The Size Effect on Solidification in Eutectic Bismuth-Tin (Bi-Sn) Nanowires by In-Situ Annealing Processes

Shih Hsun Chen, Chiu Yen Wang, Lih-Juann Chen, Tzeng-Feng Liu, Chuen-Guang Chao

Research output: Contribution to journalArticle

Abstract

The size effects on solidification and the formation mechanism of the segmented eutectic Bi-43Sn nanowires during in situ annealing have been investigated. A directional solidification along the wire axis limits the segmented eutectic nanowire to arrange axially during the in situ annealing processes due to directional solidification. In 70 nm nanowires, the small size confines the convection in liquid, which results in differences in the microstructure and composition profiles between 70 and 200 nm nanowires. In the vacuum hydraulic pressure injection process, the directional cooling helps the formation of single crystal, and the isotropic solidification leads to polycrystalline microstructure.
Original languageEnglish
Pages (from-to)6324-6331
Number of pages8
JournalJournal of Nanoscience and Nanotechnology
Volume10
Issue number10
DOIs
StatePublished - Oct 2010

Keywords

  • Size Effect
  • Eutectic Nanowires
  • solidification
  • Convection
  • LEAD SULFIDE NANOCRYSTALS
  • PRESSURE INJECTION
  • GROWTH
  • FABRICATION
  • template
  • Devices
  • OXYGEN
  • Alumina
  • System

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