology – MIPRO",
journal = "44th International Convention on Information, Communication and Electronic Technology, MIPRO 2021, Sep.27. – Oct. 1., 2021, Opatija, Croatia : Proceedings",
title = "A Fiber-optic Sensing Technique for Sub-micrometer Distance Measurement between the Surgical Tools and Retina",
pages = "2051-2056",
url = "https://hdl.handle.net/21.15107/rcub_dais_12314"
}

Đinović, Z., Tomić, M.,& Plank, N.. (2021). A Fiber-optic Sensing Technique for Sub-micrometer Distance Measurement between the Surgical Tools and Retina. in 44th International Convention on Information, Communication and Electronic Technology, MIPRO 2021, Sep.27. – Oct. 1., 2021, Opatija, Croatia : Proceedings
Rijeka : Croatian Society for Information, Communication and Electronic Technology – MIPRO., 2051-2056.
https://hdl.handle.net/21.15107/rcub_dais_12314

Đinović Z, Tomić M, Plank N. A Fiber-optic Sensing Technique for Sub-micrometer Distance Measurement between the Surgical Tools and Retina. in 44th International Convention on Information, Communication and Electronic Technology, MIPRO 2021, Sep.27. – Oct. 1., 2021, Opatija, Croatia : Proceedings. 2021;:2051-2056.
https://hdl.handle.net/21.15107/rcub_dais_12314 .

Đinović, Zoran, Tomić, Miloš, Plank, N., "A Fiber-optic Sensing Technique for Sub-micrometer Distance Measurement between the Surgical Tools and Retina" in 44th International Convention on Information, Communication and Electronic Technology, MIPRO 2021, Sep.27. – Oct. 1., 2021, Opatija, Croatia : Proceedings (2021):2051-2056,
https://hdl.handle.net/21.15107/rcub_dais_12314 .

TY  - CONF
AU  - Đinović, Zoran
AU  - Kocsis, A.
AU  - Tomić, Miloš
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/12312
AB  - We present a fiber-optic sensing configuration based on Mach-Zehnder interferometer (MZI) embedded into the MEMS optofluidic platform for measurement of index of refraction of liquids in dynamic regime. The sensing principle is based on the low-coherence interferometry, characterized by generation of Gaussian shape interferograms, which maximum position depends on the optical path difference (OPD) between the sensing and reference arm of the MZI. When liquid flows through the central microchannel of the optofluidic platform it crosses the light beam between the two optical fibers in the sensing arm causing the OPD change. An algorithm has been applied for calculation of index of refraction of liquids out of the raw interference signals. We obtained very good agreement between the experimental results and literature data of index of refraction of subjected fluids. The accuracy of index of refraction measurement is about 1 % that is predominantly determined by accuracy of reading the position of mechanical scanner.
PB  - IFSA Publishing
C3  - Sensors and Electronic Instrumentation Advances: Proceedings of the 7th International Conference on Sensors and Electronic Instrumentation Advances 22-24 September 2021 Palma de Mallorca, Mallorca (Balearic Islands), Spain
T1  - Fiber-optic Mach-Zehnder Interferometer for Refractive Index Measurement Based on MEMS Optofluidic Platform
SP  - 64
EP  - 68
UR  - https://hdl.handle.net/21.15107/rcub_dais_12312
ER  - 

@conference{
author = "Đinović, Zoran and Kocsis, A. and Tomić, Miloš",
year = "2021",
abstract = "We present a fiber-optic sensing configuration based on Mach-Zehnder interferometer (MZI) embedded into the MEMS optofluidic platform for measurement of index of refraction of liquids in dynamic regime. The sensing principle is based on the low-coherence interferometry, characterized by generation of Gaussian shape interferograms, which maximum position depends on the optical path difference (OPD) between the sensing and reference arm of the MZI. When liquid flows through the central microchannel of the optofluidic platform it crosses the light beam between the two optical fibers in the sensing arm causing the OPD change. An algorithm has been applied for calculation of index of refraction of liquids out of the raw interference signals. We obtained very good agreement between the experimental results and literature data of index of refraction of subjected fluids. The accuracy of index of refraction measurement is about 1 % that is predominantly determined by accuracy of reading the position of mechanical scanner.",
publisher = "IFSA Publishing",
journal = "Sensors and Electronic Instrumentation Advances: Proceedings of the 7th International Conference on Sensors and Electronic Instrumentation Advances 22-24 September 2021 Palma de Mallorca, Mallorca (Balearic Islands), Spain",
title = "Fiber-optic Mach-Zehnder Interferometer for Refractive Index Measurement Based on MEMS Optofluidic Platform",
pages = "64-68",
url = "https://hdl.handle.net/21.15107/rcub_dais_12312"
}

Đinović, Z., Kocsis, A.,& Tomić, M.. (2021). Fiber-optic Mach-Zehnder Interferometer for Refractive Index Measurement Based on MEMS Optofluidic Platform. in Sensors and Electronic Instrumentation Advances: Proceedings of the 7th International Conference on Sensors and Electronic Instrumentation Advances 22-24 September 2021 Palma de Mallorca, Mallorca (Balearic Islands), Spain
IFSA Publishing., 64-68.
https://hdl.handle.net/21.15107/rcub_dais_12312

Đinović Z, Kocsis A, Tomić M. Fiber-optic Mach-Zehnder Interferometer for Refractive Index Measurement Based on MEMS Optofluidic Platform. in Sensors and Electronic Instrumentation Advances: Proceedings of the 7th International Conference on Sensors and Electronic Instrumentation Advances 22-24 September 2021 Palma de Mallorca, Mallorca (Balearic Islands), Spain. 2021;:64-68.
https://hdl.handle.net/21.15107/rcub_dais_12312 .

Đinović, Zoran, Kocsis, A., Tomić, Miloš, "Fiber-optic Mach-Zehnder Interferometer for Refractive Index Measurement Based on MEMS Optofluidic Platform" in Sensors and Electronic Instrumentation Advances: Proceedings of the 7th International Conference on Sensors and Electronic Instrumentation Advances 22-24 September 2021 Palma de Mallorca, Mallorca (Balearic Islands), Spain (2021):64-68,
https://hdl.handle.net/21.15107/rcub_dais_12312 .

TY  - JOUR
AU  - Đinović, Zoran
AU  - Pavelka, Robert
AU  - Tomić, Miloš
AU  - Sprinzl, Georg
AU  - Müller, Julia Gertrud
AU  - Traxler, Hannes
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/12259
AB  - In this paper, we present the results of an experimental study about a novel fiber optical vibrometer, aimed to be used as a totally implantable fiber-optic microphone for hearing aids. The sensor head, implanted inside the human cadaver middle ear, detects the amplitude of the incus vibrations, which are produced by an external acoustical source. The probe beam of coherent vertical cavity surface emitting laser (VCSEL) radiation is directed to the incus and the phase-modulated reflected beam is captured and demodulated. The problem of interferometric fading was solved using two quasi-quadrature signals, passively produced by the 3 × 3 single-mode fiber-optic coupler, processed by a special embedded algorithm. The implanted optoelectronic module works with very low-power consumption, performs real-time signal processing and outputs an analogue signal proportional to the incus vibration. The amplitude of the incus vibrations at different sound pressure levels (SPL) from 40 to 90 dB and at frequencies from 100 Hz to 10 kHz were measured by the implanted system. The system was evaluated on five cadaver skulls. The measured amplitudes were in the range of 1 pm to 5 nm, depending on the subjected skull and the applied sound pressure.
PB  - Elsevier BV
T2  - Hearing Research
T1  - Experimental study of an implantable fiber-optic microphone on human cadavers
SP  - 108351
SP  - 108351
VL  - 410
DO  - 10.1016/j.heares.2021.108351
UR  - https://hdl.handle.net/21.15107/rcub_dais_12259
ER  - 

@article{
author = "Đinović, Zoran and Pavelka, Robert and Tomić, Miloš and Sprinzl, Georg and Müller, Julia Gertrud and Traxler, Hannes",
year = "2021",
abstract = "In this paper, we present the results of an experimental study about a novel fiber optical vibrometer, aimed to be used as a totally implantable fiber-optic microphone for hearing aids. The sensor head, implanted inside the human cadaver middle ear, detects the amplitude of the incus vibrations, which are produced by an external acoustical source. The probe beam of coherent vertical cavity surface emitting laser (VCSEL) radiation is directed to the incus and the phase-modulated reflected beam is captured and demodulated. The problem of interferometric fading was solved using two quasi-quadrature signals, passively produced by the 3 × 3 single-mode fiber-optic coupler, processed by a special embedded algorithm. The implanted optoelectronic module works with very low-power consumption, performs real-time signal processing and outputs an analogue signal proportional to the incus vibration. The amplitude of the incus vibrations at different sound pressure levels (SPL) from 40 to 90 dB and at frequencies from 100 Hz to 10 kHz were measured by the implanted system. The system was evaluated on five cadaver skulls. The measured amplitudes were in the range of 1 pm to 5 nm, depending on the subjected skull and the applied sound pressure.",
publisher = "Elsevier BV",
journal = "Hearing Research",
title = "Experimental study of an implantable fiber-optic microphone on human cadavers",
pages = "108351-108351",
volume = "410",
doi = "10.1016/j.heares.2021.108351",
url = "https://hdl.handle.net/21.15107/rcub_dais_12259"
}

Đinović, Z., Pavelka, R., Tomić, M., Sprinzl, G., Müller, J. G.,& Traxler, H.. (2021). Experimental study of an implantable fiber-optic microphone on human cadavers. in Hearing Research
Elsevier BV., 410, 108351.
https://doi.org/10.1016/j.heares.2021.108351
https://hdl.handle.net/21.15107/rcub_dais_12259

Đinović Z, Pavelka R, Tomić M, Sprinzl G, Müller JG, Traxler H. Experimental study of an implantable fiber-optic microphone on human cadavers. in Hearing Research. 2021;410:108351.
doi:10.1016/j.heares.2021.108351
https://hdl.handle.net/21.15107/rcub_dais_12259 .

Đinović, Zoran, Pavelka, Robert, Tomić, Miloš, Sprinzl, Georg, Müller, Julia Gertrud, Traxler, Hannes, "Experimental study of an implantable fiber-optic microphone on human cadavers" in Hearing Research, 410 (2021):108351,
https://doi.org/10.1016/j.heares.2021.108351 .,
https://hdl.handle.net/21.15107/rcub_dais_12259 .

TY  - JOUR
AU  - Đinović, Zoran
AU  - Pavelka, Robert
AU  - Tomić, Miloš
AU  - Sprinzl, Georg
AU  - Müller, Julia Gertrud
AU  - Traxler, Hannes
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/12143
AB  - In this paper, we present the results of an experimental study about a novel fiber optical vibrometer, aimed to be used as a totally implantable fiber-optic microphone for hearing aids. The sensor head, implanted inside the human cadaver middle ear, detects the amplitude of the incus vibrations, which are produced by an external acoustical source. The probe beam of coherent vertical cavity surface emitting laser (VCSEL) radiation is directed to the incus and the phase-modulated reflected beam is captured and demodulated. The problem of interferometric fading was solved using two quasi-quadrature signals, passively produced by the 3 × 3 single-mode fiber-optic coupler, processed by a special embedded algorithm. The implanted optoelectronic module works with very low-power consumption, performs real-time signal processing and outputs an analogue signal proportional to the incus vibration. The amplitude of the incus vibrations at different sound pressure levels (SPL) from 40 to 90 dB and at frequencies from 100 Hz to 10 kHz were measured by the implanted system. The system was evaluated on five cadaver skulls. The measured amplitudes were in the range of 1 pm to 5 nm, depending on the subjected skull and the applied sound pressure.
PB  - Elsevier BV
T2  - Hearing Research
T1  - Experimental study of an implantable fiber-optic microphone on human cadavers
SP  - 108351
VL  - 410
DO  - 10.1016/j.heares.2021.108351
UR  - https://hdl.handle.net/21.15107/rcub_dais_12143
ER  - 

@article{
author = "Đinović, Zoran and Pavelka, Robert and Tomić, Miloš and Sprinzl, Georg and Müller, Julia Gertrud and Traxler, Hannes",
year = "2021",
abstract = "In this paper, we present the results of an experimental study about a novel fiber optical vibrometer, aimed to be used as a totally implantable fiber-optic microphone for hearing aids. The sensor head, implanted inside the human cadaver middle ear, detects the amplitude of the incus vibrations, which are produced by an external acoustical source. The probe beam of coherent vertical cavity surface emitting laser (VCSEL) radiation is directed to the incus and the phase-modulated reflected beam is captured and demodulated. The problem of interferometric fading was solved using two quasi-quadrature signals, passively produced by the 3 × 3 single-mode fiber-optic coupler, processed by a special embedded algorithm. The implanted optoelectronic module works with very low-power consumption, performs real-time signal processing and outputs an analogue signal proportional to the incus vibration. The amplitude of the incus vibrations at different sound pressure levels (SPL) from 40 to 90 dB and at frequencies from 100 Hz to 10 kHz were measured by the implanted system. The system was evaluated on five cadaver skulls. The measured amplitudes were in the range of 1 pm to 5 nm, depending on the subjected skull and the applied sound pressure.",
publisher = "Elsevier BV",
journal = "Hearing Research",
title = "Experimental study of an implantable fiber-optic microphone on human cadavers",
pages = "108351",
volume = "410",
doi = "10.1016/j.heares.2021.108351",
url = "https://hdl.handle.net/21.15107/rcub_dais_12143"
}

Đinović, Z., Pavelka, R., Tomić, M., Sprinzl, G., Müller, J. G.,& Traxler, H.. (2021). Experimental study of an implantable fiber-optic microphone on human cadavers. in Hearing Research
Elsevier BV., 410, 108351.
https://doi.org/10.1016/j.heares.2021.108351
https://hdl.handle.net/21.15107/rcub_dais_12143

Đinović Z, Pavelka R, Tomić M, Sprinzl G, Müller JG, Traxler H. Experimental study of an implantable fiber-optic microphone on human cadavers. in Hearing Research. 2021;410:108351.
doi:10.1016/j.heares.2021.108351
https://hdl.handle.net/21.15107/rcub_dais_12143 .

Đinović, Zoran, Pavelka, Robert, Tomić, Miloš, Sprinzl, Georg, Müller, Julia Gertrud, Traxler, Hannes, "Experimental study of an implantable fiber-optic microphone on human cadavers" in Hearing Research, 410 (2021):108351,
https://doi.org/10.1016/j.heares.2021.108351 .,
https://hdl.handle.net/21.15107/rcub_dais_12143 .

TY  - CONF
AU  - Đinović, Zoran
AU  - Tomić, Miloš
AU  - Pavelka, R.
AU  - Sprinzl, G.
AU  - Traxler, H.
PY  - 2020
UR  - https://dais.sanu.ac.rs/123456789/9985
AB  - In this paper we present the results obtained by contactless measurement of vibration of the incus inside the middle ear of a human cadaver, exposed to an external calibrated sound source. The measurement configuration was a Michelson fiber-optic interferometer based on a 3x3 fiber optic coupler, with a VCSEL source. The interferometric signal fading was solved using two quasiquadrature signals and specialized signal processing. The ossicle reflection was augmented by a very light piece of retroreflective material attached to the bone. We measured the amplitude of vibration at different sound pressure levels, independently monitored by a decibel meter placed in the proximity of the cadaver ear. The accuracy of the measurement technique was proved by using a calibrated piezo transducer exposed to vibrate with amplitude of 7nm at 1kHz. We performed the experiments on 8 cadavers in total. The measured amplitudes were found to be in the range between 1 pm and 1 nm, under the sound excitation of 40-90 dB SPL @ 1kHz, respectively.
PB  - Rijeka : Croatian Society for Information, Communication and Electronic Technology - MIPRO
C3  - Proceedings / MIPRO 2020 : 43rd International Convention, September 28, 2020 - October 2, 2020, Opatija, Croatia
T1  - Measurement of the human cadaver ossicle vibration amplitude by fiber-optic interferometry
SP  - 2232
EP  - 2236
UR  - https://hdl.handle.net/21.15107/rcub_dais_9985
ER  - 

@conference{
author = "Đinović, Zoran and Tomić, Miloš and Pavelka, R. and Sprinzl, G. and Traxler, H.",
year = "2020",
abstract = "In this paper we present the results obtained by contactless measurement of vibration of the incus inside the middle ear of a human cadaver, exposed to an external calibrated sound source. The measurement configuration was a Michelson fiber-optic interferometer based on a 3x3 fiber optic coupler, with a VCSEL source. The interferometric signal fading was solved using two quasiquadrature signals and specialized signal processing. The ossicle reflection was augmented by a very light piece of retroreflective material attached to the bone. We measured the amplitude of vibration at different sound pressure levels, independently monitored by a decibel meter placed in the proximity of the cadaver ear. The accuracy of the measurement technique was proved by using a calibrated piezo transducer exposed to vibrate with amplitude of 7nm at 1kHz. We performed the experiments on 8 cadavers in total. The measured amplitudes were found to be in the range between 1 pm and 1 nm, under the sound excitation of 40-90 dB SPL @ 1kHz, respectively.",
publisher = "Rijeka : Croatian Society for Information, Communication and Electronic Technology - MIPRO",
journal = "Proceedings / MIPRO 2020 : 43rd International Convention, September 28, 2020 - October 2, 2020, Opatija, Croatia",
title = "Measurement of the human cadaver ossicle vibration amplitude by fiber-optic interferometry",
pages = "2232-2236",
url = "https://hdl.handle.net/21.15107/rcub_dais_9985"
}

Đinović, Z., Tomić, M., Pavelka, R., Sprinzl, G.,& Traxler, H.. (2020). Measurement of the human cadaver ossicle vibration amplitude by fiber-optic interferometry. in Proceedings / MIPRO 2020 : 43rd International Convention, September 28, 2020 - October 2, 2020, Opatija, Croatia
Rijeka : Croatian Society for Information, Communication and Electronic Technology - MIPRO., 2232-2236.
https://hdl.handle.net/21.15107/rcub_dais_9985

Đinović Z, Tomić M, Pavelka R, Sprinzl G, Traxler H. Measurement of the human cadaver ossicle vibration amplitude by fiber-optic interferometry. in Proceedings / MIPRO 2020 : 43rd International Convention, September 28, 2020 - October 2, 2020, Opatija, Croatia. 2020;:2232-2236.
https://hdl.handle.net/21.15107/rcub_dais_9985 .

Đinović, Zoran, Tomić, Miloš, Pavelka, R., Sprinzl, G., Traxler, H., "Measurement of the human cadaver ossicle vibration amplitude by fiber-optic interferometry" in Proceedings / MIPRO 2020 : 43rd International Convention, September 28, 2020 - October 2, 2020, Opatija, Croatia (2020):2232-2236,
https://hdl.handle.net/21.15107/rcub_dais_9985 .