Fluctuations of the number of adsorbed molecules due to adsorption–desorption processes coupled with mass transfer and surface diffusion in bio/chemical MEMS sensors
Abstract
In this study we have developed, for the first time, the comprehensive theoretical model of the fluctuations of the number of adsorbed molecules in MEMS chemical and biological sensors, taking into account the processes of mass transfer, adsorption and desorption, and surface diffusion of adsorbed molecules. It is observed that the shape of the fluctuations spectrum contains information about various parameters of the adsorbed analyte and that even the analytes with the same affinity for the same binding sites have different spectra. The numerical calculations performed using the derived theory show that the influence of surface diffusion on the fluctuations spectrum can be significant. The practical value of this work stems from the fact that the fluctuations of the number of adsorbed molecules can be a dominant noise component in affinity-based bio/chemical sensors. Therefore, the derived theory is useful for development of the methods for the detection of analytes based on frequency... domain analysis of the measured fluctuations. The recognition of an adsorbed analyte using sensors with non-functionalized sensing surface will also be considered using the presented theory.
Keywords:
chemical sensors / biosensors / adsorption–desorption / mass transfer / surface diffusionSource:
Microelectronic Engineering, 2014, 124, 81-85Publisher:
- Elsevier
Projects:
- Directed synthesis, structure and properties of multifunctional materials (RS-172057)
- Micro- Nanosystems and Sensors for Electric Power and Process Industry and Environmental Protection (RS-32008)
- Serbian Academy of Sciences and Arts, Project F-150
Note:
- Poster: http://dais.sanu.ac.rs/handle/123456789/552
- Peer-reviewed manuscript: http://dais.sanu.ac.rs/123456789/4727
DOI: 10.1016/j.mee.2014.06.001
ISSN: 0167-9317
WoS: 000344825100016
Scopus: 2-s2.0-84903139520
Collections
TY - JOUR AU - Đurić, Zoran G. AU - Jokić, Ivana AU - Peleš, Adriana PY - 2014 UR - http://dais.sanu.ac.rs/123456789/541 AB - In this study we have developed, for the first time, the comprehensive theoretical model of the fluctuations of the number of adsorbed molecules in MEMS chemical and biological sensors, taking into account the processes of mass transfer, adsorption and desorption, and surface diffusion of adsorbed molecules. It is observed that the shape of the fluctuations spectrum contains information about various parameters of the adsorbed analyte and that even the analytes with the same affinity for the same binding sites have different spectra. The numerical calculations performed using the derived theory show that the influence of surface diffusion on the fluctuations spectrum can be significant. The practical value of this work stems from the fact that the fluctuations of the number of adsorbed molecules can be a dominant noise component in affinity-based bio/chemical sensors. Therefore, the derived theory is useful for development of the methods for the detection of analytes based on frequency domain analysis of the measured fluctuations. The recognition of an adsorbed analyte using sensors with non-functionalized sensing surface will also be considered using the presented theory. PB - Elsevier T2 - Microelectronic Engineering T1 - Fluctuations of the number of adsorbed molecules due to adsorption–desorption processes coupled with mass transfer and surface diffusion in bio/chemical MEMS sensors SP - 81 EP - 85 VL - 124 DO - 10.1016/j.mee.2014.06.001 ER -
@article{ author = "Đurić, Zoran G. and Jokić, Ivana and Peleš, Adriana", year = "2014", url = "http://dais.sanu.ac.rs/123456789/541", abstract = "In this study we have developed, for the first time, the comprehensive theoretical model of the fluctuations of the number of adsorbed molecules in MEMS chemical and biological sensors, taking into account the processes of mass transfer, adsorption and desorption, and surface diffusion of adsorbed molecules. It is observed that the shape of the fluctuations spectrum contains information about various parameters of the adsorbed analyte and that even the analytes with the same affinity for the same binding sites have different spectra. The numerical calculations performed using the derived theory show that the influence of surface diffusion on the fluctuations spectrum can be significant. The practical value of this work stems from the fact that the fluctuations of the number of adsorbed molecules can be a dominant noise component in affinity-based bio/chemical sensors. Therefore, the derived theory is useful for development of the methods for the detection of analytes based on frequency domain analysis of the measured fluctuations. The recognition of an adsorbed analyte using sensors with non-functionalized sensing surface will also be considered using the presented theory.", publisher = "Elsevier", journal = "Microelectronic Engineering", title = "Fluctuations of the number of adsorbed molecules due to adsorption–desorption processes coupled with mass transfer and surface diffusion in bio/chemical MEMS sensors", pages = "81-85", volume = "124", doi = "10.1016/j.mee.2014.06.001" }
Đurić ZG, Jokić I, Peleš A. Fluctuations of the number of adsorbed molecules due to adsorption–desorption processes coupled with mass transfer and surface diffusion in bio/chemical MEMS sensors. Microelectronic Engineering. 2014;124:81-85
Đurić, Z. G., Jokić, I.,& Peleš, A. (2014). Fluctuations of the number of adsorbed molecules due to adsorption–desorption processes coupled with mass transfer and surface diffusion in bio/chemical MEMS sensors. Microelectronic EngineeringElsevier., 124, 81-85. https://doi.org/10.1016/j.mee.2014.06.001
Đurić Zoran G., Jokić Ivana, Peleš Adriana, "Fluctuations of the number of adsorbed molecules due to adsorption–desorption processes coupled with mass transfer and surface diffusion in bio/chemical MEMS sensors" 124 (2014):81-85, https://doi.org/10.1016/j.mee.2014.06.001 .