Detection of trinitrotoluene via deflagration on a microcantilever

被引：62

作者：

Pinnaduwage, LA ^{[1
]}

Wig, A

Hedden, DL

Gehl, A

Yi, D

Thundat, T

Lareau, RT

机构：

[1] Oak Ridge Natl Lab, Div Life Sci, Oak Ridge, TN 37831 USA

[2] Univ Tennessee, Dept Phys, Knoxville, TN 37966 USA

[3] Oak Ridge Natl Lab, Div Life Sci, Oak Ridge, TN 37831 USA

[4] Transportat Secur Adm, US Dept Homeland Secur, Atlantic City, NJ 08405 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2004年 / 95卷 / 10期

关键词：

D O I：

10.1063/1.1697619

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We describe in detail the detection of deflagration of trinitrotoluene (TNT) deposited on a piezoresistive microcantilever and point out its possible use for explosive-vapor detection. The deflagration of TNT causes the cantilever to bend (due to released heat) and its resonance frequency to shift (due to mass unloading). Explosive vapors provide unique responses that are absent for "interferences" such as water or alcohol vapors. The proposed sensor makes possible a sensitive, miniature explosives detection device that may be deployed in large numbers. The minimum amount of TNT detected on the cantilever depends on the cantilever dimensions and was approximate to50 pg for the batch of cantilevers used. (C) 2004 American Institute of Physics.

引用

页码：5871 / 5875

页数：5

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