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Assembly of polymer microspheres and the thin-film Micropatterning

Published online by Cambridge University Press:  10 February 2011

H. Du ,
X. M. Qian ,
W. M. Li ,
F. Q. Liu ,
J. Tang ,
X. Y. Tang ,
Y. B. Bai  and
T. J. Li
H. Du
Affiliation:
Department of Chemistry, Jilin University, Changchun, 130023, P.R.C.
X. M. Qian
Affiliation:
Department of Chemistry, Jilin University, Changchun, 130023, P.R.C.
W. M. Li
Affiliation:
Department of Materials Science, Jilin University, Changchun, 130023, P.R.C.
F. Q. Liu
Affiliation:
Department of Chemistry, Jilin University, Changchun, 130023, P.R.C.
J. Tang
Affiliation:
Department of Chemistry, Jilin University, Changchun, 130023, P.R.C.
X. Y. Tang
Affiliation:
Department of Chemistry, Jilin University, Changchun, 130023, P.R.C.
Y. B. Bai
Affiliation:
Department of Chemistry, Jilin University, Changchun, 130023, P.R.C.
T. J. Li
Affiliation:
Department of Chemistry, Jilin University, Changchun, 130023, P.R.C.
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Abstract

Copolymer latexes of poly(styrene/acrylic acid) were closely packed into two-dimensional arrays on glass, mica and silicon substrates respectively. When the small latexes were negatively charged due to −SO4− and −COO− groups on the surface, their film formation, in some degree, was affected by the electrostatic interaction between two particles as well as capillary force. Different electrolytes were added into the colloid to adjust the particle interaction so that the attractive and the repulsive forces were properly balanced and the ordered arrays were achieved. Thin metal film was deposited on the latex monolayer through thermal evaporation in vacuum. Then, the spheres were dissolved away to leave behind a surface with features located where the interstitial spaces between the densely packed spheres had been. This process depended upon the interaction between the microspheres and the substrates, and the adhesion between the film materials and the substrates. Different patterns of honeycomb net, triangle islands and separate spots can be obtained by controlling the ultrasonic time and intensity.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 501: Symposium FF – Surface Controlled Nanoscale Materials for High-Added… , 1997 , 221
Copyright
Copyright © Materials Research Society 1998

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References

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