Motion of Surface Atoms on Small Gold Particles Revealed by HREM with Real-Time VTR System

Japanese Journal of Applied Physics - Tập 24 Số 2A - Trang L125 - 1985
Sumio Iijima1, Toshinari Ichihashi1
1Research Development Corporation of Japan, c/o Department of Physics, Meijo University

Tóm tắt

A new method of high resolution electron microscopy utilizing a real time VTR-TV monitor system has been developed for the study of small metal particles less than 100 Å in size. The study for the first time revealed the real time motion of the surface atoms on a 100 Å gold cluster. The particle is a cuboctahedron and its {111} and {100} type surface are viewed as their edge-on projections along the <110 > direction. The surface atomic steps are formed on the {100} type surfaces but not on the {111} surfaces. The steps frequently change their positions within less than one tenth of a second. This motion is direct evidence of the random walk of the surface atoms on metal surfaces.

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Tài liệu tham khảo

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1983

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Japanese Journal of Applied Physics

Tập 24 Số 2A

L125

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