@inproceedings{oai:jaxa.repo.nii.ac.jp:00013179,
 author = {岡本, 茂 and 早川, 知克 and 日原, 岳彦 and 山本, 勝宏 and 長谷川, 博一 and 高山, 茂樹 and 池田, 章彦 and 毛利, 政博 and 坂本, 直紀 and 越川, 尚清 and 安藤, 幸治 and Okamoto, Shigeru and Hayakawa, Tomokatsu and Hihara, Takehiko and Yamamoto, Katsuhiro and Hasegawa, Hirokazu and Takayama, Shigeki and Ikeda, Akihiko and Mouri, Masahiro and Sakamoto, Naoki and Koshikawa, Naokiyo and Ando, Koji},
 book = {宇宙利用シンポジウム, Space Utilization Research: Proceedings of Space Utilization Symposium},
 month = {Feb},
 note = {第26回宇宙利用シンポジウム(2010年1月25日-26日, 宇宙航空研究開発機構宇宙科学研究本部相模原キャンパス), The Twenty-sixth Space Utilization Symposium (January 25-26, 2010: ISAS/JAXA Sagamihara, Japan), "The Polymeric Photonic Crystal Working Group" has conducted the research of photonic crystals fabricated with polymeric materials. Block copolymers with ultra-high-molecular-weight such as 10(exp 6) g/mol are expected to be used as materials of photonic crystals because self-assembly of block copolymers provides a bottom-up approach easier for fabricating optical devices than a top-down approach. We already showed microphase separation can be induced by addition of differentiating non-solvent to a low concentration solution. As a result, highly ordered large grains on the order of centimeter were formed in the vicinity of the phase boundary because of the high mobility. However, the resulting crystals had the structural distortion along the gravity force, such as morphological transition or lattice distance distribution. We consider the distortion resulted from the concentration gradient of the constituent components In this study, as a model polymer, we used polystyrene-block-poly tert-butyl methacrylate which was synthesized by the living anionic polymerization technique. Computer simulation and small-angle neutron scattering were performed to elucidate the effect of the concentration difference on the structural change. We found that the subtle difference of the water concentration had the great effect on the lattice distance and that the common solvent also moved from one phase to the other by the addition of the differentiating non-solvent. By this result, we established a technique to estimate the composition gradient generated by the gravity force. Using this method, we can evaluate the microgravity effect on the crystal growth which will be performed on the ISS in the future., 共催: 日本学術会議, 著者人数: 11人, joint hosting: The Science Council of Japan, 資料番号: AA0064730032},
 publisher = {宇宙航空研究開発機構宇宙科学研究本部, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)},
 title = {2009年度高分子フォトニック結晶WG活動報告: 高分子溶液中における濃度分布に与える重力効果と分布の評価},
 volume = {26},
 year = {2010}
}