Progress in use of carbon black-polymer composite vapor detector arrays for land mine detection

被引：10

作者：

Briglin, SM ^{[1
]}

Burl, MC ^{[1
]}

Freund, MS ^{[1
]}

Lewis, NS ^{[1
]}

Matzger, A ^{[1
]}

Ortiz, DN ^{[1
]}

Tokumaru, P ^{[1
]}

机构：

[1] CALTECH, Div Chem & Chem Engn, Noyes Lab, Pasadena, CA 91125 USA

来源：

DETECTION AND REMEDIATION TECHNOLOGIES FOR MINES AND MINELIKE TARGETS V, PTS 1 AND 2 | 2000年 / 4038卷

关键词：

land mine; vapor sensors; DNT; carbon black;

D O I：

10.1117/12.396281

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Thin films of carbon black-organic polymer composites have been deposited across two metallic leads, with swelling-induced resistance changes of the films signaling the presence of vapors. To identify and classify vapors, arrays of such vapor sensing elements have been constructed. Each element contained a different organic polymer as the insulating phase. The differing gas-solid partition coefficients for the various polymers of the detector array produced a pattern of resistance changes that was used to classify vapors and vapor mixtures. The performance of this system towards DNT, the predominant signature in the vapor phase above land mines, has been evaluated in detail, with robust detection demonstrated in the laboratory in less than 5 s in air at DNT levels in the low ppb range.

引用

页码：530 / 538

页数：9

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