• Title/Summary/Keyword: Biosenor

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Development of Glucose Biosensor Using Sol-Gel Reaction of Tetraethoxysilane (Tetraethoxysilane의 졸-겔 반응을 이용한 전기화학적 glucose biosenor 개발)

  • Chang, Seong-Cheol;Park, Deog-Su
    • Journal of Sensor Science and Technology
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    • v.21 no.4
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    • pp.311-317
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    • 2012
  • Disposable amperometric screen-printed biosensor strips have been fabricated by a sol-gel encapsulation for the analysis of glucose. The glucose oxidase(GOx) is entrapped in the gel matrix through sol-gel transition of tetraethoxysliane(TEOS). The biosensor is fabricated by GOx containing thin film of TEOS gel on the surface of screen-printed carbon electrode(SPCE). The GOx-containing thin film of TEOS gel offers a one-step modification process on the surface of SPCE. The optimum conditions for glucose determination have been characterized with respect to the applied potential, enzyme loading ratio, and pH. The linear range and detection limit of glucose detection were from 2.0 mM to 16.0 mM and 0.25 mM, respectively.

Structural and Electrical Properties of Nanotube as Various Second Anodizing Time for Biosensor (바이오 센서로의 응용을 위한 2차 양극산화 시간에 따른 나노튜브의 구조적, 전기적 특성)

  • Kim, Yong-Jun;Lee, Tae-Ho;Jung, Hye-Rin;Lee, Sung-Gap
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.26 no.10
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    • pp.741-744
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    • 2013
  • In this study, we fabricated anodic aluminum oxide (AAO) membrane by two step anodizing process for pH detection. The structural properties were observed by X-ray diffraction (XRD) and field emission scanning electron microscope (FE-SEM). Electrochemical measurements of the pH sensor have been performed in capacitance-voltage (C-V) and drift rates. The characterization of AAO membrane exhibited high sensitivity (99.1 mV/pH) at second anodizing time of 4 min.