Abstract
Small colloidal particles of platinum have been produced with and without a protective agent (polyvinylpyrrolidone), and have been studied by high resolution electron microscopy. Initially, the protected particles have been found to be single crystals in the size range 5-30 Å. After continued beam exposure, the protective coating's effect is lost and the particles coalesce, forming both larger single crystals and multiply-twinned crystals. In contrast, a sample of the unprotected particles shows extensive initial linking and twinning, but no further beam-induced agglomeration.
Original language | English (US) |
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Pages (from-to) | 15-20 |
Number of pages | 6 |
Journal | Ultramicroscopy |
Volume | 20 |
Issue number | 1-2 |
DOIs | |
State | Published - 1986 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Instrumentation