Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Properties of physisorbed water layers on gold revealed in a FEM study. / Plšek, J.; Hrubý, P.; Nikiforov, K.; Knor, Z.
в: Applied Surface Science, Том 252, № 5, 15.12.2005, стр. 1553-1560.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
}
TY - JOUR
T1 - Properties of physisorbed water layers on gold revealed in a FEM study
AU - Plšek, J.
AU - Hrubý, P.
AU - Nikiforov, K.
AU - Knor, Z.
PY - 2005/12/15
Y1 - 2005/12/15
N2 - 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.
AB - 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.
KW - Field emission microscopy
KW - Water adsorption
KW - Work function
UR - http://www.scopus.com/inward/record.url?scp=27944511507&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2005.02.133
DO - 10.1016/j.apsusc.2005.02.133
M3 - Article
AN - SCOPUS:27944511507
VL - 252
SP - 1553
EP - 1560
JO - Applied Surface Science
JF - Applied Surface Science
SN - 0169-4332
IS - 5
ER -
ID: 36429691