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Sensors (Basel)

Title:		Detection of Volatile Organic Compounds by Using MEMS Sensors
Author(s):		Arabi M; Alghamdi M; Kabel K; Labena A; Gado WS; Mavani B; Scott AJ; Penlidis A; Yavuz M; Abdel-Rahman E;
Address:		"Department of Systems Design Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada. National Center for Electronics and Defense Systems, King Abdulazaiz City for Science and Technology (KACST), Riyadh 12354, Saudi Arabia. Department of Petroleum Applications, Egyptian Petroleum Research Institute (EPRI), Cairo 11727, Egypt. Department of Processes Design & Development, Egyptian Petroleum Research Institute (EPRI), Cairo 11727, Egypt. Department of Petrochemicals, Egyptian Petroleum Research Institute (EPRI), Cairo 11727, Egypt. Department of Chemical Engineering, Institute for Polymer Research (IPR), University of Waterloo, Waterloo, ON N2L 3G1, Canada. Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada"
Journal Title:		Sensors (Basel)
Year:		2022
Volume:		20220528
Issue:		11
Page Number:		-
DOI:		10.3390/s22114102
ISSN/ISBN:		1424-8220 (Electronic) 1424-8220 (Linking)
Abstract:		"We report on the deployment of MEMS static bifurcation (DC) sensors for the detection of volatile organic compounds (VOCs): hydrogen sulfide and formaldehyde. We demonstrate a sensor that can detect as low as a few ppm of hydrogen sulfide. We also demonstrate a sensor array that can selectively detect formaldehyde in the presence of benzene, a closely related interferent. Toward that end, we investigate the sensitivity and selectivity of two detector polymers-polyaniline (PANI) and poly (2,5-dimethyl aniline) (P25DMA)-to both gases. A semiautomatic method is developed to functionalize individual sensors and sensor arrays with the detector polymers. We found that the sensor array can selectively sense 1 ppm of formaldehyde in the presence of benzene"
Keywords:		Benzene Formaldehyde *Hydrogen Sulfide *Micro-Electrical-Mechanical Systems Polymers *Volatile Organic Compounds Mems VOCs bifurcation electrostatic;
Notes:		"MedlineArabi, Mohamed Alghamdi, Majed Kabel, Khalid Labena, Ahmed Gado, Walaa S Mavani, Bhoomi Scott, Alison J Penlidis, Alexander Yavuz, Mustafa Abdel-Rahman, Eihab eng Switzerland 2022/06/11 Sensors (Basel). 2022 May 28; 22(11):4102. doi: 10.3390/s22114102"