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

doi:10.1021/nn901674p

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

Department of Physics

Research output: Contribution to journal › Article

10 Citations (Scopus)

Abstract

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 language	English
Pages (from-to)	2999-3004
Number of pages	6
Journal	ACS Nano
Volume	4
Issue number	6
DOIs	https://doi.org/10.1021/nn901674p
Publication status	Published - 2010 Jun 22

All Science Journal Classification (ASJC) codes

Materials Science(all)
Engineering(all)
Physics and Astronomy(all)

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Yuk, J. M., Kim, K., Lee, Z., Watanabe, M., Zettl, A., Kim, T. W., No, Y. S., Choi, W. K., & Lee, J. Y. (2010). Direct fabrication of zero-and one-dimensional metal nanocrystals by thermally assisted electromigration. ACS Nano, 4(6), 2999-3004. https://doi.org/10.1021/nn901674p

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abstract = "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.",

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AU - Kim, Kwanpyo

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AU - Watanabe, Masashi

AU - Zettl, A.

AU - Kim, Tae Whan

AU - No, Young Soo

AU - Choi, Won Kook

AU - Lee, Jeong Yong

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