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WO3-x Nanorod Arrays Based Sensors with High Sensitivity and Quick Response for Detecting Pollutants

Published online by Cambridge University Press:  01 February 2011

Xinpeng Wang
Affiliation:
david011608@hotmail.com, University of Puerto Rico, Department of Physics, San Juan, 00931, Puerto Rico
Jie Lou
Affiliation:
lou7502@mail.ustc.edu.cn, University of Science and Technology of China, Department of modern Physics, Hefei, 230026, China, People's Republic of
Zhenbo Wang
Affiliation:
wangzhenbo1008@yahoo.com.cn, Harbin Institute of Technology, Department of Applied Chemistry, Harbin, 150001, China, People's Republic of
Peter Xianping Feng
Affiliation:
pfeng@cnnet.upr.edu, University of Puerto Rico, Department of Physics, PO Box 23343, Department of Physics,, University of Puerto Rico, Rio Piedras Campus, San Juan, 00931, Puerto Rico
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Abstract

Tungsten oxide nanorod arrays deposited on the cylindrical substrate have been used for fabrication of a two-dimensional (2D) sensor. The sensibility and capacity towards methane and acetone at different temperatures have been examined. Experimental data have indicated that the newly designed sensor is highly sensitive to methane with low cross sensitivity towards possible mixed organic gas acetone, relying on the operating temperature. At room temperature (20°C), a quick response time and recovery time of the sensor, less than 10 ms, have been obtained.

Type
Research Article
Copyright
Copyright © Materials Research Society 2008

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