Effect of the local morphology in the field emission properties of conducting polymer surfaces

Detalhes bibliográficos
Autor(a) principal: Assis, Thiago Albuquerque de
Data de Publicação: 2013
Outros Autores: Benito, Rosa M., Losada, J. C., Andrade, Roberto Fernandes Silva, Miranda, José Garcia Vivas, Souza, Nara C. de, Castilho, Caio Mário Castro de, Mota, F. de B., Borondo, F.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://repositorio.ufba.br/ri/handle/ri/15849
Resumo: Texto completo: acesso restrito. p. 1-9
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spelling Assis, Thiago Albuquerque deBenito, Rosa M.Losada, J. C.Andrade, Roberto Fernandes SilvaMiranda, José Garcia VivasSouza, Nara C. deCastilho, Caio Mário Castro deMota, F. de B.Borondo, F.Assis, Thiago Albuquerque deBenito, Rosa M.Losada, J. C.Andrade, Roberto Fernandes SilvaMiranda, José Garcia VivasSouza, Nara C. deCastilho, Caio Mário Castro deMota, F. de B.Borondo, F.2014-09-08T21:03:19Z20130953-8984http://repositorio.ufba.br/ri/handle/ri/15849v. 25, n. 28Texto completo: acesso restrito. p. 1-9In this work, we present systematic theoretical evidence of a relationship between the point local roughness exponent (PLRE) (which quantifies the heterogeneity of an irregular surface) and the cold field emission properties (indicated by the local current density and the macroscopic current density) of real polyaniline (PANI) surfaces, considered nowadays as very good candidates in the design of field emission devices. The latter are obtained from atomic force microscopy data. The electric field and potential are calculated in a region bounded by the rough PANI surface and a distant plane, both boundaries held at distinct potential values. We numerically solve Laplace's equation subject to appropriate Dirichlet's condition. Our results show that local roughness reveals the presence of specific sharp emitting spots with a smooth geometry, which are the main ones responsible (but not the only) for the emission efficiency of such surfaces for larger deposition times. Moreover, we have found, with a proper choice of a scale interval encompassing the experimentally measurable average grain length, a highly structured dependence of local current density on PLRE, considering different ticks of PANI surfaces.Submitted by Suelen Reis (suziy.ellen@gmail.com) on 2014-05-15T14:17:45Z No. of bitstreams: 1 0953-8984_25_28_285106.pdf: 1243512 bytes, checksum: 6df6c734ce1536978c6b4f16757c2e81 (MD5)Approved for entry into archive by Alda Lima da Silva (sivalda@ufba.br) on 2014-09-08T21:03:19Z (GMT) No. of bitstreams: 1 0953-8984_25_28_285106.pdf: 1243512 bytes, checksum: 6df6c734ce1536978c6b4f16757c2e81 (MD5)Made available in DSpace on 2014-09-08T21:03:19Z (GMT). No. of bitstreams: 1 0953-8984_25_28_285106.pdf: 1243512 bytes, checksum: 6df6c734ce1536978c6b4f16757c2e81 (MD5) Previous issue date: 2013http://dx.doi.org/10.1088/0953-8984/25/28/285106reponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAEffect of the local morphology in the field emission properties of conducting polymer surfacesJournal of Physics: Condensed Matterinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10000-01-01info:eu-repo/semantics/openAccessengORIGINAL0953-8984_25_28_285106.pdf0953-8984_25_28_285106.pdfapplication/pdf1243512https://repositorio.ufba.br/bitstream/ri/15849/1/0953-8984_25_28_285106.pdf6df6c734ce1536978c6b4f16757c2e81MD51LICENSElicense.txtlicense.txttext/plain1345https://repositorio.ufba.br/bitstream/ri/15849/2/license.txt0d4b811ef71182510d2015daa7c8a900MD52TEXT0953-8984_25_28_285106.pdf.txt0953-8984_25_28_285106.pdf.txtExtracted texttext/plain38393https://repositorio.ufba.br/bitstream/ri/15849/3/0953-8984_25_28_285106.pdf.txt395b4930be9a27b9ef26860eac321ba7MD53ri/158492022-07-05 14:03:49.146oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-07-05T17:03:49Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false
dc.title.pt_BR.fl_str_mv Effect of the local morphology in the field emission properties of conducting polymer surfaces
dc.title.alternative.pt_BR.fl_str_mv Journal of Physics: Condensed Matter
title Effect of the local morphology in the field emission properties of conducting polymer surfaces
spellingShingle Effect of the local morphology in the field emission properties of conducting polymer surfaces
Assis, Thiago Albuquerque de
title_short Effect of the local morphology in the field emission properties of conducting polymer surfaces
title_full Effect of the local morphology in the field emission properties of conducting polymer surfaces
title_fullStr Effect of the local morphology in the field emission properties of conducting polymer surfaces
title_full_unstemmed Effect of the local morphology in the field emission properties of conducting polymer surfaces
title_sort Effect of the local morphology in the field emission properties of conducting polymer surfaces
author Assis, Thiago Albuquerque de
author_facet Assis, Thiago Albuquerque de
Benito, Rosa M.
Losada, J. C.
Andrade, Roberto Fernandes Silva
Miranda, José Garcia Vivas
Souza, Nara C. de
Castilho, Caio Mário Castro de
Mota, F. de B.
Borondo, F.
author_role author
author2 Benito, Rosa M.
Losada, J. C.
Andrade, Roberto Fernandes Silva
Miranda, José Garcia Vivas
Souza, Nara C. de
Castilho, Caio Mário Castro de
Mota, F. de B.
Borondo, F.
author2_role author
author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Assis, Thiago Albuquerque de
Benito, Rosa M.
Losada, J. C.
Andrade, Roberto Fernandes Silva
Miranda, José Garcia Vivas
Souza, Nara C. de
Castilho, Caio Mário Castro de
Mota, F. de B.
Borondo, F.
Assis, Thiago Albuquerque de
Benito, Rosa M.
Losada, J. C.
Andrade, Roberto Fernandes Silva
Miranda, José Garcia Vivas
Souza, Nara C. de
Castilho, Caio Mário Castro de
Mota, F. de B.
Borondo, F.
description Texto completo: acesso restrito. p. 1-9
publishDate 2013
dc.date.issued.fl_str_mv 2013
dc.date.accessioned.fl_str_mv 2014-09-08T21:03:19Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://repositorio.ufba.br/ri/handle/ri/15849
dc.identifier.issn.none.fl_str_mv 0953-8984
dc.identifier.number.pt_BR.fl_str_mv v. 25, n. 28
identifier_str_mv 0953-8984
v. 25, n. 28
url http://repositorio.ufba.br/ri/handle/ri/15849
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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