Microdiffraction and surface structure of small gold particles

V. Castaño; A. Gómez; M. José Yacaman

doi:10.1016/0167-2584(84)90756-4

Microdiffraction and surface structure of small gold particles

V. Castaño
, A. Gómez
, M. José Yacaman

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

STEM microdiffraction studies from small gold particles grown by vacuum evaporation onto KCl are reported. The patterns show kinematically forbidden spots which are sometimes as intense as the normal fcc spots. Particles with well defined shapes and wedges were studied by weak beam dark field techniques. Computer simulated patterns indicate that wedge-shaped crystals with surface vacancies and kinks produce forbidden reflections with intensities which are in agreement with the experimental observations. It is concluded that the forbidden spots are due to a combination of shape effects and surface roughness of the particles. Therefore microdiffraction patterns from individual particles can be used to evaluate surface roughness.

Original language	English (US)
Pages (from-to)	L587-L592
Journal	Surface Science Letters
Volume	146
Issue number	2-3
DOIs	https://doi.org/10.1016/0167-2584(84)90756-4
State	Published - Nov 1 1984
Externally published	Yes

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title = "Microdiffraction and surface structure of small gold particles",

abstract = "STEM microdiffraction studies from small gold particles grown by vacuum evaporation onto KCl are reported. The patterns show kinematically forbidden spots which are sometimes as intense as the normal fcc spots. Particles with well defined shapes and wedges were studied by weak beam dark field techniques. Computer simulated patterns indicate that wedge-shaped crystals with surface vacancies and kinks produce forbidden reflections with intensities which are in agreement with the experimental observations. It is concluded that the forbidden spots are due to a combination of shape effects and surface roughness of the particles. Therefore microdiffraction patterns from individual particles can be used to evaluate surface roughness.",

author = "V. Casta{\~n}o and A. G{\'o}mez and Yacaman, \{M. Jos{\'e}\}",

year = "1984",

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T1 - Microdiffraction and surface structure of small gold particles

AU - Castaño, V.

AU - Gómez, A.

AU - Yacaman, M. José

PY - 1984/11/1

Y1 - 1984/11/1

N2 - STEM microdiffraction studies from small gold particles grown by vacuum evaporation onto KCl are reported. The patterns show kinematically forbidden spots which are sometimes as intense as the normal fcc spots. Particles with well defined shapes and wedges were studied by weak beam dark field techniques. Computer simulated patterns indicate that wedge-shaped crystals with surface vacancies and kinks produce forbidden reflections with intensities which are in agreement with the experimental observations. It is concluded that the forbidden spots are due to a combination of shape effects and surface roughness of the particles. Therefore microdiffraction patterns from individual particles can be used to evaluate surface roughness.

AB - STEM microdiffraction studies from small gold particles grown by vacuum evaporation onto KCl are reported. The patterns show kinematically forbidden spots which are sometimes as intense as the normal fcc spots. Particles with well defined shapes and wedges were studied by weak beam dark field techniques. Computer simulated patterns indicate that wedge-shaped crystals with surface vacancies and kinks produce forbidden reflections with intensities which are in agreement with the experimental observations. It is concluded that the forbidden spots are due to a combination of shape effects and surface roughness of the particles. Therefore microdiffraction patterns from individual particles can be used to evaluate surface roughness.

UR - https://www.scopus.com/pages/publications/18144381734

UR - https://www.scopus.com/pages/publications/18144381734#tab=citedBy

U2 - 10.1016/0167-2584(84)90756-4

DO - 10.1016/0167-2584(84)90756-4

M3 - Article

AN - SCOPUS:18144381734

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VL - 146

SP - L587-L592

JO - Surface Science Letters

JF - Surface Science Letters

IS - 2-3

ER -

Microdiffraction and surface structure of small gold particles

Abstract

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