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À propos de : Three-dimensional shapes and structures of lamellar-twinned fcc nanoparticles using ADF STEM        

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  • Three-dimensional shapes and structures of lamellar-twinned fcc nanoparticles using ADF STEM
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Abstract
  • 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.
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  • dfp003
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  • JOURNAL OF ELECTRON MICROSCOPY
  • Lionel C. Gontard et al. 3D shapes and structures of twinned nanoparticles
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