Cluster Assembled Metal Encapsulated Thin Nanotubes of Silicon

Abhishek Kumar Singh, Vijay Kumar, Tina M. Briere, Yoshiyuki Kawazoe

Research output: Contribution to journalArticlepeer-review

109 Citations (Scopus)


Using ab initio total energy calculations we demonstrate that the recently found metal encapsulated silicon clusters Si12Be can be assembled to form hexagonal nanotubes of silicon. This is in contrast to undoped silicon structures that are distorted and have a tendency to agglomerate. The finite nanotubes have varying HOMO-LUMO gaps depending upon the length and amount of doping. However, infinite nanotubes are metallic, symmetric, and stable, making metal encapsulation a useful route to generate metallic silicon nanowires for miniature devices.

Original languageEnglish
Pages (from-to)1243-1248
Number of pages6
JournalNano Letters
Issue number11
Publication statusPublished - 2002 Nov


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