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• #### Defects in Hard-Sphere Colloidal Crystals ﻿

(2013-03-15)
Colloidal crystals of $1.55 \mu m$ diameter silica particles were grown on {100} and flat templates by sedimentation and centrifugation. The particles interact as hard spheres. The vacancies and divacancies in these ...
• #### Effect of Pressure on Arsenic Diffusion in Germanium: Evidence Against Simple Vacancy Mechanism ﻿

(Trans Tech Publications, 1997)
We have measured the effect of pressure on As diffusion in Ge. Diffusion anneals on ion-implanted samples were carried out in a high temperature diamond anvil cell using fluid argon as a clean, hydrostatic pressure medium. ...