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Title:Electrostatic Analysis of Nanoelectromechanical Systems
Author(s):Xu, Yang
Doctoral Committee Chair(s):Aluru, Narayana R.
Department / Program:Electrical and Computer Engineering
Discipline:Electrical and Computer Engineering
Degree Granting Institution:University of Illinois at Urbana-Champaign
Abstract:In addition to the multiscale method, we present an ab initio study of electronic properties of graphene flakes and nanoribbons adsorbed on clean and H-passivated (100) silicon surfaces. The graphene electronic properties are not perturbed by the H-passivated Si substrate. In contrast, the interaction between the clean Si surface and graphene can significantly change the bandstructure of graphene. This is caused by the covalent bonding formed by C and surface Si atoms, which changes the pi-band network of the graphene layer. The dispersion curves and density of states calculations show that the bonded Si-C surface states are highly delocalized and located near the Fermi energy. Adsorption energy indicates that the graphene flakes and nanoribbons are stable on clean Si(100) surfaces.
Issue Date:2009
Description:109 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2009.
Other Identifier(s):(MiAaPQ)AAI3395548
Date Available in IDEALS:2015-09-25
Date Deposited:2009

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