Ordered Arrays of Be-Encapsulated Si Nanotubes on Si(111) Surface

Abstract

Using submonolayer Be deposition onto the Si(111) 7 × 7 surface under ultrahigh vacuum conditions, highly ordered honeycomb-like nanostructure arrays have been obtained. Scanning tunneling microscopy analysis of the nanostructure building blocks has revealed that they have composition, size, and properties similar to those theoretically predicted for the short Be-encapsulated Si nanotubes.