Direct creation of microdomains with positive and negative surface potential on hydroxyapatite coatings

T. Plecenik, S. A.M. Tofail, M. Gregor, M. Zahoran, M. Truchly, F. Laffir, T. Roch, P. Durina, M. Vargova, G. Plesch, P. Kus, A. Plecenik

Research output: Contribution to journalArticlepeer-review

Abstract

A method for the direct patterning of electrostatic potential at the surface of hydroxyapatite is presented here. Microdomains of surface potential have been created on hydroxyapatite coatings by a 20 keV focused electron beam with minimal alterations of surface chemistry. The success of such approach has been confirmed by Kelvin probe force microscopy measurements, which show that this method is capable of creating micron sized positive and negative local electrostatic potential. The shape and potential difference of these domains were found to depend on the dose of total injected charge from the electron beam as well as the speed with which such charge is injected.

Original languageEnglish
Article number113701
JournalApplied Physics Letters
Volume98
Issue number11
DOIs
Publication statusPublished - 14 Mar 2011

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