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of 311
pro vyhledávání: '"Yoichi Takanishi"'
Autor:
Jae-Jin Lee, Sangsub Kim, Hiroya Nishikawa, Yoichi Takanishi, Hiroshi Iwayama, Changsoon Kim, Suk-Won Choi, Fumito Araoka
Publikováno v:
International Journal of Molecular Sciences, Vol 23, Iss 23, p 14629 (2022)
In this paper, chiral intermediate phases composed of two achiral molecules are fabricated by utilizing nanophase separation and molecular hierarchical self-organization. An achiral bent-core guest molecule, exhibiting a calamitic nematic and a dark
Externí odkaz:
https://doaj.org/article/5c010829a3a34b209b2ba7b47381f170
Chiral Symmetry Breaking in Liquid Crystals: Appearance of Ferroelectricity and Antiferroelectricity
Autor:
Yoichi Takanishi
Publikováno v:
Symmetry, Vol 12, Iss 11, p 1900 (2020)
The study of chiral symmetry breaking in liquid crystals and the consequent emergence of ferroelectric and antiferroelectric phases is described. Furthermore, we show that the frustration between two phases induces a variety of structural phases call
Externí odkaz:
https://doaj.org/article/832d7d414999483a9b6cc24329fdf04f
Publikováno v:
RSC Advances. 12:29346-29349
We studied the structure of a helical nano-filament of the B4 phase in mixtures of a cholesteric liquid crystal mixture and a bent-core molecule using a resonant soft X-ray scattering (RSoXS) technique. In this system, nanophase separation occurs and
Publikováno v:
Physical Review E. 104
Prompted by the existence of biaxial subphases 1/4, 2/5, and 3/7 [Phys. Rev. E 96, 012701 (2017)2470-004510.1103/PhysRevE.96.012701], we reconsidered the three-phase frustration and the resulting degeneracy lifting by combining the phase diagram of S
Autor:
Yoichi Takanishi, Jun Yamamoto, Masanobu Sagisaka, Atsushi Yoshizawa, Ryuji Oikawa, Haruna Sasaki
Publikováno v:
Soft Matter. 15:3179-3187
We prepared a homologous series of achiral liquid crystal trimers (I-n) in which two phenylpyrimidine units and one biphenyl unit were connected via flexible spacers, and investigated the physical properties. All the trimers possessing odd-numbered m
Autor:
Shinya Sugiura, Yasuteru Shigeta, Hiromitsu Maeda, Go Watanabe, Satoshi Aya, Kazuto Nakamura, Ryuma Sato, Yoichi Takanishi, Fumito Araoka
Publikováno v:
Organic letters. 23(2)
This study focused on the use of nonconventional bent-core π-electronic systems, 2,2'-bipyrroles substituted with modified benzoyl units, as building units of stimuli-responsive assemblies. Electric-field-responsive mesophase behaviors were observed
Autor:
Yoichi Takanishi
Publikováno v:
Soft matter. 17(3)
Herein, the local nano-structure in mixtures of a cholesteric liquid crystal mixture and a bent-core molecule was analyzed via the small-angle X-ray scattering. Accordingly, different types of orientational X-ray patterns were obtained, suggesting th
Autor:
Kunyun He, Yoko Ishii, Teresa Lopez-Leon, Juan J. de Pablo, Jun Yamamoto, Ye Zhou, Yoichi Takanishi
Publikováno v:
Soft Matter
Soft Matter, Royal Society of Chemistry, 2020, 16 (35), pp.8169-8178. ⟨10.1039/d0sm00340a⟩
Soft Matter, Royal Society of Chemistry, 2020, 16 (35), pp.8169-8178. ⟨10.1039/d0sm00340a⟩
International audience; The role of applied fields on the structure of liquid crystals confined to shell geometries has been studied in past theoretical work, providing strategies to produce liquid crystal shells with controlled defect structure or v
Publikováno v:
ChemistrySelect. 3:3278-3283
Publikováno v:
Journal of Materials Chemistry C. 6:5521-5527
We prepared an achiral taper-shaped liquid crystal in which cyanobiphenyl, phenylpyrimidine, and 1,4-diphenyl-2,3-difluorobenzene units are connected to 2,4-dihydroxybenzoic acid via flexible spacers. We then investigated its liquid-crystalline prope