title: Mapping Local Quantum Capacitance and Charged Impurities in Graphene via Plasmonic Impedance Imaging.
abstract: Local quantum capacitance of graphene is imaged with plasmonics-based electrical impedance microscopy, from which the local density and polarity of charged impurities, electron and hole puddles associated with the charged impurities, and the density of the impurity states are determined.
authors.affiliation: Center for Bioelectronics and Biosensors, Biodesign Institute, Arizona State University, Tempe, AZ, 85287, USA.
authors.forename: Xiaonan
authors.initials: X
authors.lastname: Shan
authors.affiliation: Center for Bioelectronics and Biosensors, Biodesign Institute, Arizona State University, Tempe, AZ, 85287, USA.
authors.forename: Shan
authors.initials: S
authors.lastname: Chen
authors.affiliation: State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China.
authors.forename: Hui
authors.initials: H
authors.lastname: Wang
authors.affiliation: Center for Bioelectronics and Biosensors, Biodesign Institute, Arizona State University, Tempe, AZ, 85287, USA.
authors.forename: Zixuan
authors.initials: Z
authors.lastname: Chen
authors.affiliation: Center for Bioelectronics and Biosensors, Biodesign Institute, Arizona State University, Tempe, AZ, 85287, USA.
authors.forename: Yan
authors.initials: Y
authors.lastname: Guan
authors.affiliation: Center for Bioelectronics and Biosensors, Biodesign Institute, Arizona State University, Tempe, AZ, 85287, USA.
authors.forename: Yixian
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Center for Bioelectronics and Biosensors, Biodesign Institute, Arizona State University, Tempe, AZ, 85287, USA.
authors.forename: Shaopeng
authors.initials: S
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China.
authors.forename: Hong-Yuan
authors.initials: HY
authors.lastname: Chen
authors.affiliation: Center for Bioelectronics and Biosensors, Biodesign Institute, Arizona State University, Tempe, AZ, 85287, USA.|State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China.
authors.forename: Nongjian
authors.initials: N
authors.lastname: Tao
mesh_terms: D001324:Autoantigens / Q000737:chemistry; D025802:Electric Capacitance; D017097:Electric Impedance; D004583:Electrons; D006108:Graphite / Q000737:chemistry*; D008565:Membrane Proteins / Q000737:chemistry; D008853:Microscopy / Q000379:methods; D008962:Models, Theoretical; D061848:Optical Imaging; D013059:Spectrum Analysis, Raman; D013499:Surface Properties
chemical_list: D001324:Autoantigens; C097741:Golgin subfamily A member 2; D008565:Membrane Proteins; D006108:Graphite
keywords: electron and hole puddles; graphene; plasmonic imaging; quantum capacitance