NDLI: Highly sensitive bilayer structured graphene sensor

Content Provider	IEEE Xplore Digital Library
Author	Rao, F.B. Almumen, H. Dong, L.X. Li, W.
Copyright Year	2011
Description	Author affiliation: Electrical & Computer Engineering, Michigan State University, East Lansing, 48824, USA (Rao, F.B.; Almumen, H.; Dong, L.X.; Li, W.)
Abstract	This paper presents a nanosensor with an “inter-sheet” configuration formed by making electrical contacts on different atomic sheets of a bilayer structured graphene to expose the inter-sheet effects. An oxygen plasma etching (OPE) technique is developed to tailor the shape and number of layers of a graphene flake. Both “intra-sheet” and “inter-sheet” structured graphene sensors on either separated graphenes or a same graphene were fabricated and tested as ethanol molecule sensors. Our sensors exhibit a higher sensitivity than conventional “intra-sheet” structured graphene sensors. The gas sensitivity was demonstrated by the 42.48% and 185.25% relative resistance changes achieved from “inter-sheet” sensors upon exposure to the 0.5% ethanol in nitrogen environment. This is a remarkable enhancement on sensitivity compared with that of “intra-layer” sensors, which had only 7.51% and 22.79% relative resistance changes under the same conditions. This improvement can be attributed to the strong exponential relationship between inter-sheet tunneling current and layer separation.
Starting Page	2738
Ending Page	2741
File Size	1029155
Page Count	4
File Format	PDF
ISBN	9781457701573
e-ISBN	9781457701566
DOI	10.1109/TRANSDUCERS.2011.5969828
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-05
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Ethanol Resistance Nitrogen Sensitivity Tunneling Electrodes Optical sensors tunneling Bilayer graphene nanosensor inter-sheet effect
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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