DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Bong-Hoon | ko |
dc.contributor.author | Lee, Hyung-Min | ko |
dc.contributor.author | Lee, Joo-Hyung | ko |
dc.contributor.author | Son, Seung-Woo | ko |
dc.contributor.author | Jeong, Seong-Jun | ko |
dc.contributor.author | Lee, Su-Mi | ko |
dc.contributor.author | Lee, Dong-Il | ko |
dc.contributor.author | Kwak, Sin-Ung | ko |
dc.contributor.author | Jeong, Ha-Woong | ko |
dc.contributor.author | Shin, Hyun-Jung | ko |
dc.contributor.author | Yoon, Jun-Bo | ko |
dc.contributor.author | Lavrentovich, Oleg D. | ko |
dc.contributor.author | Kim, Sang-Ouk | ko |
dc.date.accessioned | 2010-11-29T03:04:07Z | - |
dc.date.available | 2010-11-29T03:04:07Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2009-08 | - |
dc.identifier.citation | ADVANCED FUNCTIONAL MATERIALS, v.19, no.16, pp.2584 - 2591 | - |
dc.identifier.issn | 1616-301X | - |
dc.identifier.uri | http://hdl.handle.net/10203/20458 | - |
dc.description.abstract | Here, spontaneous lamellar alignment in a thickness-modulated block copolymer film is presented as a facile, scalable, and general approach for creating a highly aligned lamellar morphology. Thickness-modulated block copolymer films are prepared on neutral surfaces by various methods, such as solution dropping, dewetting-induced self-organized patterning, and thermal imprinting. Regardless of the film preparation method, the self-assembled lamellar domains become spontaneously aligned along the thickness gradient after sufficient thermal annealing. Real-time AFM imaging reveals that spontaneous alignment occurs through the directional growth of well-ordered domains along the thickness gradient, which is accompanied by defect dynamics, with vertical linear defects moving from thicker parts of the film towards the thinner ones, reducing their length and thus the associated energy. The mechanism underlying this interesting self-aligning behavior is provided by a 'geometric anchoring' phenomenon, originally envisioned to account for the liquid crystal alignment under a non-flat geometry of confinement. This novel self-aligning principle offers a valuable opportunity to control nanoscale alignment in block copolymer films by manipulating the, much larger, microscale morphology. | - |
dc.description.sponsorship | We would like to thank Dr. Meesoon Ha for useful discussions. This work was supported by the second stage of the Brain Korea 21 Project, the National Research Laboratory Program (R0A-2008-000-20057-0, R0A-2007- 000-20105-0), the 21st Century Frontier Research Program (Center for Nanoscale Mechatronics and Manufacturing, 08K1401-01010), and KAIST EEWS (Energy, Environment, Water, and Sustainability) Initiative (EEWS0903), funded by the Korean government. ODL acknowledges the support of grants from the US NSF (DMR0504516) and the State of Ohio (CMPND and RC-SAM). Supporting Information is available online from Wiley InterScience or from the author. | en |
dc.language | English | - |
dc.language.iso | en_US | en |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.subject | SINGLE-LAYER FILMS | - |
dc.subject | COARSENING DYNAMICS | - |
dc.subject | THIN-FILMS | - |
dc.subject | LITHOGRAPHY | - |
dc.subject | PATTERNS | - |
dc.subject | SURFACE | - |
dc.subject | ARRAYS | - |
dc.subject | NANOSTRUCTURES | - |
dc.subject | SOLIDIFICATION | - |
dc.subject | ORIENTATION | - |
dc.title | Spontaneous Lamellar Alignment in Thickness-Modulated Block Copolymer Films | - |
dc.type | Article | - |
dc.identifier.wosid | 000269374800007 | - |
dc.identifier.scopusid | 2-s2.0-70349239270 | - |
dc.type.rims | ART | - |
dc.citation.volume | 19 | - |
dc.citation.issue | 16 | - |
dc.citation.beginningpage | 2584 | - |
dc.citation.endingpage | 2591 | - |
dc.citation.publicationname | ADVANCED FUNCTIONAL MATERIALS | - |
dc.identifier.doi | 10.1002/adfm.200900121 | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.contributor.localauthor | Jeong, Ha-Woong | - |
dc.contributor.localauthor | Yoon, Jun-Bo | - |
dc.contributor.localauthor | Kim, Sang-Ouk | - |
dc.contributor.nonIdAuthor | Son, Seung-Woo | - |
dc.contributor.nonIdAuthor | Lee, Su-Mi | - |
dc.contributor.nonIdAuthor | Lee, Dong-Il | - |
dc.contributor.nonIdAuthor | Kwak, Sin-Ung | - |
dc.contributor.nonIdAuthor | Shin, Hyun-Jung | - |
dc.contributor.nonIdAuthor | Lavrentovich, Oleg D. | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | SINGLE-LAYER FILMS | - |
dc.subject.keywordPlus | COARSENING DYNAMICS | - |
dc.subject.keywordPlus | THIN-FILMS | - |
dc.subject.keywordPlus | LITHOGRAPHY | - |
dc.subject.keywordPlus | PATTERNS | - |
dc.subject.keywordPlus | SURFACE | - |
dc.subject.keywordPlus | ARRAYS | - |
dc.subject.keywordPlus | NANOSTRUCTURES | - |
dc.subject.keywordPlus | SOLIDIFICATION | - |
dc.subject.keywordPlus | ORIENTATION | - |
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