文化大學機構典藏 CCUR:Item 987654321/2582
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    题名: Humidity sensing and electrical properties of Na- and K-montmorillonite
    作者: Su, Pi-Guey
    Chen, Ching-Yin
    贡献者: 化學系
    关键词: humidity sensor
    montmorillonite
    counterion
    impedance analysis
    sensing properties
    日期: 2008
    上传时间: 2009-11-06 15:10:59 (UTC+8)
    摘要: Cationic clays, Na- and K-montmorillonite, were used to make a humidity sensor. The impedances of the Na- and K-montmorillonite were measured at various humidities and temperatures in a frequency range of 60 Hz-100 kHz. The results indicated that the counterions played a dominant role in conductance mechanism of the montmorillonite films. Moreover, the complex impedance spectra were adopted to elucidate the transport process by counterions in the mechanism for the conductance variation with %RH. For practical use, the K-montmorillonite film was chosen for further studying the other humidity sensing properties such as sensitivity, hysteresis, influences of applied frequency and ambient temperature, response and recovery times, and long-term stability. (C) 2007 Elsevier B.V. All rights reserved.
    關聯: SENSORS AND ACTUATORS B-CHEMICAL Volume: 129 Issue: 1 Pages: 380-385
    显示于类别:[Department of Chemistry & Graduate Institute of Applied Chemistry ] journal articles

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