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Characteristics and Micropatterning of Spin Self-Assembled Ultrathin Multilayers

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Authors
Char, Kookheon; Kim, Sangcheol; Cho, Jinhan; Sohn, Hiesang; Jang, Hongseok
Issue Date
2002
Publisher
World Scientific Publishing
Citation
Int. J. Nanosci. 1, 375 (2002)
Keywords
Spin self-assembly methodmultilayer thin Flmsmicropatternsmicrofluidic channelsconvective self-assembly
Abstract
A new method is introduced to build organic/organic multilayer films composed of cationic poly(allylamine hydrochloride) (PAH) and negatively-charged poly(sodium 4-styrenesulfonate) (PSS) using the spinning process. The adsorption process is governed by both the viscous force induced by fast solvent elimination and the electrostatic interaction between oppositely-charged species. On the other hand, the centrifugal and air shear forces applied by the spinning process enhance significantly the desorption of weakly-bound polyelectrolyte chains and also induce the planarization of the adsorbed polyelectrolyte layer. The surface of the multilayer films prepared with the spinning process is quite homogeneous and smooth. Also, a new approach to create multilayer ultrathin films with well-defined micropatterns in short process time is introduced. To achieve such micropatterns with high line resolution in organic multilayer films, microfluidic channels were combined with the convective self-assembly process employing both hydrogen bonding and electrostatic intermolecular interactions. As a next step, we extended the spin SA to the fabrication of multilayer micropatterns with vertical heterostructure.
ISSN
0219-581X
Language
English
URI
http://hdl.handle.net/10371/5866
DOI
https://doi.org/10.1142/S0219581X0200036X
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Chemical and Biological Engineering (화학생물공학부)Journal Papers (저널논문_화학생물공학부)
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