Bilayer Structure Based Surface Acoustic Wave Sensor for Formaldehyde Detection

Zhi Hua Ying; Jia Hu; Cong Ping Wu; Yi Qing Yang; Liang Zheng; Kai Xin Song

doi:10.4028/www.scientific.net/AMR.664.986

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 664Bilayer Structure Based Surface Acoustic Wave...

Bilayer Structure Based Surface Acoustic Wave Sensor for Formaldehyde Detection

Abstract:

This study contributes to the measurements of formaldehyde at room temperature. A bilayer structure based surface acoustic wave (SAW) sensor has been fabricated and experimentally studied. The coating materials carbon nanotubes (CNTs) and poly (4-vinylphenol) (P4VP) were deposited by a spray-painting method onto SAW sensors configured as 433.92MHz two-port resonator-based oscillators. The results display high sensitivity and entirely reversibility. The response and recovery times of the bilayer structure are very short, and the response values are obviously greater than plus of the two single layers. Some sensing mechanisms between analytes and the bilayer structure SAW sensor will be discussed preliminarily.

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Advanced Materials Research (Volume 664)

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986-989

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.664.986

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Online since:

February 2013

Authors:

Zhi Hua Ying, Jia Hu, Cong Ping Wu, Yi Qing Yang, Liang Zheng, Kai Xin Song

Keywords:

Bilayer Structure, Carbon Nanotube (CN), Formaldehyde Detection, Surface Acoustic Wave Sensor

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