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Title: Self-assembly of colloidal spheres on patterned substrates

Abstract

We report here on the self-assembly of polystyrene colloidal spheres on patterned substrates. The substrate was a grating with a periodic one-dimensional-height profile. The two-dimensional (2D) arrays of colloidal spheres were obtained by the convective self-assembly method. It is shown that these structures strongly depend on the ratio between the diameter of the sphere (d) and the period of the grating (p) (x=d/p). When 1<x<1.15, and 1.15<x<2, the 2D array showed a centered-rectangular symmetry. For x=1.15 and 2, the ordered 2D array had a hexagonal symmetry structure. The angle between the grating groove direction and the crystal lattice vector ({theta}) is given by {theta}=sin{sup -1}(d/p). It is suggested that the variety of the 2D structures are formed by the capillary forces and the self-shadowing effects during the drying process. {copyright} 2001 American Institute of Physics.

Authors:
; ; ; ;
Publication Date:
Sponsoring Org.:
(US)
OSTI Identifier:
40230733
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 79; Journal Issue: 6; Other Information: DOI: 10.1063/1.1391234; Othernumber: APPLAB000079000006000872000001; 025132APL; PBD: 6 Aug 2001; Journal ID: ISSN 0003-6951
Publisher:
The American Physical Society
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CRYSTAL LATTICES; DRYING; PHYSICS; POLYSTYRENE; SUBSTRATES; SYMMETRY; VECTORS

Citation Formats

Ye, Y -H, Badilescu, S, Truong, Vo-Van, Rochon, P, and Natansohn, A. Self-assembly of colloidal spheres on patterned substrates. United States: N. p., 2001. Web. doi:10.1063/1.1391234.
Ye, Y -H, Badilescu, S, Truong, Vo-Van, Rochon, P, & Natansohn, A. Self-assembly of colloidal spheres on patterned substrates. United States. doi:10.1063/1.1391234.
Ye, Y -H, Badilescu, S, Truong, Vo-Van, Rochon, P, and Natansohn, A. Mon . "Self-assembly of colloidal spheres on patterned substrates". United States. doi:10.1063/1.1391234.
@article{osti_40230733,
title = {Self-assembly of colloidal spheres on patterned substrates},
author = {Ye, Y -H and Badilescu, S and Truong, Vo-Van and Rochon, P and Natansohn, A},
abstractNote = {We report here on the self-assembly of polystyrene colloidal spheres on patterned substrates. The substrate was a grating with a periodic one-dimensional-height profile. The two-dimensional (2D) arrays of colloidal spheres were obtained by the convective self-assembly method. It is shown that these structures strongly depend on the ratio between the diameter of the sphere (d) and the period of the grating (p) (x=d/p). When 1<x<1.15, and 1.15<x<2, the 2D array showed a centered-rectangular symmetry. For x=1.15 and 2, the ordered 2D array had a hexagonal symmetry structure. The angle between the grating groove direction and the crystal lattice vector ({theta}) is given by {theta}=sin{sup -1}(d/p). It is suggested that the variety of the 2D structures are formed by the capillary forces and the self-shadowing effects during the drying process. {copyright} 2001 American Institute of Physics.},
doi = {10.1063/1.1391234},
journal = {Applied Physics Letters},
issn = {0003-6951},
number = 6,
volume = 79,
place = {United States},
year = {2001},
month = {8}
}