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Author Taehyun Hwang ♦ Jang Ah Kim
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2014
Language English
Subject Domain (in DDC) Technology ♦ Engineering & allied operations ♦ Applied physics
Subject Keyword Graphene ♦ Sugar ♦ Biosensors ♦ Refractive index ♦ Optical waveguides ♦ Optical device fabrication ♦ Detectors ♦ Layer by layer ♦ Glucos ♦ Waveguide ♦ Graphene
Abstract We described the fabrication of a graphene based bio-chemical sensor integrated with waveguide device. The working principle of the sensor is based on the variation of the local evanescent wave intensity according to the variation of the analyte's refractive index. Graphene film was transferred onto the field-effect transistor device, and an overlay of polydimethylsiloxane (PDMS) was used as the waveguide. A few microliter drop of analyte was placed on the PDMS waveguide, and the change in the photocurrent through the graphene was monitored. Depending on the concentration of the analyte change, the local evanescent field changed and hence the photo current of the graphene changed. Furthermore, we have evaluated the sensor with the modified graphene-photo detector as well as the surface treated waveguide to enhance the selectivity. We believe that this sensing platform can be used for detection of various bio-analytes and for bio reactions.
Description Author affiliation: Adv. Inst. of Nano Technol., Sungkyunkwan Univ., Suwon, South Korea (Jang Ah Kim) || Sch. of Mech. Eng., Sungkyunkwan Univ., Suwon, South Korea (Taehyun Hwang)
ISBN 9781479901623
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research ♦ Reading
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2014-11-02
Publisher Place Spain
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Size (in Bytes) 1.27 MB
Page Count 4
Starting Page 1324
Ending Page 1327


Source: IEEE Xplore Digital Library