#### Synthesis and self-assembly of block copolymers with precisely controlled flory-huggins interaction parameter정밀하게 조절된 Flory-Huggins 상호작용 인자를 가지는 블록공중합체의 합성과 자기 조립 연구

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dc.contributor.authorHur, Yoon Hyung-
dc.date.accessioned2019-08-25T02:42:09Z-
dc.date.available2019-08-25T02:42:09Z-
dc.date.issued2017-
dc.identifier.urihttp://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=866958&flag=dissertationen_US
dc.identifier.urihttp://hdl.handle.net/10203/265026-
dc.description학위논문(박사) - 한국과학기술원 : 신소재공학과, 2017.2,[vii, 168 p. :]-
dc.description.abstractDirected self-assembly (DSA) of block copolymers (BCP) has garnered much attention due to its well-defined periodic nanostructures of spherical, cylindrical, and lamellar morphologies with a period of 5 - 50 nm. In particular, DSA can provide multiple advantages of high resolution, scalability, and cost-effectiveness, thus it considered as a practical approach to manufacture various semiconductor devices and next-generation information storage media. However, there exist only few BCPs with a high Flory-Huggins interaction parameter ($\chi$) can provide sub-10 nm resolution, high pattern quality, and sufficient etch selectivity. The high-$\chi$ BCPs can generate the high resolution patterns with a low line edge roughness, however, the slow chain diffusion of BCPs results in a prolonged assembly time. Therefore, the $\chi$ of BCP is a main factor to determine the characteristics of self-assembly. To generate well-aligned nano structures within 10 nm dimeter, we synthesize BCPs with a precisely controlled $\chi$ value by diverse organic chemistry and polymer synthesis methods. The BCPs consist of poly(dimethylsiloxane) as one block and poly(2-vinylpyridne), poly(4-vinylpyridne) and poly(isoprene) as other blocks. The $\chi$ value of synthesized BCPs is calculated by small angle X-ray scattering (SAXS) measurement and Libler’s mean field theory. Furthermore, we study that the effect of $\chi$ value on self-assembled pattern quality via the synthesized BCPs. We expect that these diverse BCPs would enable to open the possibility of DSA for future applications.-
dc.languageeng-
dc.publisher한국과학기술원-
dc.subjectBlock copolymers▼aFlory-Huggins interaction parameter▼adirected self-assembly▼apoly(dimethylsiloxane)▼apoly(2-vinylpyridine)▼apoly(4-vinylpyridine)▼apoly(isoprene)-
dc.subject블록공중합체▼aFlory-Huggins 상호작용 인자▼a직접 자기 조립▼a폴리(다이메틸실록세인)▼a폴리(2-비닐피리딘)▼a폴리(4-비닐피리딘)▼a폴리 (이소프렌)-
dc.titleSynthesis and self-assembly of block copolymers with precisely controlled flory-huggins interaction parameter-
dc.title.alternative정밀하게 조절된 Flory-Huggins 상호작용 인자를 가지는 블록공중합체의 합성과 자기 조립 연구-
dc.typeThesis(Ph.D)-
dc.identifier.CNRN325007-
dc.description.department한국과학기술원 :신소재공학과,-
dc.contributor.alternativeauthor허윤형-
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MS-Theses_Ph.D.(박사논문)
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