Atomic surface diffusion on Pt nanoparticles quantified by high-resolution transmission electron microscopy.
Micron
; 63: 52-6, 2014 Aug.
Article
de En
| MEDLINE
| ID: mdl-24461627
ABSTRACT
Aberration-corrected high-resolution transmission electron microscopy allows for the delocalization-free observation of atomic motions on metallic surfaces and thus enables measurements of the diffusion of single atoms on the surfaces of nanoscopic objects such as nanoparticles. Using this recently introduced method, the diffusion coefficient for surface self-diffusion of Pt nanoparticles is determined through the fluctuating occupation of the particle's atomic columns. This diffusion coefficient is determined to lie in the range Dâ¼(10(-17)
10(-16)) cm(2)/s.
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Langue:
En
Journal:
Micron
Sujet du journal:
DIAGNOSTICO POR IMAGEM
Année:
2014
Type de document:
Article
Pays d'affiliation:
Allemagne