The structure of small penta-twinned gold particles |
| |
Authors: | Pei-Yu Gao W Kunath H Gleiter K Weiss |
| |
Institution: | 1. Universit?t des Saarland, D-6600, Saarbrücken, Federal Republic of Germany 2. Fritz-Haber-Institut der MPG, D-1000, Berlin 33, Germany
|
| |
Abstract: | The structural feathers of penta-twinned gold particles (size between 2 and 6 nm) generated by gas evaporation have been investigated by high resolution TEM. The structural characteristic of penta-twinned particles is different from that of quasi-crystals that the five coherent or incoherent twin boundaries separating the twin oriented segments do not join up along a common edge. The lattice parameter is reduced by 4–5% in comparison to that of bulk gold. The formation of the penta-twinned particles is proposed to occur by particle collision. The particles were observed to be crystalline at ambient temperature. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|