Investigation of a polymer-based SAW sensor to detect volatile organic compound (VOC)

Mohamad Sabri, Nur Fatin Nabilah and Za'bah, Nor Farahidah and Md Ralib @ Md Raghib, Aliza 'Aini (2023) Investigation of a polymer-based SAW sensor to detect volatile organic compound (VOC). Asian Journal of Electrical and Electronic Engineering, 3 (2). pp. 10-17. E-ISSN 2785-8189

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Abstract

Two surface acoustic wave (SAW) sensors with polyethyleneimine (PEI) and polyisobutylene (PIB) layers respectively are modelled by using COMSOL Multiphysics software to detect acetone, benzene, and toluene. The main parameter of the SAW sensor is the thickness of the sensing layer, and the concentration of VOCs is varied to study their relationships with regard to the sensitivity of the SAW sensor. Both configurations portrayed the same pattern where the frequency shift and the sensitivity increase as the concentration of VOCs increases. In addition, the two layers have also produced promising results in sensing toluene even as low as 5 ppm which means that both layers are more selective towards toluene when the three VOCs are concurrently presented on the surface of the sensor. The data also shows that in detecting acetone and benzene, the PEI layer showed higher shifts in frequencies as compared to the PIB layer.

Item Type:	Article (Journal)
Uncontrolled Keywords:	SAW sensor, Polymer, VOC
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7800 Electronics. Computer engineering. Computer hardware. Photoelectronic devices
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Electrical and Computer Engineering Kulliyyah of Engineering
Depositing User:	Dr. Nor Farahidah Za'bah
Date Deposited:	13 Oct 2023 15:14
Last Modified:	13 Oct 2023 15:25
URI:	http://irep.iium.edu.my/id/eprint/107462

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