An experimental investigation of electrically induced-birefringence of Kerr effect in polymer-stabilized blue phase liquid crystals resulting from orientations of liquid crystals

Chen, Hung Shan; Ni, Shih Ya; Lin, Yi-Hsin

doi:10.1063/1.4748117

Cited by 6 publications

(6 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[40] In addition, some recent studies indicate that a uniform BP alignment can enhance the electrooptic performance. [146,147,[153][154][155] This finding abates the hope that PSBP can be applied without using any alignment layer. This aspect needs further studies.…”

Section: Residual Birefringencementioning

confidence: 79%

“…Concerning the field‐induced birefringence, early studies have revealed a field‐induced biaxiality . In addition, some recent studies indicate that a uniform BP alignment can enhance the electro‐optic performance . This finding abates the hope that PSBP can be applied without using any alignment layer.…”

Section: Further Subjects Of Recent Studiesmentioning

confidence: 98%

“…where Δn and Δε are the birefringence and the dielectric anisotropy of the nematic host mixture, p is the helix pitch, q = 2π/p is [103] and chiral dopants with high helical twisting power (ZLI-4572, Merck, [99] ISO-(6OBA) 2, [89,145,155] R-5011, Merck [101,105,106,111,154] ). Below: Photoreactive monomers used for polymer-stabilization {(2-ethylhexyl)-acrylate (EHA), [6,99,153] mesogenic reactive monomer RM-257 (Merck), [6,99,101,105,106,145,153,154,167] mesogenic monofunctional reactive monomer 6CBA [110] and non-mesogenic tri-functional monomer trimethylolpropane triacrylate (TMPTA) [101,104,106,154,167] }. (b) Phase transition temperatures of polymer-stabilized multicomponent mixtures containing mono-and di-functional reactive monomers (EHA and RM-257) versus molar fraction of EHA in the monomer mixture, as reported by Kikuchi et al (data from Ref.…”

Section: Kerr Effect In Polymer-stabilized Blue Phases: Recent Develomentioning

confidence: 99%

See 2 more Smart Citations

Polymer‐stabilized blue phases: promising mesophases for a new generation of liquid crystal displays

Nordendorf

Hoischen

Schmidtke

et al. 2014

Polymers for Advanced Techs

View full text Add to dashboard Cite

Blue phases—special chiral liquid crystalline mesophases—are promising candidates for electro‐optic devices with improved performance and simplified fabrication. A necessary precondition for possible applications is a significantly enhanced temperature range of their existence, which can be achieved by a cross‐linked polymer network formed by in situ polymerization. Unlike many other mesophases, blue phases are optically isotropic if no voltage is applied. Regarding the transmission of a blue phase cell placed between crossed polarizers, the optical isotropy enables—at least in principle—a perfect dark state, independent of the viewing angle, without the necessity of any alignment layer. The application of an in‐plane electric field induces a strong birefringence (Kerr effect). The effective Kerr constants are much larger than those of isotropic liquids, and the switching times between the dark and the induced bright state are in the submillisecond range. Some basic properties of blue phases, state‐of‐the‐art performance, and remaining challenges of the development of polymer‐stabilized blue phases are reviewed in this article. Copyright © 2014 John Wiley & Sons, Ltd.

show abstract

Section: Residual Birefringencementioning

confidence: 79%

Section: Further Subjects Of Recent Studiesmentioning

confidence: 98%

Section: Kerr Effect In Polymer-stabilized Blue Phases: Recent Develomentioning

confidence: 99%

See 1 more Smart Citation

Polymer‐stabilized blue phases: promising mesophases for a new generation of liquid crystal displays

Nordendorf

Hoischen

Schmidtke

et al. 2014

Polymers for Advanced Techs

View full text Add to dashboard Cite

show abstract

“…However, despite reports that the Kerr effect in PDLCs might be attributable to orientation of LC molecules, there has been no clear evidence to date [18]. In addition to LC droplets in PDLCs, blue-phase LCs (BPLCs) consisting of double-twisted cylinders also exhibit the Kerr effect [24][25][26][27]. In 2012, we first experimentally demonstrated that the orientation of LC molecules gives rise to the Kerr effect in BPLCs by analyzing the optical phase of BPLCs and the transmittance of dye-doped BPLCs [27].…”

Section: Introductionmentioning

confidence: 99%

“…In addition to LC droplets in PDLCs, blue-phase LCs (BPLCs) consisting of double-twisted cylinders also exhibit the Kerr effect [24][25][26][27]. In 2012, we first experimentally demonstrated that the orientation of LC molecules gives rise to the Kerr effect in BPLCs by analyzing the optical phase of BPLCs and the transmittance of dye-doped BPLCs [27]. This finding motivates us to study the relationship between the orientations of LC molecules and the Kerr effect in PDLCs.…”

Section: Introductionmentioning

confidence: 99%

Origins of Kerr phase and orientational phase in polymer-dispersed liquid crystals

et al. 2017

Self Cite

View full text Add to dashboard Cite

Polymer-dispersed liquid crystals (PDLCs) modulate the amplitude and optical phase of light. The optical phase modulation of PDLC can be dissected into two parts: Kerr phase and orientational phase according to the electro-optical (EO) response. We investigated the origins of the Kerr and orientational phases in PDLCs and their connection with the two-step EO response. The Kerr phase is attributed to LC orientation in the center of LC droplets. The orientational phase results from orientation of LC molecules near LC-polymer interfaces. Both phases can be adjusted by varying the droplet size. The two-step EO response in small droplets (<333 nm) is related to the Kerr and orientational phases, and possibly to rotation of point defects. A modified PDLC model considering the Kerr and orientational phases is proposed. Our findings suggest the possibility of versatile photonic devices using pure optical phase modulation.

show abstract

Electro-tunable optical cavity filters in near-infrared regime

Nasir

Saleem

Nisar

et al. 2021

Optik

View full text Add to dashboard Cite

An experimental investigation of electrically induced-birefringence of Kerr effect in polymer-stabilized blue phase liquid crystals resulting from orientations of liquid crystals

Cited by 6 publications

References 12 publications

Polymer‐stabilized blue phases: promising mesophases for a new generation of liquid crystal displays

Polymer‐stabilized blue phases: promising mesophases for a new generation of liquid crystal displays

Origins of Kerr phase and orientational phase in polymer-dispersed liquid crystals

Electro-tunable optical cavity filters in near-infrared regime

Contact Info

Product

Resources

About