Control of magnesium oxide nanowire morphologies by ambient temperature

Kazuki Nagashima, Takeshi Yanagida, Hidekazu Tanaka, Tomoji Kawai

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

Although controlling morphologies of oxide nanowires formed using vapor-liquid-solid (VLS) mechanism is desired in developing functional oxide-nanowire applications, a comprehensive understanding of the key factors affecting oxide-nanowire VLS growth is still lacking. Here, the authors demonstrate the controllability of magnesium oxide nanowire morphologies by varying the ambient temperature and discuss the underlying mechanism. Decreasing the ambient temperature resulted in shorter, tapered, and square-rod shaped nanowires, whereas increasing the ambient temperature allowed fabricating longer and untapered nanowires. The variation of oxide-nanowire morphologies is interpreted in terms of the competition between the VLS growth and the sidewall growth due to the variation of adatom transport.

Original languageEnglish
Article number233103
JournalApplied Physics Letters
Volume90
Issue number23
DOIs
Publication statusPublished - Jun 27 2007
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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