In this paper the theory of the adsorption and desorption process of an arbitrary number of gases on the sensor surface is presented. It is assumed that the sorption follows the Langmuir isotherm. The exact expressions are derived for the power spectral density of the fluctuations of the number of adsorbed particles for each gas from the mixture, as well as for the total adsorbed mass fluctuation, using the analytical Langevin approach. Since these fluctuations cause adsorption-desorption (AD) noise, the presented theory enables determination of the limiting performance of various micro/nanoelectromechanical devices (micro/nanocantilever sensors and oscillators), resistive gas sensors and chemical and biochemical sensors based on surface plasmon resonance effect, and optimization of their parameters. This model is also applicable for the theoretical study of adsorption-desorption processes in general. We used it for investigation of the possibility of identification of gases in the mix...ture, based on the power spectral density of the adsorbed mass fluctuations. We also considered the possibility of the lowering the adsorbed mass fluctuations (i.e. AD noise level) by adding a certain amount of a gas to the mixture. As an example of the application of the presented theory, we calculate the fluctuations of the mass adsorbed on the surface of the silicon micro/nanocantilever sensor surrounded by the atmosphere of two and three gases.
Keywords:
Adsorbed mass fluctuations / Adsorption-desorption noise / Gas identification / Gas sensor / Microcantilever sensor
Source:
Sensors and Actuators, B: Chemical, 2007, 127, 2, 625-631
Publisher:
Elsevier
Funding / projects:
Swiss National Science Foundation – Project IB7320-110923.
TR6151 - Micro and Nanosystem Technologies, Structures and Sensors
TY - JOUR
AU - Đurić, Zoran G.
AU - Jokić, Ivana
AU - Frantlović, Miloš
AU - Jakšić, Olga
PY - 2007
UR - https://cer.ihtm.bg.ac.rs/handle/123456789/368
AB - In this paper the theory of the adsorption and desorption process of an arbitrary number of gases on the sensor surface is presented. It is assumed that the sorption follows the Langmuir isotherm. The exact expressions are derived for the power spectral density of the fluctuations of the number of adsorbed particles for each gas from the mixture, as well as for the total adsorbed mass fluctuation, using the analytical Langevin approach. Since these fluctuations cause adsorption-desorption (AD) noise, the presented theory enables determination of the limiting performance of various micro/nanoelectromechanical devices (micro/nanocantilever sensors and oscillators), resistive gas sensors and chemical and biochemical sensors based on surface plasmon resonance effect, and optimization of their parameters. This model is also applicable for the theoretical study of adsorption-desorption processes in general. We used it for investigation of the possibility of identification of gases in the mixture, based on the power spectral density of the adsorbed mass fluctuations. We also considered the possibility of the lowering the adsorbed mass fluctuations (i.e. AD noise level) by adding a certain amount of a gas to the mixture. As an example of the application of the presented theory, we calculate the fluctuations of the mass adsorbed on the surface of the silicon micro/nanocantilever sensor surrounded by the atmosphere of two and three gases.
PB - Elsevier
T2 - Sensors and Actuators, B: Chemical
T1 - Fluctuations of the number of particles and mass adsorbed on the sensor surface surrounded by a mixture of an arbitrary number of gases
VL - 127
IS - 2
SP - 625
EP - 631
DO - 10.1016/j.snb.2007.05.025
ER -
@article{
author = "Đurić, Zoran G. and Jokić, Ivana and Frantlović, Miloš and Jakšić, Olga",
year = "2007",
abstract = "In this paper the theory of the adsorption and desorption process of an arbitrary number of gases on the sensor surface is presented. It is assumed that the sorption follows the Langmuir isotherm. The exact expressions are derived for the power spectral density of the fluctuations of the number of adsorbed particles for each gas from the mixture, as well as for the total adsorbed mass fluctuation, using the analytical Langevin approach. Since these fluctuations cause adsorption-desorption (AD) noise, the presented theory enables determination of the limiting performance of various micro/nanoelectromechanical devices (micro/nanocantilever sensors and oscillators), resistive gas sensors and chemical and biochemical sensors based on surface plasmon resonance effect, and optimization of their parameters. This model is also applicable for the theoretical study of adsorption-desorption processes in general. We used it for investigation of the possibility of identification of gases in the mixture, based on the power spectral density of the adsorbed mass fluctuations. We also considered the possibility of the lowering the adsorbed mass fluctuations (i.e. AD noise level) by adding a certain amount of a gas to the mixture. As an example of the application of the presented theory, we calculate the fluctuations of the mass adsorbed on the surface of the silicon micro/nanocantilever sensor surrounded by the atmosphere of two and three gases.",
publisher = "Elsevier",
journal = "Sensors and Actuators, B: Chemical",
title = "Fluctuations of the number of particles and mass adsorbed on the sensor surface surrounded by a mixture of an arbitrary number of gases",
volume = "127",
number = "2",
pages = "625-631",
doi = "10.1016/j.snb.2007.05.025"
}
Đurić, Z. G., Jokić, I., Frantlović, M.,& Jakšić, O.. (2007). Fluctuations of the number of particles and mass adsorbed on the sensor surface surrounded by a mixture of an arbitrary number of gases. in Sensors and Actuators, B: Chemical
Elsevier., 127(2), 625-631.
https://doi.org/10.1016/j.snb.2007.05.025
Đurić ZG, Jokić I, Frantlović M, Jakšić O. Fluctuations of the number of particles and mass adsorbed on the sensor surface surrounded by a mixture of an arbitrary number of gases. in Sensors and Actuators, B: Chemical. 2007;127(2):625-631.
doi:10.1016/j.snb.2007.05.025 .
Đurić, Zoran G., Jokić, Ivana, Frantlović, Miloš, Jakšić, Olga, "Fluctuations of the number of particles and mass adsorbed on the sensor surface surrounded by a mixture of an arbitrary number of gases" in Sensors and Actuators, B: Chemical, 127, no. 2 (2007):625-631,
https://doi.org/10.1016/j.snb.2007.05.025 . .
