A compact wireless gas sensor using a carbon nanotube/PMMA thin film chemiresistor

被引：153
作者：
Abraham, JK [1 ]
Philip, B
Witchurch, A
Varadan, VK
Reddy, CC
机构：
[1] Penn State Univ, Ctr Engn Elect & Acoust Mat & Devices, University Pk, PA 16802 USA
[2] Penn State Univ, Huck Inst Life Sci, University Pk, PA 16802 USA
来源：
SMART MATERIALS & STRUCTURES | 2004年 / 13卷 / 05期
关键词：
D O I：
10.1088/0964-1726/13/5/010
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The design and development of a compact wireless gas sensor with a surface modified multiwalled carbon nanotube (f-CNT) chemiresistor as the sensing element is presented in this paper. f-CNT/polymer composite sensing film is patterned on a printed circuit board and is integrated to the wireless system. The change in resistance of the CNT/polymer composite film due to exposure of different gases is utilized as the principle of this gas sensor. The response for different organic vapors are evaluated and it is observed that the f-CNT/PMMA composite film shows fast response and change in resistance of the order of 10(2)-10(3) due to its surface modification.
引用
收藏
页码：1045 / 1049
页数：5
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