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Proceedings Paper

Sensors for buried land mines based on guest-host recognition and self-assembly
Author(s): Basil I. Swanson; Jing-Xuan Shi; Sabina R. Johnson; Xiaoguang Yang
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Paper Abstract

Species selective and sensitive films were designed and fabricated for sensing explosives such as TNT. The molecular recognition host reagents were functionalized and covalently attached to a surface acoustic wave (SAW) transducer surface for detecting nitroaromatic species in gas phase. The selectivity and sensitivity of the film are based on host- guest interaction between the host reagent and gas phase species. The film fabrication employs molecular self- assembly technique to construct stable and organized films. The self-assembled monolayer film containing permethylated beta-cyclodextrin can detect o-nitrotoluene at 60 parts per billion. The multilayer films based on covalently attached cyclodextrin polymers can detect o-nitrotoluene at 600 parts per trillion.

Paper Details

Date Published: 15 May 1998
PDF: 7 pages
Proc. SPIE 3270, Methods for Ultrasensitive Detection, (15 May 1998); doi: 10.1117/12.308383
Show Author Affiliations
Basil I. Swanson, Los Alamos National Lab. (United States)
Jing-Xuan Shi, Los Alamos National Lab. (United States)
Sabina R. Johnson, Los Alamos National Lab. (United States)
Xiaoguang Yang, Los Alamos National Lab. (United States)

Published in SPIE Proceedings Vol. 3270:
Methods for Ultrasensitive Detection
Bryan L. Fearey, Editor(s)

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