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Use este identificador para citar ou linkar para este item: https://repositorio.ufba.br/handle/ri/13878
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Campo DCValorIdioma
dc.contributor.authorAssis, Thiago Albuquerque de-
dc.contributor.authorBorondo, F.-
dc.contributor.authorBenito, Rosa M.-
dc.contributor.authorAndrade, Roberto Fernandes Silva-
dc.creatorAssis, Thiago Albuquerque de-
dc.creatorBorondo, F.-
dc.creatorBenito, Rosa M.-
dc.creatorAndrade, Roberto Fernandes Silva-
dc.date.accessioned2013-11-26T12:48:05Z-
dc.date.available2013-11-26T12:48:05Z-
dc.date.issued2008-
dc.identifier.issn1098-0121-
dc.identifier.urihttp://repositorio.ufba.br/ri/handle/ri/13878-
dc.descriptionp. 1-7pt_BR
dc.description.abstractThe density of emission current by a rough surface with fractal structure is analyzed. A possible experimental setup is modeled by an irregular emitting surface, iteratively generated by a fractional Brownian motion (FBM) algorithm with roughness (or Hurst) exponent H=0.3 and a far away plane representing the anode. The boundaries are held at a fixed potential difference and the Laplace’s equation, with lateral periodic conditions, was numerically solved. The solution for the potential leads to the evaluation of the local field and, subsequently, the current density evaluated by using the Fowler-Nordheim’s approach. The results hint at a strong local dependence of the electric field with small variations in the roughness of the irregular boundary. The value of the turn-on electric field is found to be ∼8×106 V/cm. Finally, Fowler-plot curves make possible to discuss the connection between the field amplification factor and geometric properties of the emitter surfaces.pt_BR
dc.language.isoenpt_BR
dc.rightsAcesso Abertopt_BR
dc.sourcehttp://dx.doi.org/10.1103/PhysRevB.78.235427pt_BR
dc.titleField emission properties of fractal surfacespt_BR
dc.title.alternativePhysical Review Bpt_BR
dc.typeArtigo de Periódicopt_BR
dc.identifier.numberv. 78, n. 23pt_BR
dc.publisher.countryBrasilpt_BR
Aparece nas coleções:Artigo Publicado em Periódico (FIS)

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