TY  - JOUR
AU  - Aleksić, Stanko O.
AU  - Mitrović, Nebojša S.
AU  - Luković, Miloljub
AU  - Luković, Snežana
AU  - Nikolić, Nenad
PY  - 2021
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1397
AB  - Novel heat loss flowmeter for water consists of the small plastic housing and two NTC thick film segmented thermistors with reduced dimensions placed along the main axis. The segmented thermistors were printed using the modified nickel-manganese paste and sintered in air at 850 degrees C / 10 min in the conveyor furnace. The first thermistor Th-1 is cold and measures input water temperature and the second thermistor Th-2 is self-heated at constant voltage and measures water flow rate. A short switch mode operating cycle for the self-heating thermistor was introduced: 30s of self-heating from the initial state and after that 90s of natural cooling to the initial state. The self heating DC current in 30th second I-30 is recognized as the flowmeter response on stable water flow Q, while input water temperature T-w was used as a parameter. The flowmeter temperature range was divided in a few sub-ranges and adaptive DC voltage power supply (RCV) was introduced for each sub-range. The flowmeter measuring range and inaccuracy were compared with respective ones of other flowmeters.
PB  - IEEE-Inst Electrical Electronics Engineers Inc, Piscataway
T2  - IEEE Sensors Journal
T1  - Heat Loss Flowmeter for Water Based on Thick Film Thermistors in Power Save Regime
EP  - 206
IS  - 1
SP  - 199
VL  - 21
DO  - 10.1109/JSEN.2020.3015023
ER  - 

@article{
author = "Aleksić, Stanko O. and Mitrović, Nebojša S. and Luković, Miloljub and Luković, Snežana and Nikolić, Nenad",
year = "2021",
abstract = "Novel heat loss flowmeter for water consists of the small plastic housing and two NTC thick film segmented thermistors with reduced dimensions placed along the main axis. The segmented thermistors were printed using the modified nickel-manganese paste and sintered in air at 850 degrees C / 10 min in the conveyor furnace. The first thermistor Th-1 is cold and measures input water temperature and the second thermistor Th-2 is self-heated at constant voltage and measures water flow rate. A short switch mode operating cycle for the self-heating thermistor was introduced: 30s of self-heating from the initial state and after that 90s of natural cooling to the initial state. The self heating DC current in 30th second I-30 is recognized as the flowmeter response on stable water flow Q, while input water temperature T-w was used as a parameter. The flowmeter temperature range was divided in a few sub-ranges and adaptive DC voltage power supply (RCV) was introduced for each sub-range. The flowmeter measuring range and inaccuracy were compared with respective ones of other flowmeters.",
publisher = "IEEE-Inst Electrical Electronics Engineers Inc, Piscataway",
journal = "IEEE Sensors Journal",
title = "Heat Loss Flowmeter for Water Based on Thick Film Thermistors in Power Save Regime",
pages = "206-199",
number = "1",
volume = "21",
doi = "10.1109/JSEN.2020.3015023"
}

Aleksić, S. O., Mitrović, N. S., Luković, M., Luković, S.,& Nikolić, N.. (2021). Heat Loss Flowmeter for Water Based on Thick Film Thermistors in Power Save Regime. in IEEE Sensors Journal
IEEE-Inst Electrical Electronics Engineers Inc, Piscataway., 21(1), 199-206.
https://doi.org/10.1109/JSEN.2020.3015023

Aleksić SO, Mitrović NS, Luković M, Luković S, Nikolić N. Heat Loss Flowmeter for Water Based on Thick Film Thermistors in Power Save Regime. in IEEE Sensors Journal. 2021;21(1):199-206.
doi:10.1109/JSEN.2020.3015023 .

Aleksić, Stanko O., Mitrović, Nebojša S., Luković, Miloljub, Luković, Snežana, Nikolić, Nenad, "Heat Loss Flowmeter for Water Based on Thick Film Thermistors in Power Save Regime" in IEEE Sensors Journal, 21, no. 1 (2021):199-206,
https://doi.org/10.1109/JSEN.2020.3015023 . .

TY  - JOUR
AU  - Aleksić, Stanko O.
AU  - Mitrović, Nebojša S.
AU  - Luković, Miloljub
AU  - Veljović-Jovanović, Sonja
AU  - Luković, Snežana
AU  - Nikolić, Maria Vesna
AU  - Aleksić, Obrad
PY  - 2018
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1168
AB  - A new ground temperature profile sensor comprising of a row of thermistors enables a large number of equidistantly arranged measuring points. The row of thermistors was formed using a group of negative temperature coefficient thick film segmented thermistors connected in series. After that calibration of the DC thermistor resistance R was performed at room temperature and the sensor was placed in a hole drilled on the lawn. DC resistances R of the row of thermistors were measured versus depth z as a parameter and converted to actual temperature T(z) in the ground using the Steinhart-Hart equation. The temperature profile of the ground depending on deepness z and time t as a function T(t, z) was measured on different days during one year in the early morning and in the afternoon. The temperature at the ground surface was compared with the temperature of the deepest sensor point in the ground. Thermal diffusivity D of the ground was determined using measured data T(t, z) in the periods of steady ground temperatures. The new ground temperature profile sensor was realized to investigate the correlation between air and ground temperature, observation of ground temperature profile changes and heat exchange (heat transfer, diffusion, gradient, and heat flow direction) through the ground top layer and finally humidity estimation versus deepness.
PB  - IEEE-Inst Electrical Electronics Engineers Inc, Piscataway
T2  - IEEE Sensors Journal
T1  - A Ground Temperature Profile Sensor Based on NTC Thick Film Segmented Thermistors: Main Properties and Applications
EP  - 4421
IS  - 11
SP  - 4414
VL  - 18
DO  - 10.1109/JSEN.2018.2820123
ER  - 

@article{
author = "Aleksić, Stanko O. and Mitrović, Nebojša S. and Luković, Miloljub and Veljović-Jovanović, Sonja and Luković, Snežana and Nikolić, Maria Vesna and Aleksić, Obrad",
year = "2018",
abstract = "A new ground temperature profile sensor comprising of a row of thermistors enables a large number of equidistantly arranged measuring points. The row of thermistors was formed using a group of negative temperature coefficient thick film segmented thermistors connected in series. After that calibration of the DC thermistor resistance R was performed at room temperature and the sensor was placed in a hole drilled on the lawn. DC resistances R of the row of thermistors were measured versus depth z as a parameter and converted to actual temperature T(z) in the ground using the Steinhart-Hart equation. The temperature profile of the ground depending on deepness z and time t as a function T(t, z) was measured on different days during one year in the early morning and in the afternoon. The temperature at the ground surface was compared with the temperature of the deepest sensor point in the ground. Thermal diffusivity D of the ground was determined using measured data T(t, z) in the periods of steady ground temperatures. The new ground temperature profile sensor was realized to investigate the correlation between air and ground temperature, observation of ground temperature profile changes and heat exchange (heat transfer, diffusion, gradient, and heat flow direction) through the ground top layer and finally humidity estimation versus deepness.",
publisher = "IEEE-Inst Electrical Electronics Engineers Inc, Piscataway",
journal = "IEEE Sensors Journal",
title = "A Ground Temperature Profile Sensor Based on NTC Thick Film Segmented Thermistors: Main Properties and Applications",
pages = "4421-4414",
number = "11",
volume = "18",
doi = "10.1109/JSEN.2018.2820123"
}

Aleksić, S. O., Mitrović, N. S., Luković, M., Veljović-Jovanović, S., Luković, S., Nikolić, M. V.,& Aleksić, O.. (2018). A Ground Temperature Profile Sensor Based on NTC Thick Film Segmented Thermistors: Main Properties and Applications. in IEEE Sensors Journal
IEEE-Inst Electrical Electronics Engineers Inc, Piscataway., 18(11), 4414-4421.
https://doi.org/10.1109/JSEN.2018.2820123

Aleksić SO, Mitrović NS, Luković M, Veljović-Jovanović S, Luković S, Nikolić MV, Aleksić O. A Ground Temperature Profile Sensor Based on NTC Thick Film Segmented Thermistors: Main Properties and Applications. in IEEE Sensors Journal. 2018;18(11):4414-4421.
doi:10.1109/JSEN.2018.2820123 .

Aleksić, Stanko O., Mitrović, Nebojša S., Luković, Miloljub, Veljović-Jovanović, Sonja, Luković, Snežana, Nikolić, Maria Vesna, Aleksić, Obrad, "A Ground Temperature Profile Sensor Based on NTC Thick Film Segmented Thermistors: Main Properties and Applications" in IEEE Sensors Journal, 18, no. 11 (2018):4414-4421,
https://doi.org/10.1109/JSEN.2018.2820123 . .

TY  - CONF
AU  - Luković, Miloljub
AU  - Nikolić, Maria Vesna
AU  - Vasiljević, Zorka Z
AU  - Blaz, Nelu V.
AU  - Luković, Snežana
AU  - Aleksić, Obrad
PY  - 2017
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1073
AB  - We have investigated the impedance response of pseudobrookite thick films screen printed on alumina substrate in the temperature interval from room temperature to 350 degrees C in the frequency range 100 Hz - 1 MHz. Two thick film pastes were made containing starting hematite and anatase nanopowders (in the 1:1 and 1:1.33 molar ratio - containing excess anatase), glass fritt and organic vehicle. A sandwich PdAg electrode structure was obtained by first printing a PdAg electrode, followed by 3 layers of PSB paste and a PdAg electrode on top with a mesh structure. Each layer was sintered at 850 degrees C in a hybrid conveyor furnace. XRD analysis confirmed the formation of pseudobrookite with an orthorhombic crystal structure. SEM analysis of thick film surfaces and cross sections showed the formation of a porous structure with rod-shaped grains. The impedance response of pseudobrookite thick films, showed a decrease with the rise in sample temperature. It was analyzed using an equivalent circuit reflecting the dominant influence of grain boundaries.
PB  - IEEE Computer Society
C3  - Proceedings of the International Spring Seminar on Electronics Technology
T1  - Impedance Response of Pseudobrookite Thick Films with a Sandwich Configuration
DO  - 10.1109/ISSE.2017.8000886
ER  - 

@conference{
author = "Luković, Miloljub and Nikolić, Maria Vesna and Vasiljević, Zorka Z and Blaz, Nelu V. and Luković, Snežana and Aleksić, Obrad",
year = "2017",
abstract = "We have investigated the impedance response of pseudobrookite thick films screen printed on alumina substrate in the temperature interval from room temperature to 350 degrees C in the frequency range 100 Hz - 1 MHz. Two thick film pastes were made containing starting hematite and anatase nanopowders (in the 1:1 and 1:1.33 molar ratio - containing excess anatase), glass fritt and organic vehicle. A sandwich PdAg electrode structure was obtained by first printing a PdAg electrode, followed by 3 layers of PSB paste and a PdAg electrode on top with a mesh structure. Each layer was sintered at 850 degrees C in a hybrid conveyor furnace. XRD analysis confirmed the formation of pseudobrookite with an orthorhombic crystal structure. SEM analysis of thick film surfaces and cross sections showed the formation of a porous structure with rod-shaped grains. The impedance response of pseudobrookite thick films, showed a decrease with the rise in sample temperature. It was analyzed using an equivalent circuit reflecting the dominant influence of grain boundaries.",
publisher = "IEEE Computer Society",
journal = "Proceedings of the International Spring Seminar on Electronics Technology",
title = "Impedance Response of Pseudobrookite Thick Films with a Sandwich Configuration",
doi = "10.1109/ISSE.2017.8000886"
}

Luković, M., Nikolić, M. V., Vasiljević, Z. Z., Blaz, N. V., Luković, S.,& Aleksić, O.. (2017). Impedance Response of Pseudobrookite Thick Films with a Sandwich Configuration. in Proceedings of the International Spring Seminar on Electronics Technology
IEEE Computer Society..
https://doi.org/10.1109/ISSE.2017.8000886

Luković M, Nikolić MV, Vasiljević ZZ, Blaz NV, Luković S, Aleksić O. Impedance Response of Pseudobrookite Thick Films with a Sandwich Configuration. in Proceedings of the International Spring Seminar on Electronics Technology. 2017;.
doi:10.1109/ISSE.2017.8000886 .

Luković, Miloljub, Nikolić, Maria Vesna, Vasiljević, Zorka Z, Blaz, Nelu V., Luković, Snežana, Aleksić, Obrad, "Impedance Response of Pseudobrookite Thick Films with a Sandwich Configuration" in Proceedings of the International Spring Seminar on Electronics Technology (2017),
https://doi.org/10.1109/ISSE.2017.8000886 . .

TY  - JOUR
AU  - Milutinov, Miodrag M.
AU  - Nikolić, Maria Vesna
AU  - Luković, Snežana
AU  - Blaz, Nelu V.
AU  - Labus, Nebojša J.
AU  - Aleksić, Obrad
AU  - Živanov, Ljiljana D
PY  - 2017
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1088
AB  - In this paper, the influence of additional sieving and milling of starting industrial Mn-Zn powders on magnetic properties was investigated. The starting powder was milled for 60 minutes, followed by sieving through 325 and 400 meshes. The starting and milled powders were used to fabricate toroid shaped samples sintered at 1200 degrees C for 2 hours. Structural parameters of the fabricated samples were analysed by X-ray diffraction and scanning electron microscopy. Complex permeability, core loss density, and hysteresis were measured using the modified watt-meter method. The complex permeability and hysteresis loop were modelled with a new model proposed in the paper. The core loss density was modelled with the Steinmetz empirical equation. The experimental results and calculations show the significance of the additional milling and sieving process on magnetic properties of Mn-Zn ferrite in the frequency range 0.1-10MHz. These processes increase the relative permeability about 3 times and decrease the core loss 4 times by milling of the starting powder.
PB  - Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad
T2  - Processing and Application of Ceramics
T1  - Influence of starting powder milling on magnetic properties of Mn-Zn ferrite
EP  - 169
IS  - 2
SP  - 160
VL  - 11
DO  - 10.2298/PAC1702160M
ER  - 

@article{
author = "Milutinov, Miodrag M. and Nikolić, Maria Vesna and Luković, Snežana and Blaz, Nelu V. and Labus, Nebojša J. and Aleksić, Obrad and Živanov, Ljiljana D",
year = "2017",
abstract = "In this paper, the influence of additional sieving and milling of starting industrial Mn-Zn powders on magnetic properties was investigated. The starting powder was milled for 60 minutes, followed by sieving through 325 and 400 meshes. The starting and milled powders were used to fabricate toroid shaped samples sintered at 1200 degrees C for 2 hours. Structural parameters of the fabricated samples were analysed by X-ray diffraction and scanning electron microscopy. Complex permeability, core loss density, and hysteresis were measured using the modified watt-meter method. The complex permeability and hysteresis loop were modelled with a new model proposed in the paper. The core loss density was modelled with the Steinmetz empirical equation. The experimental results and calculations show the significance of the additional milling and sieving process on magnetic properties of Mn-Zn ferrite in the frequency range 0.1-10MHz. These processes increase the relative permeability about 3 times and decrease the core loss 4 times by milling of the starting powder.",
publisher = "Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad",
journal = "Processing and Application of Ceramics",
title = "Influence of starting powder milling on magnetic properties of Mn-Zn ferrite",
pages = "169-160",
number = "2",
volume = "11",
doi = "10.2298/PAC1702160M"
}

Milutinov, M. M., Nikolić, M. V., Luković, S., Blaz, N. V., Labus, N. J., Aleksić, O.,& Živanov, L. D.. (2017). Influence of starting powder milling on magnetic properties of Mn-Zn ferrite. in Processing and Application of Ceramics
Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad., 11(2), 160-169.
https://doi.org/10.2298/PAC1702160M

Milutinov MM, Nikolić MV, Luković S, Blaz NV, Labus NJ, Aleksić O, Živanov LD. Influence of starting powder milling on magnetic properties of Mn-Zn ferrite. in Processing and Application of Ceramics. 2017;11(2):160-169.
doi:10.2298/PAC1702160M .

Milutinov, Miodrag M., Nikolić, Maria Vesna, Luković, Snežana, Blaz, Nelu V., Labus, Nebojša J., Aleksić, Obrad, Živanov, Ljiljana D, "Influence of starting powder milling on magnetic properties of Mn-Zn ferrite" in Processing and Application of Ceramics, 11, no. 2 (2017):160-169,
https://doi.org/10.2298/PAC1702160M . .