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  - 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 .

TY  - CONF
AU  - Jović, Vesna
AU  - Đinović, Zoran
AU  - Radovanović, Filip
AU  - Starčević, Marko
AU  - Lamovec, Jelena
AU  - Smiljanić, Milče
AU  - Lazić, Žarko
PY  - 2014
UR  - https://dais.sanu.ac.rs/123456789/785
AB  - In this paper we proposed microfabrication scheme for PDMS (Polydimethylsiloxane) thin membrane fabrication on Si micromachined cavities with square cross section. PDMS network samples for this research were synthesized with the same composition, which are Sylgard 184 (Dow Corning, USA) silicone elastomer base and silicone elastomer curing agent, volume ratio 10:1. Mechanical testing of PDMS elastic properties and bond strength between membranes and oxidized Si wafers, were investigated applying pressurized bulge testing In this paper experimentally determined dependence of the PDMS membrane deflection on pressure load for different membrane thicknesses and sizes of square cavities in Si wafers are given. Also, the influence of different types of Si wafer structuring by anisotropic wet chemical etching on membrane bonding strength were considered.
PB  - Belgrade : Military Technical Institute
C3  - 6th International Scientific Conference on Defensive Technologies, OTEH 2014, Belgrade, 09-10 October 2014: Proceedings
T1  - Characterization of PDMS membranes fabricated by bulkmicromachining on silicon wafers
SP  - 674
EP  - 679
UR  - https://hdl.handle.net/21.15107/rcub_dais_785
ER  - 

@conference{
author = "Jović, Vesna and Đinović, Zoran and Radovanović, Filip and Starčević, Marko and Lamovec, Jelena and Smiljanić, Milče and Lazić, Žarko",
year = "2014",
abstract = "In this paper we proposed microfabrication scheme for PDMS (Polydimethylsiloxane) thin membrane fabrication on Si micromachined cavities with square cross section. PDMS network samples for this research were synthesized with the same composition, which are Sylgard 184 (Dow Corning, USA) silicone elastomer base and silicone elastomer curing agent, volume ratio 10:1. Mechanical testing of PDMS elastic properties and bond strength between membranes and oxidized Si wafers, were investigated applying pressurized bulge testing In this paper experimentally determined dependence of the PDMS membrane deflection on pressure load for different membrane thicknesses and sizes of square cavities in Si wafers are given. Also, the influence of different types of Si wafer structuring by anisotropic wet chemical etching on membrane bonding strength were considered.",
publisher = "Belgrade : Military Technical Institute",
journal = "6th International Scientific Conference on Defensive Technologies, OTEH 2014, Belgrade, 09-10 October 2014: Proceedings",
title = "Characterization of PDMS membranes fabricated by bulkmicromachining on silicon wafers",
pages = "674-679",
url = "https://hdl.handle.net/21.15107/rcub_dais_785"
}

Jović, V., Đinović, Z., Radovanović, F., Starčević, M., Lamovec, J., Smiljanić, M.,& Lazić, Ž.. (2014). Characterization of PDMS membranes fabricated by bulkmicromachining on silicon wafers. in 6th International Scientific Conference on Defensive Technologies, OTEH 2014, Belgrade, 09-10 October 2014: Proceedings
Belgrade : Military Technical Institute., 674-679.
https://hdl.handle.net/21.15107/rcub_dais_785

Jović V, Đinović Z, Radovanović F, Starčević M, Lamovec J, Smiljanić M, Lazić Ž. Characterization of PDMS membranes fabricated by bulkmicromachining on silicon wafers. in 6th International Scientific Conference on Defensive Technologies, OTEH 2014, Belgrade, 09-10 October 2014: Proceedings. 2014;:674-679.
https://hdl.handle.net/21.15107/rcub_dais_785 .

Jović, Vesna, Đinović, Zoran, Radovanović, Filip, Starčević, Marko, Lamovec, Jelena, Smiljanić, Milče, Lazić, Žarko, "Characterization of PDMS membranes fabricated by bulkmicromachining on silicon wafers" in 6th International Scientific Conference on Defensive Technologies, OTEH 2014, Belgrade, 09-10 October 2014: Proceedings (2014):674-679,
https://hdl.handle.net/21.15107/rcub_dais_785 .