Artículos de revistas
Scanning electric potential microscopy imaging of polymers: electrical charge distribution in dielectrics
Registro en:
Polymer. Elsevier Sci Ltd, v. 42, n. 11, n. 4845, n. 4851, 2001.
0032-3861
WOS:000167382100008
10.1016/S0032-3861(00)00921-6
Autor
Galembeck, A
Costa, CAR
da Silva, MCVM
Souza, EF
Galembeck, F
Institución
Resumen
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. 42 11 4845 4851