Wang, J: THE ALIGNMENT OF BLOCK COPOLYMER THIN FILMS
(Sprache: Englisch)
With the miniaturization of devices, block copolymers (BCPs) are emerging as promising candidates for scaffolds and templates in the fabrication of nanoscopic structures. Key to the use of BCPs is control of the orientation and lateral ordering of their...
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With the miniaturization of devices, block copolymers (BCPs) are emerging as promising candidates for scaffolds and templates in the fabrication of nanoscopic structures. Key to the use of BCPs is control of the orientation and lateral ordering of their microdomains in thin films. An external electric field was previously shown to effectively orient BCP microdomains in a desired direction. However, complete alignment of microdomains in BCP thin films remains a challenge due to achieve due to the preferential interactions of blocks at the interfaces with the electrodes. Here, we demonstrate that lithium-PMMA complexes, formed by adding lithium salts to polystyrene-block-poly(methyl methacrylate) (PS-b-PMMA) copolymer, markedly enhanced alignment of BCP microdomains in thin films under an electric field, mainly by the increased dielectric contrast and mediated surface interactions, which significantly reduced the critical field strength. As a result, the aignment of the microdomains under the electric field was significantly enhanced.
Autoren-Porträt von Jia-Yu Wang
Jia-Yu Wang, Ph. D. major at Polymer Science & Engineering. Achieved Ph. D. at University of Massachesetts, Amherst in 2008. Currently a post-doctoral scholar at the University of Chicago.
Bibliographische Angaben
- Autor: Jia-Yu Wang
- 2009, 84 Seiten, Maße: 15 x 22 cm, Kartoniert (TB), Englisch
- Verlag: VDM Verlag
- ISBN-10: 3639157591
- ISBN-13: 9783639157598
Sprache:
Englisch
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