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    Textile-based Electrochemical Sensing: Effect of Fabric Substrate and Detection of Nitroaromatic Explosives

    Year: 2010

    Journal: Electroanalysis, Volume 22, Issue 21, pages 2511–2518, November 2010, 20111221

    Authors: Min-Chieh Chuang, Joshua Ray Windmiller, Padmanabhan Santhosh, Gabriela Valdés Ramírez, Michal Galik, Tzu-Yang Chou, Joseph Wang

    Organizations: Department of NanoEngineering, University of California, San Diego, La Jolla, CA 92093, USA

    This study examines the influence of textile substrates upon the behavior of wearable screen-printed electrodes and demonstrates the attractive sensing properties of these sensors towards the detection of nitroaromatic explosives. Compared to electrodes printed on common cotton or polyester substrates, GORE-TEX-based electrochemical sensors display reproducible background cyclic voltammograms, reflecting the excellent water-repellant properties of the GORE-TEX fabric. The wetting properties of different printed textile electrodes are elucidated using contact angle measurements. The influence of laundry washing and mechanical stress is explored. The GORE-TEX-based printed electrodes exhibit favorable detection of 2,4-dinitrotoluene (DNT) and 2,4,6-trinitrotoluene (TNT) explosives, including rapid detection of DNT vapor.