Direct observation of electric field induced surface atomic displacements using the field ion microscope
作者:
H. C. Eaton,
R. J. Bayuzick,
期刊:
Review of Scientific Instruments
(AIP Available online 1984)
卷期:
Volume 55,
issue 4
页码: 547-550
ISSN:0034-6748
年代: 1984
DOI:10.1063/1.1137789
出版商: AIP
数据来源: AIP
摘要:
Numerical calculations are used to determine the magnitude and directions of surface atomic displacements produced by imaging a tungsten specimen in a field ion microscope. These displacements are induced by surface forces resulting from the high electric field required for imaging in the instrument. The computations reveal that the maximum displacements occur in the brightly imaging regions of a tungsten emitter and can be as large as 0.1 nm. A color photographic technique is used to directly reveal the displacements in an actual experiment. The results of theexperiments corroborate those of the calculations.
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