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A Novel Method for Fabricating Graphene Sensors in Channel for Biomedical Applications

Vashishth, Prabhat and Sen, Prosenjit (2018) A Novel Method for Fabricating Graphene Sensors in Channel for Biomedical Applications. In: 13th Annual IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2018, 22-26 April, 2018, Singapore, pp. 405-408.

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Official URL: https://dx.doi.org/10.1109/NEMS.2018.8556941

Abstract

Graphene is a 2D material possessing extraordinary electrical, mechanical and optical properties which paves way for biomedical applications. A well-known method to fabricate graphene-based devices is depositing graphene using chemical vapor deposition and transferring it to any substrate using polymer support like PMMA (Polymethyl methacrylate) or PDMS (Polydimethylsiloxane). In this process multiple wetting and drying steps are required which compromises the quality of graphene. Also, PMMA leaves residues that are difficult to remove. Here, we report a novel method to fabricate graphene sensors inside PDMS channels. In this method graphene/copper stack is bonded on a PDMS surface using mechanical pressure and temperature. This PDMS layer is then bonded to another PDMS substrate containing microchannel. Etchant is flown through the microchannel to etch the copper and obtain graphene on PDMS. The graphene obtained on PDMS is characterized using optical images, scanning electron microscopy and Raman spectroscopy. This is an easy, simple to use and scalable method to obtain graphene sensors inside microchannels for biomedical applications.

Item Type: Conference Paper
Additional Information: 13th Annual IEEE International Conference on Nano/Micro Engineered and Molecular Systems (IEEE-NEMS), Singapore, SINGAPORE, APR 22-26, 2018
Department/Centre: Division of Interdisciplinary Research > Centre for Nano Science and Engineering
Depositing User: R.S. Ranganayaki
Date Deposited: 20 Jun 2019 18:22
Last Modified: 20 Jun 2019 18:22
URI: http://eprints.iisc.ac.in/id/eprint/62818

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