Polymeric Quasicrystal: Mesoscopic Quasicrystalline Tiling in ABC Star Polymers

by: Kenichi Hayashida, Tomonari Dotera, Atsushi Takano, Yushu Matsushita

Physical Review Letters, Vol. 98, No. 19. (2007)

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A mesoscopic tiling pattern with 12-fold symmetry has been observed in a three-component polymer system composed of polyisoprene, polystyrene, and poly(2-vinylpyridine) which forms a star-shaped terpolymer, and a polystyrene homopolymer blend. Transmission electron microscopy images reveal a nonperiodic tiling pattern covered with equilateral triangles and squares, their triangle/square number ratio of 2.3 (4/), and a microbeam x-ray diffraction pattern shows dodecagonal symmetry. The same kind of quasicrystalline structures have been found for metal alloys (~0.5 nm), chalcogenides (~2 nm), and liquid crystals (~10 nm). The present result (~50 nm) confirms the universal nature of dodecagonal quasicrystals over several hierarchical length scales.

@article{citeulike:2754244, abstract = {A mesoscopic tiling pattern with 12-fold symmetry has been observed in a three-component polymer system composed of polyisoprene, polystyrene, and poly(2-vinylpyridine) which forms a star-shaped terpolymer, and a polystyrene homopolymer blend. Transmission electron microscopy images reveal a nonperiodic tiling pattern covered with equilateral triangles and squares, their triangle/square number ratio of 2.3 (4/), and a microbeam x-ray diffraction pattern shows dodecagonal symmetry. The same kind of quasicrystalline structures have been found for metal alloys (~0.5 nm), chalcogenides (~2 nm), and liquid crystals (~10 nm). The present result (~50 nm) confirms the universal nature of dodecagonal quasicrystals over several hierarchical length scales.}, author = {Hayashida, Kenichi and Dotera, Tomonari and Takano, Atsushi and Matsushita, Yushu }, citeulike-article-id = {2754244}, doi = {10.1103/PhysRevLett.98.195502}, journal = {Physical Review Letters}, keywords = {2007, focus, material, optical, polymer, structure}, number = {19}, posted-at = {2008-05-04 17:25:30}, priority = {2}, publisher = {APS}, title = {Polymeric Quasicrystal: Mesoscopic Quasicrystalline Tiling in ABC Star Polymers}, url = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal\&id=PRLTAO000098000019195502000001\&idtype=cvips\&gifs=yes}, volume = {98}, year = {2007} }

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TY - JOUR ID - citeulike:2754244 L3 - citeulike-article-id:2754244 TI - Polymeric Quasicrystal: Mesoscopic Quasicrystalline Tiling in ABC Star Polymers JF - Physical Review Letters VL - 98 IS - 19 PB - APS N2 - A mesoscopic tiling pattern with 12-fold symmetry has been observed in a three-component polymer system composed of polyisoprene, polystyrene, and poly(2-vinylpyridine) which forms a star-shaped terpolymer, and a polystyrene homopolymer blend. Transmission electron microscopy images reveal a nonperiodic tiling pattern covered with equilateral triangles and squares, their triangle/square number ratio of 2.3 (4/), and a microbeam x-ray diffraction pattern shows dodecagonal symmetry. The same kind of quasicrystalline structures have been found for metal alloys (~0.5 nm), chalcogenides (~2 nm), and liquid crystals (~10 nm). The present result (~50 nm) confirms the universal nature of dodecagonal quasicrystals over several hierarchical length scales. KW - 2007 KW - focus KW - material KW - optical KW - polymer KW - structure AU - Hayashida, Kenichi AU - Dotera, Tomonari AU - Takano, Atsushi AU - Matsushita, Yushu PY - 2007/// UR - http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PRLTAO000098000019195502000001&idtype=cvips&gifs=yes ER -

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