Thin film evolution: Dewetting dynamics of a bimodal molecular system

被引：23
作者：
Topple, J. M. [1 ]
Burke, S. A. [1 ]
Fostner, S. [1 ]
Gruetter, P. [1 ]
机构：
[1] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada
来源：
PHYSICAL REVIEW B | 2009年 / 79卷 / 20期
关键词：
atomic force microscopy; epitaxial growth; organic compounds; thin films; wetting; PERYLENE TETRACARBOXYLIC DIIMIDE; GROWTH; DIANHYDRIDE; EQUILIBRIUM; DEPOSITION; PENTACENE; SPECTRA; EPITAXY; PTCDA;
D O I：
10.1103/PhysRevB.79.205414
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Deposition of submonolayer coverages of 3,4,9,10-perylenetetracarboxylic diimide onto NaCl(001) results in the bimodal growth of coexisting square and needle-shaped islands. The epitaxy of each island type was determined from molecular and atomic resolution noncontact atomic force microscopy images. Postdeposition, the needle islands grow while the square islands disappear completely within days. This is characterized as a dewetting transition, the dynamics of which has been described and empirically fit to the monomolecular growth model, a model typically applied to biological growth.
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页数：6
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