Morphological change of microphase-separated structures in block copolymer thin films

Ukyo Matsuwaki; Hidekazu Sugimori; Ken Ichi Niihara; Yukihiro Nishikawa; Hiroshi Jinnai; Toshio Nishi

Morphological change of microphase-separated structures in block copolymer thin films

Ukyo Matsuwaki, Hidekazu Sugimori, Ken Ichi Niihara, Yukihiro Nishikawa, Hiroshi Jinnai, Toshio Nishi

Research output: Contribution to conference › Paper › peer-review

Abstract

Tokyo Institute of Technology We discovered morphological change (MC) in thin films when film thickness was less than 100 nm. A block copolymer of poly (styrene-block-isoprene)(SI), which exhibits cylindrical microdomain structure in a state of a bulk, formed cylinders that lay parallel to the film surface in thin films when film thickness match the hexagonal lattice of cylinders in a state of a bulk. And other side it formed spheres when film thickness mismatch the hexagonal lattice. In this case, we observed the MC from cylinders to sphere. We speculate that the distortion of hexagonal lattice of PI cylinders just before MC will drive internal microdomain of PI in thin films and will transform to spherical microdomain structures.

Original language	English
Number of pages	1
Publication status	Published - 2006 Oct 19
Externally published	Yes
Event	55th SPSJ Annual Meeting - Nagoya, Japan Duration: 2006 May 24 → 2006 May 26

Other

Other	55th SPSJ Annual Meeting
Country/Territory	Japan
City	Nagoya
Period	06/5/24 → 06/5/26

Keywords

Block Copolymer
Morphological change/Microphase-separated structures
Thin film(s)
Transmission Electron Microtomography

ASJC Scopus subject areas

Engineering(all)

Cite this

@conference{8223dd91cd2947f8aa64b8835482b4e2,

title = "Morphological change of microphase-separated structures in block copolymer thin films",

abstract = "Tokyo Institute of Technology We discovered morphological change (MC) in thin films when film thickness was less than 100 nm. A block copolymer of poly (styrene-block-isoprene)(SI), which exhibits cylindrical microdomain structure in a state of a bulk, formed cylinders that lay parallel to the film surface in thin films when film thickness match the hexagonal lattice of cylinders in a state of a bulk. And other side it formed spheres when film thickness mismatch the hexagonal lattice. In this case, we observed the MC from cylinders to sphere. We speculate that the distortion of hexagonal lattice of PI cylinders just before MC will drive internal microdomain of PI in thin films and will transform to spherical microdomain structures.",

keywords = "Block Copolymer, Morphological change/Microphase-separated structures, Thin film(s), Transmission Electron Microtomography",

author = "Ukyo Matsuwaki and Hidekazu Sugimori and Niihara, {Ken Ichi} and Yukihiro Nishikawa and Hiroshi Jinnai and Toshio Nishi",

year = "2006",

month = oct,

day = "19",

language = "English",

note = "55th SPSJ Annual Meeting ; Conference date: 24-05-2006 Through 26-05-2006",

}

TY - CONF

T1 - Morphological change of microphase-separated structures in block copolymer thin films

AU - Matsuwaki, Ukyo

AU - Sugimori, Hidekazu

AU - Niihara, Ken Ichi

AU - Nishikawa, Yukihiro

AU - Jinnai, Hiroshi

AU - Nishi, Toshio

PY - 2006/10/19

Y1 - 2006/10/19

N2 - Tokyo Institute of Technology We discovered morphological change (MC) in thin films when film thickness was less than 100 nm. A block copolymer of poly (styrene-block-isoprene)(SI), which exhibits cylindrical microdomain structure in a state of a bulk, formed cylinders that lay parallel to the film surface in thin films when film thickness match the hexagonal lattice of cylinders in a state of a bulk. And other side it formed spheres when film thickness mismatch the hexagonal lattice. In this case, we observed the MC from cylinders to sphere. We speculate that the distortion of hexagonal lattice of PI cylinders just before MC will drive internal microdomain of PI in thin films and will transform to spherical microdomain structures.

AB - Tokyo Institute of Technology We discovered morphological change (MC) in thin films when film thickness was less than 100 nm. A block copolymer of poly (styrene-block-isoprene)(SI), which exhibits cylindrical microdomain structure in a state of a bulk, formed cylinders that lay parallel to the film surface in thin films when film thickness match the hexagonal lattice of cylinders in a state of a bulk. And other side it formed spheres when film thickness mismatch the hexagonal lattice. In this case, we observed the MC from cylinders to sphere. We speculate that the distortion of hexagonal lattice of PI cylinders just before MC will drive internal microdomain of PI in thin films and will transform to spherical microdomain structures.

KW - Block Copolymer

KW - Morphological change/Microphase-separated structures

KW - Thin film(s)

KW - Transmission Electron Microtomography

UR - http://www.scopus.com/inward/record.url?scp=33749829950&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33749829950&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:33749829950

T2 - 55th SPSJ Annual Meeting

Y2 - 24 May 2006 through 26 May 2006

ER -

Morphological change of microphase-separated structures in block copolymer thin films

Abstract

Other

Keywords

ASJC Scopus subject areas

Other files and links

Fingerprint

Cite this