Properties of physisorbed water layers on gold revealed in a FEM study

J. Plšek, P. Hrubý, K. Nikiforov, Z. Knor

Результат исследований: Научные публикации в периодических изданияхстатьярецензирование

14 Цитирования (Scopus)

Аннотация

Field emission study of thin water layers was performed to examine their properties and their changes after application of a high electric field. Comparison of field emission characteristics of water layers adsorbed on clean tungsten and gold-covered tungsten suggested that, whereas water molecules adsorbed on tungsten are oriented by oxygen atoms towards the metal surface, water layer on gold-covered tungsten has amorphous character with no preferential orientation. Both heated and non-heated layers are heavily influenced by applied high electric field strengths (F ≈30 MV/cm). Decrease of the work function and of the voltage needed for a constant emission current during successive increase of the electric field was tentatively interpreted in terms of chemical and morfological changes of the water layer due to the field dissociation and solvation.

Язык оригиналаанглийский
Страницы (с-по)1553-1560
Число страниц8
ЖурналApplied Surface Science
Том252
Номер выпуска5
DOI
СостояниеОпубликовано - 15 дек 2005

Предметные области Scopus

  • Поверхности, слои и пленки

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