TY - JOUR
T1 - Direct atomic imaging of solid surfaces. III. Small particles and extended au surfaces
AU - Smith, David J.
AU - Marks, L. D.
N1 - Funding Information:
This work has been supported by SERC, UK, and L.D.M. also acknowledges support of Department of Energy (US) Grant No. DE-ACOL-76ER02995.
PY - 1985
Y1 - 1985
N2 - Atomic-resolution micrographs of small metal particles and extended gold surfaces are presented which demonstrate that detailed surface morphology, including mono-atomic steps and facetting, can be imaged directly in profile. Recent results are briefly reviewed, and further observations are described which concentrate upon dynamic changes in the surface structure. Following electron-beam-induced etching of the carbonaceous surface layer in the presence of water vapour, considerable macroscopic and microscopic rearrangements of the extended films, including surface diffusion, occur. Images recorded in a [011] projection indicate that the (111) surface expands outwards, developing a hill-and-valley morphology, and surface dislocations are seen. The (110) and (100) surfaces were generally microscopically rough with surface partial dislocations again visible on the latter. The presence of surface steps, particularly on (100), was found to have a marked effect on the overall direction of surface diffusion.
AB - Atomic-resolution micrographs of small metal particles and extended gold surfaces are presented which demonstrate that detailed surface morphology, including mono-atomic steps and facetting, can be imaged directly in profile. Recent results are briefly reviewed, and further observations are described which concentrate upon dynamic changes in the surface structure. Following electron-beam-induced etching of the carbonaceous surface layer in the presence of water vapour, considerable macroscopic and microscopic rearrangements of the extended films, including surface diffusion, occur. Images recorded in a [011] projection indicate that the (111) surface expands outwards, developing a hill-and-valley morphology, and surface dislocations are seen. The (110) and (100) surfaces were generally microscopically rough with surface partial dislocations again visible on the latter. The presence of surface steps, particularly on (100), was found to have a marked effect on the overall direction of surface diffusion.
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U2 - 10.1016/S0304-3991(85)80013-9
DO - 10.1016/S0304-3991(85)80013-9
M3 - Article
AN - SCOPUS:0021785914
SN - 0304-3991
VL - 16
SP - 101
EP - 113
JO - Ultramicroscopy
JF - Ultramicroscopy
IS - 1
ER -