Fluctuations of the number of adsorbed micro/nanoparticles in sensors for measurement of particle concentration in air and liquid environments
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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 / nanoparticlesSource:
Chemical Industry and Chemical Engineering Quarterly, 2015, 21, 1-2, 141-147Publisher:
- Belgrade: Association of the Chemical Engineers of Serbia
Funding / 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
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Институт техничких наука САНУ / Institute of Technical Sciences of SASATY - JOUR AU - Jokić, Ivana AU - Đurić, Zoran G. AU - Radulović, Katarina AU - Frantlović, Miloš PY - 2015 UR - https://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 UR - https://hdl.handle.net/21.15107/rcub_dais_3538 ER -
@article{ author = "Jokić, Ivana and Đurić, Zoran G. and Radulović, Katarina and Frantlović, Miloš", year = "2015", 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", url = "https://hdl.handle.net/21.15107/rcub_dais_3538" }
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. in Chemical Industry and Chemical Engineering Quarterly Belgrade: Association of the Chemical Engineers of Serbia., 21(1-2), 141-147. https://doi.org/10.2298/CICEQ140219011J https://hdl.handle.net/21.15107/rcub_dais_3538
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. in Chemical Industry and Chemical Engineering Quarterly. 2015;21(1-2):141-147. doi:10.2298/CICEQ140219011J https://hdl.handle.net/21.15107/rcub_dais_3538 .
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" in Chemical Industry and Chemical Engineering Quarterly, 21, no. 1-2 (2015):141-147, https://doi.org/10.2298/CICEQ140219011J ., https://hdl.handle.net/21.15107/rcub_dais_3538 .