A chemisorption-based microcantilever chemical sensor for the detection of trimethylamine
A chemisorption-based microcantilever chemical sensor for the detection of trimethylamine
复制标题
一种基于化学吸附的微悬臂梁化学传感器,用于检测三甲胺
DOI:
10.1016/j.snb.2009.12.050
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发表时间:
2010-03
影响因子:
8.4
通讯作者:
Zheyao Wang
中科院分区:
文献类型:
--
作者:
Youzheng Zhou;Xin Huang;Rui Yang;Litian Liu;Zheyao Wang
This paper presents a new method for detecting trimethylamine (TMA) in gas and liquid phases using a piezoresistive microcantilever sensor functionalized with a self-assembled monolayer (SAM). The microcantilever consists of two silicon dioxide layers and a single crystalline silicon piezoresistor in-between. This configuration allows microcantilevers to achieve high sensitivity because of the low stiffness of silicon dioxide and the high piezoresistive coefficients of single crystalline silicon. The surface of the microcantilever is chemically functionalized with a self-assembled monolayer of 11-mercaptoundecanoic acid (11-MUA) via Au–SH covalent bonding on a gold film deposited on the microcantilever. The 11-MUA SAM adsorbs TMA through hydrogen bonding between the SAM and TMA molecules, and the microcantilever is deflected by the changes in the surface stress as a result of the hydrogen bonding based chemisorption. Experimental results show that the deflection of the microcantilever depends on the concentration of TMA, and the minimum detection limits of 10mg/L for liquid TMA and 1.65μg/L for gas TMA are achieved. The selectivity of TMA with respect to ethanol, acetone, and butanone is also investigated.
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影响因子:
15
作者:
Wash, PL;Maverick, E;Lightner, DA
通讯作者:
Lightner, DA
影响因子:
2.3
作者:
Wenzhou Ruan;Youzheng Zhou;Litian Liu;Zheyao Wang;Chaonan Wang
通讯作者:
Chaonan Wang
影响因子:
8.4
作者:
Sung-hyun Park;J. Ryu;Hyek-Hwan Choi;T. Kwon
通讯作者:
Sung-hyun Park;J. Ryu;Hyek-Hwan Choi;T. Kwon
影响因子:
8.4
作者:
G. Dai
通讯作者:
G. Dai
DOI:
10.1002/chin.200135285
发表时间:
2001-08
期刊:
ChemInform
影响因子:
--
作者:
L. J. Prins;D. Reinhoudt;P. Timmerman
通讯作者:
L. J. Prins;D. Reinhoudt;P. Timmerman