TY  - CONF
AU  - Nikolić, Maria Vesna
AU  - Aleksić, Obrad S.
AU  - Radojčić, B. M.
AU  - Luković, Miloljub D.
AU  - Nikolić, N.
AU  - Đurić, Zorka Ž.
PY  - 2013
UR  - https://dais.sanu.ac.rs/123456789/678
AB  - NTC thermistor paste for printing thermal sensors on alumina was formed of very fine Ni0.5Cu0.2Zn1.0Mn1.3O4 thermistor powder obtained by a combined mechanical activation/thermal treatment process, organic vehicle and glass frit. Sheet resistivity was measured using an R-test matrix and it was much lower than the value determined for pure nickel manganite thermistors. The thermistor exponential coefficient was calculated from the R[ diagram measured in the temperature range-30 to +120°C in a climatic chamber. Thick film segmented thermistors with reduced dimensions (optimized construction) were printed sequentially layer by layer, dried and fired at 850°C/10 min in air. Electrodes were printed of PdAg conductive and solderable paste. The samples obtained were characterized by electrical and thermal measurements. The obtained NTC segmented thermistors with reduced dimensions were applied in a thermal sensor for water flow in the water mains. It contained a cold thermistor for measuring input water temperature and a self-heating thermistor for measuring the dependence of water current on water flow rate at a set input voltage power. Initial measurements show that the thermal sensor system requires a low input voltage power making it much easier and safer for operation.
PB  - Zurich : Trans Tech Publications Inc.
C3  - Materials and Applications for Sensors and Transducers II: Proceedings of the 2nd International Conference
T1  - Optimization and Application of NTC Thick Film Segmented Thermistors
EP  - 494
DO  - 10.4028/www.scientific.net/KEM.543.491
UR  - https://hdl.handle.net/21.15107/rcub_dais_678
ER  - 

@conference{
author = "Nikolić, Maria Vesna and Aleksić, Obrad S. and Radojčić, B. M. and Luković, Miloljub D. and Nikolić, N. and Đurić, Zorka Ž.",
year = "2013",
abstract = "NTC thermistor paste for printing thermal sensors on alumina was formed of very fine Ni0.5Cu0.2Zn1.0Mn1.3O4 thermistor powder obtained by a combined mechanical activation/thermal treatment process, organic vehicle and glass frit. Sheet resistivity was measured using an R-test matrix and it was much lower than the value determined for pure nickel manganite thermistors. The thermistor exponential coefficient was calculated from the R[ diagram measured in the temperature range-30 to +120°C in a climatic chamber. Thick film segmented thermistors with reduced dimensions (optimized construction) were printed sequentially layer by layer, dried and fired at 850°C/10 min in air. Electrodes were printed of PdAg conductive and solderable paste. The samples obtained were characterized by electrical and thermal measurements. The obtained NTC segmented thermistors with reduced dimensions were applied in a thermal sensor for water flow in the water mains. It contained a cold thermistor for measuring input water temperature and a self-heating thermistor for measuring the dependence of water current on water flow rate at a set input voltage power. Initial measurements show that the thermal sensor system requires a low input voltage power making it much easier and safer for operation.",
publisher = "Zurich : Trans Tech Publications Inc.",
journal = "Materials and Applications for Sensors and Transducers II: Proceedings of the 2nd International Conference",
title = "Optimization and Application of NTC Thick Film Segmented Thermistors",
pages = "494",
doi = "10.4028/www.scientific.net/KEM.543.491",
url = "https://hdl.handle.net/21.15107/rcub_dais_678"
}

Nikolić, M. V., Aleksić, O. S., Radojčić, B. M., Luković, M. D., Nikolić, N.,& Đurić, Z. Ž.. (2013). Optimization and Application of NTC Thick Film Segmented Thermistors. in Materials and Applications for Sensors and Transducers II: Proceedings of the 2nd International Conference
Zurich : Trans Tech Publications Inc...
https://doi.org/10.4028/www.scientific.net/KEM.543.491
https://hdl.handle.net/21.15107/rcub_dais_678

Nikolić MV, Aleksić OS, Radojčić BM, Luković MD, Nikolić N, Đurić ZŽ. Optimization and Application of NTC Thick Film Segmented Thermistors. in Materials and Applications for Sensors and Transducers II: Proceedings of the 2nd International Conference. 2013;:null-494.
doi:10.4028/www.scientific.net/KEM.543.491
https://hdl.handle.net/21.15107/rcub_dais_678 .

Nikolić, Maria Vesna, Aleksić, Obrad S., Radojčić, B. M., Luković, Miloljub D., Nikolić, N., Đurić, Zorka Ž., "Optimization and Application of NTC Thick Film Segmented Thermistors" in Materials and Applications for Sensors and Transducers II: Proceedings of the 2nd International Conference (2013),
https://doi.org/10.4028/www.scientific.net/KEM.543.491 .,
https://hdl.handle.net/21.15107/rcub_dais_678 .

TY  - JOUR
AU  - Aleksić, Obrad S.
AU  - Nikolić, Maria Vesna
AU  - Luković, Miloljub D.
AU  - Nikolić, N.
AU  - Radojčić, B. M.
AU  - Radovanović, Milan
AU  - Đurić, Zorka Ž.
AU  - Mitrić, Miodrag
AU  - Nikolić, Pantelija M.
PY  - 2013
UR  - https://dais.sanu.ac.rs/123456789/339
AB  - A simple ball milling/thermal treatment procedure was applied to obtain fine thermistor powders. Three different powder compositions were analyzed–Cu0.2Ni0.5Zn1.0Mn1.3O4, Cu0.25Ni0.5Zn1.0Mn1.25O4 and Cu0.4Ni0.5Mn2.1O4. XRD analysis showed that all three powder compositions had a cubic spinel structure. Correlation between the sintering temperature, structure and resulting electrical properties was analyzed on bulk samples. Thick film pastes were composed and segmented thick film thermistors were screen printed on alumina, dried and fired. SEM analysis revealed a typical dendrite structure with small grains and a developed surface area. Thick film sheet resistance was measured on a test matrix and the resistance decreased with increasing Cu content. The temperature dependence of sample resistance was measured in a climatic chamber enabling calculation of the material constant and activation energy. Aging of the obtained segmented thermistors was analyzed and the resistivity drift was 0.23% for the Cu0.2Ni0.5Zn1.0Mn1.3O4 NTC thick film thermistor confirming greater stability of thermistors containing Zn and Cu that in combination with the determined good thermistor characteristics make them good candidates for temperature and heat loss sensor applications.
PB  - Elsevier
T2  - Materials Science and Engineering: B
T1  - Preparation and characterization of Cu and Zn modified nickel manganite NTC powders and thick film thermistors
SP  - 202
EP  - 210
VL  - 178
IS  - 3
DO  - 10.1016/j.mseb.2012.11.003
UR  - https://hdl.handle.net/21.15107/rcub_dais_339
ER  - 

@article{
author = "Aleksić, Obrad S. and Nikolić, Maria Vesna and Luković, Miloljub D. and Nikolić, N. and Radojčić, B. M. and Radovanović, Milan and Đurić, Zorka Ž. and Mitrić, Miodrag and Nikolić, Pantelija M.",
year = "2013",
abstract = "A simple ball milling/thermal treatment procedure was applied to obtain fine thermistor powders. Three different powder compositions were analyzed–Cu0.2Ni0.5Zn1.0Mn1.3O4, Cu0.25Ni0.5Zn1.0Mn1.25O4 and Cu0.4Ni0.5Mn2.1O4. XRD analysis showed that all three powder compositions had a cubic spinel structure. Correlation between the sintering temperature, structure and resulting electrical properties was analyzed on bulk samples. Thick film pastes were composed and segmented thick film thermistors were screen printed on alumina, dried and fired. SEM analysis revealed a typical dendrite structure with small grains and a developed surface area. Thick film sheet resistance was measured on a test matrix and the resistance decreased with increasing Cu content. The temperature dependence of sample resistance was measured in a climatic chamber enabling calculation of the material constant and activation energy. Aging of the obtained segmented thermistors was analyzed and the resistivity drift was 0.23% for the Cu0.2Ni0.5Zn1.0Mn1.3O4 NTC thick film thermistor confirming greater stability of thermistors containing Zn and Cu that in combination with the determined good thermistor characteristics make them good candidates for temperature and heat loss sensor applications.",
publisher = "Elsevier",
journal = "Materials Science and Engineering: B",
title = "Preparation and characterization of Cu and Zn modified nickel manganite NTC powders and thick film thermistors",
pages = "202-210",
volume = "178",
number = "3",
doi = "10.1016/j.mseb.2012.11.003",
url = "https://hdl.handle.net/21.15107/rcub_dais_339"
}

Aleksić, O. S., Nikolić, M. V., Luković, M. D., Nikolić, N., Radojčić, B. M., Radovanović, M., Đurić, Z. Ž., Mitrić, M.,& Nikolić, P. M.. (2013). Preparation and characterization of Cu and Zn modified nickel manganite NTC powders and thick film thermistors. in Materials Science and Engineering: B
Elsevier., 178(3), 202-210.
https://doi.org/10.1016/j.mseb.2012.11.003
https://hdl.handle.net/21.15107/rcub_dais_339

Aleksić OS, Nikolić MV, Luković MD, Nikolić N, Radojčić BM, Radovanović M, Đurić ZŽ, Mitrić M, Nikolić PM. Preparation and characterization of Cu and Zn modified nickel manganite NTC powders and thick film thermistors. in Materials Science and Engineering: B. 2013;178(3):202-210.
doi:10.1016/j.mseb.2012.11.003
https://hdl.handle.net/21.15107/rcub_dais_339 .

Aleksić, Obrad S., Nikolić, Maria Vesna, Luković, Miloljub D., Nikolić, N., Radojčić, B. M., Radovanović, Milan, Đurić, Zorka Ž., Mitrić, Miodrag, Nikolić, Pantelija M., "Preparation and characterization of Cu and Zn modified nickel manganite NTC powders and thick film thermistors" in Materials Science and Engineering: B, 178, no. 3 (2013):202-210,
https://doi.org/10.1016/j.mseb.2012.11.003 .,
https://hdl.handle.net/21.15107/rcub_dais_339 .

TY  - JOUR
AU  - Nikolić, Maria Vesna
AU  - Radojčić, B. M.
AU  - Aleksić, Obrad S.
AU  - Luković, Miloljub D.
AU  - Nikolić, Pantelija M.
PY  - 2011
UR  - https://dais.sanu.ac.rs/123456789/733
AB  - A simple thermal (heat loss) sensor system was designed in a small plastic tube housing using a negative thermal coefficient (NTC) thick-film thermistor as a self-heating sensor. The voltage power supply [range constant voltage (RCV)-range constant voltage] uses the measured input water temperature to select the applied voltage in steps (up and down) in order to enable operation of the sensor at optimal sensitivity for different water temperatures. The input water temperature was measured using a “cold” NTC thick-film segmented thermistor. The measured calibration curves were modeled. Additional calculated curves were interpolated between the experimental curves in fine steps to cover each temperature of input water and can be used for determining the water volume flow rate or water velocity. The realized prototype flow meter inertia, stability, repeatability, and tolerance were measured and analyzed. The proposed intelligent RCV thermal flow meter system will include a smart power supply with range-constant-voltages (auto-range), a simple acquisition card and custom designed flow meter software.
PB  - IEEE
T2  - SIEEE Sensors Journal
T1  - A thermal sensor for water using self-heated NTC thick-film segmented thermistors
SP  - 1640
EP  - 1645
DO  - 10.1109/JSEN.2010.2103309
UR  - https://hdl.handle.net/21.15107/rcub_dais_733
ER  - 

@article{
author = "Nikolić, Maria Vesna and Radojčić, B. M. and Aleksić, Obrad S. and Luković, Miloljub D. and Nikolić, Pantelija M.",
year = "2011",
abstract = "A simple thermal (heat loss) sensor system was designed in a small plastic tube housing using a negative thermal coefficient (NTC) thick-film thermistor as a self-heating sensor. The voltage power supply [range constant voltage (RCV)-range constant voltage] uses the measured input water temperature to select the applied voltage in steps (up and down) in order to enable operation of the sensor at optimal sensitivity for different water temperatures. The input water temperature was measured using a “cold” NTC thick-film segmented thermistor. The measured calibration curves were modeled. Additional calculated curves were interpolated between the experimental curves in fine steps to cover each temperature of input water and can be used for determining the water volume flow rate or water velocity. The realized prototype flow meter inertia, stability, repeatability, and tolerance were measured and analyzed. The proposed intelligent RCV thermal flow meter system will include a smart power supply with range-constant-voltages (auto-range), a simple acquisition card and custom designed flow meter software.",
publisher = "IEEE",
journal = "SIEEE Sensors Journal",
title = "A thermal sensor for water using self-heated NTC thick-film segmented thermistors",
pages = "1640-1645",
doi = "10.1109/JSEN.2010.2103309",
url = "https://hdl.handle.net/21.15107/rcub_dais_733"
}

Nikolić, M. V., Radojčić, B. M., Aleksić, O. S., Luković, M. D.,& Nikolić, P. M.. (2011). A thermal sensor for water using self-heated NTC thick-film segmented thermistors. in SIEEE Sensors Journal
IEEE., 1640-1645.
https://doi.org/10.1109/JSEN.2010.2103309
https://hdl.handle.net/21.15107/rcub_dais_733

Nikolić MV, Radojčić BM, Aleksić OS, Luković MD, Nikolić PM. A thermal sensor for water using self-heated NTC thick-film segmented thermistors. in SIEEE Sensors Journal. 2011;:1640-1645.
doi:10.1109/JSEN.2010.2103309
https://hdl.handle.net/21.15107/rcub_dais_733 .

Nikolić, Maria Vesna, Radojčić, B. M., Aleksić, Obrad S., Luković, Miloljub D., Nikolić, Pantelija M., "A thermal sensor for water using self-heated NTC thick-film segmented thermistors" in SIEEE Sensors Journal (2011):1640-1645,
https://doi.org/10.1109/JSEN.2010.2103309 .,
https://hdl.handle.net/21.15107/rcub_dais_733 .

TY  - CONF
AU  - Ivetić, Tamara
AU  - Radojčić, B.
AU  - Nikolić, Maria Vesna
AU  - Luković, Miloljub D.
AU  - Aleksić, Obrad S.
PY  - 2010
UR  - https://dais.sanu.ac.rs/123456789/221
AB  - Poster presented at 12th Annual Conference of the Materials Research Society of Serbia - YUCOMAT 2010, Herceg Novi, Montenegro, 6–10. septembar 2010.
T1  - Segmented thermistors printed using NTC nanometric paste on alumina and Sr-ferrite substrates
UR  - https://hdl.handle.net/21.15107/rcub_dais_221
ER  - 

@conference{
author = "Ivetić, Tamara and Radojčić, B. and Nikolić, Maria Vesna and Luković, Miloljub D. and Aleksić, Obrad S.",
year = "2010",
abstract = "Poster presented at 12th Annual Conference of the Materials Research Society of Serbia - YUCOMAT 2010, Herceg Novi, Montenegro, 6–10. septembar 2010.",
title = "Segmented thermistors printed using NTC nanometric paste on alumina and Sr-ferrite substrates",
url = "https://hdl.handle.net/21.15107/rcub_dais_221"
}

Ivetić, T., Radojčić, B., Nikolić, M. V., Luković, M. D.,& Aleksić, O. S.. (2010). Segmented thermistors printed using NTC nanometric paste on alumina and Sr-ferrite substrates. .
https://hdl.handle.net/21.15107/rcub_dais_221

Ivetić T, Radojčić B, Nikolić MV, Luković MD, Aleksić OS. Segmented thermistors printed using NTC nanometric paste on alumina and Sr-ferrite substrates. 2010;.
https://hdl.handle.net/21.15107/rcub_dais_221 .

Ivetić, Tamara, Radojčić, B., Nikolić, Maria Vesna, Luković, Miloljub D., Aleksić, Obrad S., "Segmented thermistors printed using NTC nanometric paste on alumina and Sr-ferrite substrates" (2010),
https://hdl.handle.net/21.15107/rcub_dais_221 .

TY  - CONF
AU  - Menićanin, Aleksandar B.
AU  - Aleksić, Obrad S.
AU  - Nikolić, Maria Vesna
AU  - Savić, Slavica M.
AU  - Radojčić, B. M.
PY  - 2008
UR  - https://dais.sanu.ac.rs/123456789/3572
AB  - A novel uniaxial anemometer was created using a NTC thick film segmented thermistor to measure wind speed and direction. The anemometer operated on the principle of heat loss caused by the air volume flow and air speed. A NTC segmented thermistor served as a wind sensor in the anemometer. It was self-heated by a DC constant voltage. The self-heated DC current through the thermistor was changed by heat loss due to resistivity changes. The wind speed was varied from 1 to 15 m/s for different input air temperatures in the range of -20 to +40°C. The wind direction was determined by measuring voltage differences on the inner electrodes of the NTC segmented thermistor. The air temperature was measure by a cold NTC thick film segmented thermistor calibrated in the claim chamber. Anemometar inertia was measured at room temperature (at 25°C) and normal room humidity (at 50%). The results obtained enable fast optimization and implementation of a uniaxial anemometer in a 3D anemometer. © 2008 IEEE.
PB  - IEEE
C3  - 26th International Conference on Microelectronics, Proceedings, MIEL 2008
T1  - Novel uniaxial anemometer containing NTC thick film segmented thermistors
SP  - 349
EP  - 352
DO  - 10.1109/ICMEL.2008.4559293
UR  - https://hdl.handle.net/21.15107/rcub_dais_3572
ER  - 

@conference{
author = "Menićanin, Aleksandar B. and Aleksić, Obrad S. and Nikolić, Maria Vesna and Savić, Slavica M. and Radojčić, B. M.",
year = "2008",
abstract = "A novel uniaxial anemometer was created using a NTC thick film segmented thermistor to measure wind speed and direction. The anemometer operated on the principle of heat loss caused by the air volume flow and air speed. A NTC segmented thermistor served as a wind sensor in the anemometer. It was self-heated by a DC constant voltage. The self-heated DC current through the thermistor was changed by heat loss due to resistivity changes. The wind speed was varied from 1 to 15 m/s for different input air temperatures in the range of -20 to +40°C. The wind direction was determined by measuring voltage differences on the inner electrodes of the NTC segmented thermistor. The air temperature was measure by a cold NTC thick film segmented thermistor calibrated in the claim chamber. Anemometar inertia was measured at room temperature (at 25°C) and normal room humidity (at 50%). The results obtained enable fast optimization and implementation of a uniaxial anemometer in a 3D anemometer. © 2008 IEEE.",
publisher = "IEEE",
journal = "26th International Conference on Microelectronics, Proceedings, MIEL 2008",
title = "Novel uniaxial anemometer containing NTC thick film segmented thermistors",
pages = "349-352",
doi = "10.1109/ICMEL.2008.4559293",
url = "https://hdl.handle.net/21.15107/rcub_dais_3572"
}

Menićanin, A. B., Aleksić, O. S., Nikolić, M. V., Savić, S. M.,& Radojčić, B. M.. (2008). Novel uniaxial anemometer containing NTC thick film segmented thermistors. in 26th International Conference on Microelectronics, Proceedings, MIEL 2008
IEEE., 349-352.
https://doi.org/10.1109/ICMEL.2008.4559293
https://hdl.handle.net/21.15107/rcub_dais_3572

Menićanin AB, Aleksić OS, Nikolić MV, Savić SM, Radojčić BM. Novel uniaxial anemometer containing NTC thick film segmented thermistors. in 26th International Conference on Microelectronics, Proceedings, MIEL 2008. 2008;:349-352.
doi:10.1109/ICMEL.2008.4559293
https://hdl.handle.net/21.15107/rcub_dais_3572 .

Menićanin, Aleksandar B., Aleksić, Obrad S., Nikolić, Maria Vesna, Savić, Slavica M., Radojčić, B. M., "Novel uniaxial anemometer containing NTC thick film segmented thermistors" in 26th International Conference on Microelectronics, Proceedings, MIEL 2008 (2008):349-352,
https://doi.org/10.1109/ICMEL.2008.4559293 .,
https://hdl.handle.net/21.15107/rcub_dais_3572 .