In situ HREM observation of crystalline-to-gas transition in nanometer-sized Ag particles

J. G. Lee, Joonho Lee, T. Tanaka, H. Mori

Research output: Contribution to journalArticle

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Abstract

Sublimation of silver atoms from a nanometer-sized silver particle, namely, the crystalline-to-gas transition, has been directly observed by high resolution electron microscopy. Remarkable sublimation of silver atoms took place at 950 K from an approximately 9-nm-sized crystalline silver particle on the graphite substrate. The sublimation continued until the whole silver particle disappeared. No melting of the particle occurred during this process. The height-to-width ratio of a nanometer-sized silver particle on graphite at 950 K was about 0.65, and the ratio did not change so much during the sublimation-induced shrinkage of the particle.

Original languageEnglish
Article number075504
JournalPhysical Review Letters
Volume96
Issue number7
DOIs
Publication statusPublished - 2006

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silver
sublimation
gases
graphite
shrinkage
atoms
electron microscopy
melting
high resolution

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

In situ HREM observation of crystalline-to-gas transition in nanometer-sized Ag particles. / Lee, J. G.; Lee, Joonho; Tanaka, T.; Mori, H.

In: Physical Review Letters, Vol. 96, No. 7, 075504, 2006.

Research output: Contribution to journalArticle

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AB - Sublimation of silver atoms from a nanometer-sized silver particle, namely, the crystalline-to-gas transition, has been directly observed by high resolution electron microscopy. Remarkable sublimation of silver atoms took place at 950 K from an approximately 9-nm-sized crystalline silver particle on the graphite substrate. The sublimation continued until the whole silver particle disappeared. No melting of the particle occurred during this process. The height-to-width ratio of a nanometer-sized silver particle on graphite at 950 K was about 0.65, and the ratio did not change so much during the sublimation-induced shrinkage of the particle.

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