標題: Laser-unzipped carbon nanotube based glucose sensor for separated structure of enzyme modified field effect transistor
作者: Tsai, Wan-Lin
Chien, Yun-Shan
Yang, Po-Yu
Lee, I-Che
Wang, Kuang-Yu
Cheng, Huang-Chung
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
關鍵字: Carbon nanotube thin film;Glucose sensor;Separated enzyme modified field effect transistor
公開日期: 15-十二月-2013
摘要: A glucose sensing film composed of unzipped multiwalled carbon nanotubes (MWCNTs) via continuous-wave laser irradiation is investigated. Some structural defects decorate on MWCNTs after an acid treatment, and the MWCNTs are unzipped into sheet-shaped layers initiated from these defects after the laser irradiation. The laser-irradiated carbon nanotube thin films (CNTFs) possess higher conductance owing to larger contact area, and the side edges of unzipped CNTs could act as sensing sites for hydrogen ions. Thus the laser-irradiated CNTF as a glucose sensing film could achieve a higher sensitivity of 0.302 mV (mg/dl)(-1), equal to 7.55 mV(mg/dl)(-1) per centimeter square, and a larger linearity of 0.9947 than the as-sprayed one. Moreover, the fully low-temperature processes of this work also reveal the potentials for flexible and disposable biosensors. (C) 2013 Published by Elsevier B.V.
URI: http://dx.doi.org/10.1016/j.sna.2013.09.027
http://hdl.handle.net/11536/23413
ISSN: 0924-4247
DOI: 10.1016/j.sna.2013.09.027
期刊: SENSORS AND ACTUATORS A-PHYSICAL
Volume: 204
Issue: 
起始頁: 31
結束頁: 36
顯示於類別:期刊論文


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