Ordered growth of nanocrystals via a morphological instability

J. J. Eggleston; P. W. Voorhees

doi:10.1063/1.1429757

Ordered growth of nanocrystals via a morphological instability

J. J. Eggleston, P. W. Voorhees

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

52 Scopus citations

Abstract

Nanocrystal formation on patterned substrates during heteroepitaxy is studied. Deposition on a substrate with a mesa induces a qualitatively new morphological instability that is driven solely by capillarity. If the film possesses a lattice parameter misfit with the substrate, this instability then propagates as a traveling wave along the substrate. This traveling wave yields large regions of highly ordered nanocrystals. Strongly anisotropic surface energy greatly increases the growth rate of the instability of a planar film and, thus, decreases the distance over which the traveling wave propagates. Even in this case, however, deposition on a substrate with a periodic arrangement of mesas can yield highly ordered arrays of nanocrystals.

Original language	English (US)
Pages (from-to)	306-308
Number of pages	3
Journal	Applied Physics Letters
Volume	80
Issue number	2
DOIs	https://doi.org/10.1063/1.1429757
State	Published - Jan 14 2002

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Physics and Astronomy (miscellaneous)

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Ordered growth of nanocrystals via a morphological instability

Abstract

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