Direct fabrication of zero-and one-dimensional metal nanocrystals by thermally assisted electromigration

Jong Min Yuk, Kwanpyo Kim, Zonghoon Lee, Masashi Watanabe, A. Zettl, Tae Whan Kim, Young Soo No, Won Kook Choi, Jeong Yong Lee

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


Zero-and one-dimensional metal nanocrystals were successfully fabricated with accurate control in size, shape, and position on semiconductor surfaces by using a novel in situ fabrication method of the nanocrystal with a biasing tungsten tip in transmission electron microscopy. The dominant mechanism of nanocrystal formation was identified mainly as local Joule heating-assisted electromigration through the direct observation of formation and growth processes of the nanocrystal. This method was applied to extracting metal atoms with an exceedingly faster growth rate (∼105 atoms/s) from a metal-oxide thin film to form a metal nanocrystal with any desired size and position. By real-time observation of the microstructure and concurrent electrical measurements, it was found that the nanostructure formation can be completely controlled into various shapes such as zero-dimensional nanodots and one-dimensional nanowires/nanorods.

Original languageEnglish
Pages (from-to)2999-3004
Number of pages6
JournalACS Nano
Issue number6
Publication statusPublished - 2010 Jun 22

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • General Engineering
  • General Physics and Astronomy


Dive into the research topics of 'Direct fabrication of zero-and one-dimensional metal nanocrystals by thermally assisted electromigration'. Together they form a unique fingerprint.

Cite this