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Sci Rep

Title:		Detection of Volatile Organic Compounds by Self-assembled Monolayer Coated Sensor Array with Concentration-independent Fingerprints
Author(s):		Chang Y; Tang N; Qu H; Liu J; Zhang D; Zhang H; Pang W; Duan X;
Address:		"State Key Laboratory of Precision Measuring Technology &Instruments, College of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China"
Journal Title:		Sci Rep
Year:		2016
Volume:		20160405
Issue:
Page Number:		23970 -
DOI:		10.1038/srep23970
ISSN/ISBN:		2045-2322 (Electronic) 2045-2322 (Linking)
Abstract:		"In this paper, we have modeled and analyzed affinities and kinetics of volatile organic compounds (VOCs) adsorption (and desorption) on various surface chemical groups using multiple self-assembled monolayers (SAMs) functionalized film bulk acoustic resonator (FBAR) array. The high-frequency and micro-scale resonator provides improved sensitivity in the detections of VOCs at trace levels. With the study of affinities and kinetics, three concentration-independent intrinsic parameters (monolayer adsorption capacity, adsorption energy constant and desorption rate) of gas-surface interactions are obtained to contribute to a multi-parameter fingerprint library of VOC analytes. Effects of functional group's properties on gas-surface interactions are also discussed. The proposed sensor array with concentration-independent fingerprint library shows potential as a portable electronic nose (e-nose) system for VOCs discrimination and gas-sensitive materials selections"
Keywords:
Notes:		"PubMed-not-MEDLINEChang, Ye Tang, Ning Qu, Hemi Liu, Jing Zhang, Daihua Zhang, Hao Pang, Wei Duan, Xuexin eng Research Support, Non-U.S. Gov't England 2016/04/06 Sci Rep. 2016 Apr 5; 6:23970. doi: 10.1038/srep23970"