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Type: Artigo de periódico
Title: Scanning electric potential microscopy imaging of polymers: electrical charge distribution in dielectrics
Author: Galembeck, A
Costa, CAR
da Silva, MCVM
Souza, EF
Galembeck, F
Abstract: Scanning electric potential images of polymer surfaces are presented and compared to standard non-contact AFM images. Samples used were a latex film with a well-known distribution of chemical constituents and thus of ionic electrical charges, as well as finished industrial products. Topography and electric potential images show a variable degree of correlation, thus evidencing the independence of topographic and electrical features of the samples, in the micro- and nanoscopic scales. Domains with non-zero negative or positive electric potentials are observed, extending for a few tenths of a micron and creating an electric mosaic in the otherwise neutral polymers. Large electric potential gradients are observed, e.g. in a HDPE film. (C) 2001 Elsevier Science Ltd. All rights reserved.
Subject: electric potential images
polymer surfaces
micro- and nanoscopic scales
Country: Inglaterra
Editor: Elsevier Sci Ltd
Rights: fechado
Identifier DOI: 10.1016/S0032-3861(00)00921-6
Date Issue: 2001
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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