• 文献标题:   Flexible glucose sensor using CVD-grown graphene-based field effect transistor
  • 文献类型:   Article
  • 作  者:   KWAK YH, CHOI DS, KIM YN, KIM H, YOON DH, AHN SS, YANG JW, YANG WS, SEO S
  • 作者关键词:   flexible, biosensor, cvdgrown graphene, field effect transistor, glucose, h2o2
  • 出版物名称:   BIOSENSORS BIOELECTRONICS
  • ISSN:   0956-5663 EI 1873-4235
  • 通讯作者地址:   Korea Univ
  • 被引频次:   129
  • DOI:   10.1016/j.bios.2012.04.042
  • 出版年:   2012

▎ 摘  要

A flexible glucose sensor using a CVD-grown graphene-based field-effect-transistor (FEE) is demonstrated. The CVD-grown graphene was functionalized with linker molecules in order to immobilize the enzymes that induce the catalytic response of glucose. Polyethylene terephthalate (PET) was employed as the substrate material to realize a flexible sensor. The fabricated graphene-based FET sensor showed ambipolar transfer characteristics. Through measurements of the Dirac point shift and differential drain-source current, the fabricated FEE sensor could detect glucose levels in the range of 3.3-10.9 mM, which mostly covers the reference range of medical examination or screen test for diabetes diagnostic. This CVD-grown graphene-based FET sensor, which provides excellent fitting to a model curve even when deformed, high resolution, and continuous real-time monitoring, holds great promise, especially for portable, wearable, and implantable glucose level monitoring applications. (C) 2012 Elsevier B.V. All rights reserved.