Surface energy modification by electron beam

We observe a pronounced variation of wettability properties in solid state materials induced by a low-energy electron beam. The phenomenon occurs in several stages characterized by various mechanisms. We show that for low electron doses the irradiation leads to decrease in the wetting of a dielectri...

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Veröffentlicht in:Surface science 2007-11, Vol.601 (21), p.5042-5049
Hauptverfasser: Aronov, Daniel, Rosenman, Gil
Format: Artikel
Sprache:eng
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Zusammenfassung:We observe a pronounced variation of wettability properties in solid state materials induced by a low-energy electron beam. The phenomenon occurs in several stages characterized by various mechanisms. We show that for low electron doses the irradiation leads to decrease in the wetting of a dielectric surface due to induced surface electric potential. The higher electron charge leads to formation of a chemical monolayer on material’s surface. It has been found that the electron irradiation strongly modifies the surface free energy of SiO 2 by decreasing its total surface free energy value, almost twice. However, electron-induced variations of dispersive and polar components of the surface free energy are quite different and depend of incident electron charge.
ISSN:0039-6028
1879-2758
DOI:10.1016/j.susc.2007.09.003