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Fluctuations of the number of adsorbed micro/nanoparticles in sensors for measurement of particle concentration in air and liquid environments

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2015
Jokic_2015_Chemical-Industry-and-Chemical-Engineering-Quarterly_21_141.pdf (2.657Mb)
Authors
Jokić, Ivana
Đurić, Zoran G.
Radulović, Katarina
Frantlović, Miloš
Article (Published version)
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Abstract
A theoretical model of fluctuations of the number of adsorbed micro/nanoparticles in environmental sensors operating in air and liquids is presented, taking into account the effects of the mass transfer processes of the target particles in a sensor reaction chamber. The expressions for the total power of the corresponding adsorption-desorption noise, and for the corresponding signal-to-noise ratio are also derived. The presented analysis shows that the transfer processes can have a significant influence on the sensors limiting performance. The influence on both the fluctuations spectrum and the signal-to-noise ratio is estimated at different values of target particles concentration, functionalization sites surface density, and adsorption and desorption rate constants (the values are chosen from the ranges corresponding to real conditions). The analysis provides the guidelines for optimization of sensor design and operating conditions for the given target substance and sensor functional...ization, in order to decrease the influence of the mass transfer, thus improving the ultimate performance (e.g., minimal detectable signal, signal-to-noise ratio) of sensors for particle detection. The calculations we performed show that it is possible to increase the signal-to-noise ratio for as much as two orders of magnitude by using optimization that eliminates the mass transfer influence. © 2015, CI and CEQ. All Rights Reserved.

Keywords:
adsorption-based sensors / environmental sensors / mass transfer / microparticles / signal-to-noise ratio / nanoparticles
Source:
Chemical Industry and Chemical Engineering Quarterly, 2015, 21, 1-2, 141-147
Publisher:
  • Belgrade: Association of the Chemical Engineers of Serbia
Projects:
  • Micro- Nanosystems and Sensors for Electric Power and Process Industry and Environmental Protection (RS-32008)
  • Serbian Academy of Sciences and Arts, Project F-150

DOI: 10.2298/CICEQ140219011J

ISSN: 1451-9372 (Print); 2217-7434 (Online)

WoS: 000354755600001

Scopus: 2-s2.0-84928942826
[ Google Scholar ]
URI
http://dais.sanu.ac.rs/123456789/3538
Collections
  • Општа колекција САНУ / General collection of SASA
  • ITN SANU - Opšta kolekcija / ITS SASA - General collection
Institution
Институт техничких наука САНУ / Institute of Technical Sciences of SASA
TY  - JOUR
AU  - Jokić, Ivana
AU  - Đurić, Zoran G.
AU  - Radulović, Katarina
AU  - Frantlović, Miloš
PY  - 2015
UR  - http://dais.sanu.ac.rs/123456789/3538
AB  - A theoretical model of fluctuations of the number of adsorbed micro/nanoparticles in environmental sensors operating in air and liquids is presented, taking into account the effects of the mass transfer processes of the target particles in a sensor reaction chamber. The expressions for the total power of the corresponding adsorption-desorption noise, and for the corresponding signal-to-noise ratio are also derived. The presented analysis shows that the transfer processes can have a significant influence on the sensors limiting performance. The influence on both the fluctuations spectrum and the signal-to-noise ratio is estimated at different values of target particles concentration, functionalization sites surface density, and adsorption and desorption rate constants (the values are chosen from the ranges corresponding to real conditions). The analysis provides the guidelines for optimization of sensor design and operating conditions for the given target substance and sensor functionalization, in order to decrease the influence of the mass transfer, thus improving the ultimate performance (e.g., minimal detectable signal, signal-to-noise ratio) of sensors for particle detection. The calculations we performed show that it is possible to increase the signal-to-noise ratio for as much as two orders of magnitude by using optimization that eliminates the mass transfer influence. © 2015, CI and CEQ. All Rights Reserved.
PB  - Belgrade: Association of the Chemical Engineers of Serbia
T2  - Chemical Industry and Chemical Engineering Quarterly
T1  - Fluctuations of the number of adsorbed micro/nanoparticles in sensors for measurement of particle concentration in air and liquid environments
SP  - 141
EP  - 147
VL  - 21
IS  - 1-2
DO  - 10.2298/CICEQ140219011J
ER  - 
@article{
author = "Jokić, Ivana and Đurić, Zoran G. and Radulović, Katarina and Frantlović, Miloš",
year = "2015",
url = "http://dais.sanu.ac.rs/123456789/3538",
abstract = "A theoretical model of fluctuations of the number of adsorbed micro/nanoparticles in environmental sensors operating in air and liquids is presented, taking into account the effects of the mass transfer processes of the target particles in a sensor reaction chamber. The expressions for the total power of the corresponding adsorption-desorption noise, and for the corresponding signal-to-noise ratio are also derived. The presented analysis shows that the transfer processes can have a significant influence on the sensors limiting performance. The influence on both the fluctuations spectrum and the signal-to-noise ratio is estimated at different values of target particles concentration, functionalization sites surface density, and adsorption and desorption rate constants (the values are chosen from the ranges corresponding to real conditions). The analysis provides the guidelines for optimization of sensor design and operating conditions for the given target substance and sensor functionalization, in order to decrease the influence of the mass transfer, thus improving the ultimate performance (e.g., minimal detectable signal, signal-to-noise ratio) of sensors for particle detection. The calculations we performed show that it is possible to increase the signal-to-noise ratio for as much as two orders of magnitude by using optimization that eliminates the mass transfer influence. © 2015, CI and CEQ. All Rights Reserved.",
publisher = "Belgrade: Association of the Chemical Engineers of Serbia",
journal = "Chemical Industry and Chemical Engineering Quarterly",
title = "Fluctuations of the number of adsorbed micro/nanoparticles in sensors for measurement of particle concentration in air and liquid environments",
pages = "141-147",
volume = "21",
number = "1-2",
doi = "10.2298/CICEQ140219011J"
}
Jokić I, Đurić ZG, Radulović K, Frantlović M. Fluctuations of the number of adsorbed micro/nanoparticles in sensors for measurement of particle concentration in air and liquid environments. Chemical Industry and Chemical Engineering Quarterly. 2015;21(1-2):141-147
Jokić, I., Đurić, Z. G., Radulović, K.,& Frantlović, M. (2015). Fluctuations of the number of adsorbed micro/nanoparticles in sensors for measurement of particle concentration in air and liquid environments.
Chemical Industry and Chemical Engineering QuarterlyBelgrade: Association of the Chemical Engineers of Serbia., 21(1-2), 141-147.
https://doi.org/10.2298/CICEQ140219011J
Jokić Ivana, Đurić Zoran G., Radulović Katarina, Frantlović Miloš, "Fluctuations of the number of adsorbed micro/nanoparticles in sensors for measurement of particle concentration in air and liquid environments" 21, no. 1-2 (2015):141-147,
https://doi.org/10.2298/CICEQ140219011J .

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