Electrically refreshable carbon-nanotube-based gas sensors

被引：60

作者：

Chang, Young Wook

Oh, Je Seung

Yoo, Seung Hwan

Choi, Hyang Hee

Yoo, Kyung-Hwa ^{[1
]}

机构：

[1] Yonsei Univ, Dept Phys, Seoul 120749, South Korea

[2] Yonsei Univ, Nanomed Natl Core Res Ctr, Seoul 120749, South Korea

来源：

NANOTECHNOLOGY | 2007年 / 18卷 / 43期

关键词：

D O I：

10.1088/0957-4484/18/43/435504

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We report electrically refreshable carbon- nanotube ( CNT)- based gas sensors with a field effect transistor ( FET) structure. The sensors can be refreshed by applying a negative gate voltage pulse in NO2 and a positive gate voltage pulse in NH3. Furthermore, the temporal response of the conductance to the gate voltage pulse is observed to be dependent on the gas species, but independent of gas concentration. These results show the possibility of distinguishing gas species using CNT- FET sensors.

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页数：4

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