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Full-Text Articles in Physical Sciences and Mathematics
Alignment By Langmuir/Schaefer Monolayers Of Bent-Core Liquid Crystals, Wilder Iglesias, Timothy Smith, Prem Basnet, Sharon Stefanovic, Carsten Tschierske, Daniel Lacks, Antal Jakli, Elizabeth Mann
Alignment By Langmuir/Schaefer Monolayers Of Bent-Core Liquid Crystals, Wilder Iglesias, Timothy Smith, Prem Basnet, Sharon Stefanovic, Carsten Tschierske, Daniel Lacks, Antal Jakli, Elizabeth Mann
Antal Jakli
Langmuir films of bent-core molecules at the air/water interface are transferred onto a solid surface by the inverse-Langmuir-Schaefer (ILS) technique. Previous work by the authors demonstrated that ILS films of a symmetric bent-core molecule can serve as effective planar alignment layers for a nematic bent-core liquid crystal cell, but the Langmuir films were unstable and formed multilayers at very low pressures. Here, films of bent-core molecules with one hydrophilic end connected to the bent core by a short aliphatic chain are tested as alignment layers. The hydrophilic group led to much more stable Langmuir films, and also to a molecular …
Liquid Crystalline Amorphous Blue Phase And Its Large Electrooptical Kerr Effect, Khoa Le, Satoshi Aya, Yuji Sasaki, Hyunhee Choi, Fumito Araoka, Kenji Ema, Jozef Mieczkowski, Antal Jákli, Ken Ishikawa, Hideo Takezoe
Liquid Crystalline Amorphous Blue Phase And Its Large Electrooptical Kerr Effect, Khoa Le, Satoshi Aya, Yuji Sasaki, Hyunhee Choi, Fumito Araoka, Kenji Ema, Jozef Mieczkowski, Antal Jákli, Ken Ishikawa, Hideo Takezoe
Antal Jakli
An amorphous blue phase III with low and wide thermal range (similar to 20 degrees C) including room temperature is induced by doping a bent-core nematic with a strong chiral material. We confirm that the electrooptical response is due to the Kerr effect, with the Kerr constant being up to two orders of magnitude larger than conventional Kerr materials such as nitrobenzene.