Formation of relocatable umbilical defects in a liquid crystal with positive dielectric anisotropy induced via photovoltaic fields
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Molecular Liquids"
DOI: 10.1016/j.molliq.2020.112963
Abstract: Abstract All optically generated, relocatable umbilic defects in a liquid crystal (LC) with positive dielectric anisotropy are reported. The studied samples are made with a Fe-doped LiNbO3 substrate showing the bulk photovoltaic effect and an… read more here.
Keywords: defects liquid; crystal positive; positive dielectric; liquid crystal ... See more keywords
Synthesis and properties of 5,6-dihydro-4H-cyclopenta[b]thiophene-based nematic liquid crystals: A new access to mesogens with high birefringence and large dielectric anisotropy
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Molecular Liquids"
DOI: 10.1016/j.molliq.2020.114827
Abstract: Abstract A novel liquid crystal core unit 5,6-dihydro-4H-cyclopenta[b]thiophene was designed and synthesized in four steps and three mesogens containing terminal cyano group were then obtained. The effects of this skeleton on the mesophase and physical… read more here.
Keywords: birefringence; dielectric anisotropy; thiophene; liquid crystals ... See more keywords
Benzoxazole-terminated liquid crystals with high birefringence and large dielectric anisotropy
Sign Up to like & getrecommendations! Published in 2020 at "Liquid Crystals"
DOI: 10.1080/02678292.2019.1710777
Abstract: ABSTRACT Six benzoxazole-terminated mesogenic compounds with fluoro substituent at different positions were prepared and their properties investigated. The compounds give a high birefringence (Δn~ 0.45) and a large-dielectric anisotropy (Δε~ 26), indicating a possible application… read more here.
Keywords: benzoxazole terminated; large dielectric; liquid crystals; high birefringence ... See more keywords
Wide-temperature-range liquid-crystal display with liquid-crystal material of negative dielectric anisotropy
Sign Up to like & getrecommendations! Published in 2021 at "Molecular Crystals and Liquid Crystals"
DOI: 10.1080/15421406.2021.1930503
Abstract: A vertical alignment mode liquid-crystal display (VA-LCD) with a wide nematic temperature range was developed in this work. For development of this LC cell, a negative dielectric anisotropy liquid-... read more here.
Keywords: temperature range; crystal display; liquid crystal; dielectric anisotropy ... See more keywords
Microsecond Electro-Optic Switching of Nematic Liquid Crystals with Giant Dielectric Anisotropy
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review Applied"
DOI: 10.1103/physrevapplied.12.024005
Abstract: Nematic liquid crystals exhibit a fast optical response when the applied electric field modifies the degree of order but does not change the direction of molecular orientation. The effect requires a relatively high electric field,… read more here.
Keywords: liquid crystals; dielectric anisotropy; electro optic; nematic liquid ... See more keywords
High-resolution dielectric anisotropy investigation of carbon nanotube-smectic-A liquid crystal dispersions: An upper limit of the latent heat and the pretransitional anomaly at the nematic-smectic-A transition.
Sign Up to like & getrecommendations! Published in 2023 at "Physical review. E"
DOI: 10.1103/physreve.107.024702
Abstract: Within the entire mesomorphic range, high-precision dielectric anisotropy data with the high-temperature resolution is presented for a highly polar smectic-A liquid crystal 8CB (octylcyanobiphenyl) as well as 8CB nanocomposites doped with both pristine multi-walled carbon… read more here.
Keywords: high resolution; resolution; heat; dielectric anisotropy ... See more keywords
Low-Temperature Dielectric Anisotropy Driven by an Antiferroelectric Mode in SrTiO_{3}.
Sign Up to like & getrecommendations! Published in 2018 at "Physical review letters"
DOI: 10.1103/physrevlett.120.217601
Abstract: Strontium titanate (SrTiO_{3}) is the quintessential material for oxide electronics. One of its hallmark features is the transition, driven by antiferrodistortive (AFD) lattice modes, from a cubic to a ferroelastic low-temperature phase. Here we investigate… read more here.
Keywords: low temperature; temperature dielectric; anisotropy driven; driven antiferroelectric ... See more keywords
Dielectric Anisotropy Sensor Using Coupled Resonators
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Transactions on Microwave Theory and Techniques"
DOI: 10.1109/tmtt.2019.2958265
Abstract: In this article, a new approach is proposed for the measurement of the uniaxial anisotropic dielectric constant of different planar samples by means of a single sensor. The sensor is based on a couple of… read more here.
Keywords: anisotropy sensor; sensor using; dielectric anisotropy; coupled resonators ... See more keywords