| Autor: |
Lionel C. Gontard, Rafal E. Dunin-Borkowski, Mhairi H. Gass, Andrew L. Bleloch, Dogan Ozkaya |
| Předmět: |
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| Zdroj: |
Journal of Electron Microscopy; Jun2009, Vol. 58 Issue 3, p167-167, 1p |
| Abstrakt: |
Small particles with face-centred cubic structures can have non-single-crystallographic shapes. Here, an approach based on annular dark-field scanning transmission electron microscopy (STEM) is used to obtain information about the crystal sub-units that make up supported and unsupported twinned Pt, Pt alloy and Au nanoparticles. The three-dimensional shapes of two types of lamellar-twinned particles (LTPs) of Pt are obtained using high-angle annular dark-field STEM. Possible growth mechanisms of the LTPs and origins for the contrast features in the recorded images are discussed. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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