Temperature-dependent stability of supported five-fold twinned copper nanocrystals.
basic_science · Level V
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- Record sourced from PubMed, PMID 19323548.
- Also identified by DOI 10.1021/nn900059v.
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Abstract
The temperature-dependent structure transition of supported Cu nanocrystals on SrTiO3(001)-(2 x 1) is investigated by scanning tunneling microscopy (STM). We experimentally determine the phase map of supported Cu icosahedral, decahedral, and truncated octahedral nanocrystal shapes as a function of substrate temperature during Cu deposition. We show that a supported nanocrystal of 8500 atoms at a nucleation temperature of 480 degrees C has the same probability of adopting an icosahedral or octahedral shape.