Conductance modulation of charged lipid bilayer using electrolyte-gated graphene-field effect transistor

Graphene is an attention-grabbing material in electronics, physics, chemistry, and even biology because of its unique properties such as high surface-area-to-volume ratio. Also, the ability of graphene-based materials to continuously tune charge carriers from holes to electrons makes them promising...

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Bibliographic Details
Published in:	Nanoscale research letters Vol. 9; no. 1; p. 371
Main Authors:	Kiani, Mohammad Javad, Harun, Fauzan Khairi Che, Ahmadi, Mohammad Taghi, Rahmani, Meisam, Saeidmanesh, Mahdi, Zare, Moslem
Format:	Journal Article
Language:	English
Published:	New York Springer New York 30-07-2014 BioMed Central Ltd Springer
Subjects:	Chemistry and Materials Science Materials Science Molecular Medicine Nano Idea Nanochemistry Nanoscale Science and Technology Nanotechnology Nanotechnology and Microengineering Lipid bilayer Conductance modulation Monolayer graphene Electric charge
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Summary:	Graphene is an attention-grabbing material in electronics, physics, chemistry, and even biology because of its unique properties such as high surface-area-to-volume ratio. Also, the ability of graphene-based materials to continuously tune charge carriers from holes to electrons makes them promising for biological applications, especially in lipid bilayer-based sensors. Furthermore, changes in charged lipid membrane properties can be electrically detected by a graphene-based electrolyte-gated graphene field effect transistor (GFET). In this paper, a monolayer graphene-based GFET with a focus on the conductance variation caused by membrane electric charges and thickness is studied. Monolayer graphene conductance as an electrical detection platform is suggested for neutral, negative, and positive electric-charged membrane. The electric charge and thickness of the lipid bilayer ( Q LP and L LP ) as a function of carrier density are proposed, and the control parameters are defined. Finally, the proposed analytical model is compared with experimental data which indicates good overall agreement.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1931-7573 1556-276X 1556-276X
DOI:	10.1186/1556-276X-9-371