According to the core-shell model nanocrystals consist of a uniform core surrounded by a surface shell. Crystallographic structure of the surface shell is the same as that of the core but interatomic distances in the surface layer are different than those in the center of the crystal. For diamond the surface layer has a slightly expanded structure with longer interatomic distances, and the interior and exterior regions of nanocrystals have noticeable different compressibilities. A higher compressibility is estimated for the surface layers in comparison with the core of the nano-size diamond particles.
Journal: TechConnect Briefs
Volume: 1, Technical Proceedings of the 2006 NSTI Nanotechnology Conference and Trade Show, Volume 1
Published: May 7, 2006
Pages: 823 - 826
Industry sector: Advanced Materials & Manufacturing
Topic: Materials Characterization & Imaging