Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Sung-Taek Hur"'
Publikováno v:
Molecular Crystals and Liquid Crystals. 646:154-159
Heterojunction structures consisting of a dye-doped low-molecular-weight liquid-crystalline blue phase (low-BP) sandwiched between polymer cholesteric liquid crystal films with same handedness were fabricated, and its lasing characteristics were expe
Autor:
Suk-Won Choi, Seong-Yong Jo, Sung-Taek Hur, Kibeom Kim, Bo Ram Lee, Sunhwan Kim, Myoung Hoon Song
Publikováno v:
Journal of Materials Chemistry C. 3:5383-5388
Here, a well-aligned dye-doped simple cubic blue phase (BPII) sample is fabricated that is stable over the temperature range of 4 °C and has a photonic bandgap (PBG) equivalent to a visible optical wavelength. We demonstrate the maximum widest tunab
Publikováno v:
Liquid Crystals. 41:101-105
We report the use of graphene as a highly transparent conductive film in liquid-crystal displays (LCDs). Graphene films were synthesised via chemical vapour deposition, transferred onto glass substrates, and then used to fabricate typical twisted nem
Publikováno v:
ACS Applied Materials & Interfaces. 5:8025-8029
A thermodynamically stable blue phase II (BPII) has been prepared, and its electrooptical (EO) performance has been evaluated in a host system of a conventional rodlike nematogen mixed with a bent-core molecule. For the mixed system presented, the wi
Autor:
Sung Taek Hur, Hyeon-cheol Jeong, Fumito Araoka, Hideo Takezoe, Ken Ishikawa, Min-Jun Gim, Suk-Won Choi, Khoa V. Le
Publikováno v:
J. MATER. CHEM.. 22:4627-4630
Upon UV irradiation of a bent-core liquid crystal (LC) bearing an azo linkage doped with chiral molecules, a photo-induced transition takes place from BPI to BPIII. BPIII is stabilised over 20 °C, while the widening of the BPI range is not so remark
Publikováno v:
Soft Matter. 7:8800-8803
We investigated the relationship between the elastic constants of host nematic liquid crystals (NLCs) and the thermal stability of their liquid crystalline blue phase I (BPI). By adding bent-core molecules to a conventional NLC, we could gradually in
Publikováno v:
SID Symposium Digest of Technical Papers. 42:298-301
We demonstrate a polymer-stabilized blue-phase liquid crystal device PS-BPLC, which can be driven by a vertical electric field by transforming normal incident beams into oblique ones. By attaching prism sheets to the cell, the high operating voltage
Autor:
Ken Ishikawa, Sung-Taek Hur, Suk-Won Choi, Hideo Takezoe, Hyun Gi Kim, Jung Soo Jang, Hiroyuki Tada, Sung Soo Kim
Publikováno v:
Thin Solid Films. 519:2011-2014
We fabricated copper phthalocyanine (CuPc) thin-film field-effect transistors (FETs) on a rubbed flexible polyethersulfone (PES) substrate. Rubbing the PES film induced a unidirectional orientation of CuPc crystallites, which were oriented perpendicu
Publikováno v:
SID Symposium Digest of Technical Papers. 44:258-260
A photoinduced liquid crystalline cubic blue phase (BP) has been obtained in a mixture of photoinactive and photoresponsive bent-core mesogens. The ultraviolet light can convert chiral nematic to cubic BP through photoisomerization of the azobenzene
Publikováno v:
Journal of the Korean Physical Society. 60:1196-1198
A feasibility test of a direct-lit backlight unit (BLU) for a 32-inch liquid crystal display (LCD) incorporating a newly designed pyramid sheet is carried out. The single pyramid sheet in this BLU replaces two diffuser sheets (DSs). Although the view