Measuring quantum conductance and capacitance of graphene using impedance-derived capacitance spectroscopy

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorLopes, Laís C.-
Autor(es): dc.creatorSantos, Adriano-
Autor(es): dc.creatorBueno, Paulo R.-
Data de aceite: dc.date.accessioned2025-08-21T16:29:57Z-
Data de disponibilização: dc.date.available2025-08-21T16:29:57Z-
Data de envio: dc.date.issued2022-05-01-
Data de envio: dc.date.issued2022-05-01-
Data de envio: dc.date.issued2021-10-29-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.carbon.2021.08.055-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/233199-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/233199-
Descrição: dc.descriptionHere, we demonstrate that impedance-derived capacitance spectroscopy is a useful method for measuring and analyzing the quantum of conductance and capacitance of a single-layer graphene sheet. Both quantum conductance and capacitance exhibit the expected traditional V-shape when measured as a function of bias potential (with the minima of both parameters being at the Dirac point) in a 1-Butyl-3-methylimidazolium tetrafluoroborate ionic liquid environment. Measurements were conducted at a specific low-frequency limit in which the conductance and capacitance were scanned as a function of bias potential to attain the quantum conductive and capacitive V-shapes. The V-shapes agree in terms of magnitude and profile with those reported in the literature using different methodologies and/or techniques. This validates impedance-derived capacitance spectroscopy as a suitable method to acquire key information of graphene and its derivatives. This method represents an alternative for rapid construction of both conductive and capacitive V-shapes of graphene in a single, simple experimental run.-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionInstitute of Chemistry São Paulo State University (UNESP), CEP. 14.800-060-
Descrição: dc.descriptionInstitute of Chemistry São Paulo State University (UNESP), CEP. 14.800-060-
Descrição: dc.descriptionFAPESP: 2017–248390-
Descrição: dc.descriptionFAPESP: 2018/23577–5-
Descrição: dc.descriptionCAPES: 88887.463447/2019–00-
Formato: dc.format821-827-
Idioma: dc.languageen-
Relação: dc.relationCarbon-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectGraphene-
Palavras-chave: dc.subjectImpedance spectroscopy-
Palavras-chave: dc.subjectNanoscale electrochemistry-
Palavras-chave: dc.subjectQuantum capacitance-
Palavras-chave: dc.subjectQuantum conductance-
Título: dc.titleMeasuring quantum conductance and capacitance of graphene using impedance-derived capacitance spectroscopy-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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