Electrooptical Properties of Diacrylate Based Polymer Network Stabilized Ferroelectric Liquid Crystals

2007 ◽  
Vol 475 (1) ◽  
pp. 173-181 ◽  
Author(s):  
Wenjun Zheng
Keyword(s):  
Liquid Crystals ◽  
Polymer Network ◽  
Ferroelectric Liquid Crystals ◽  
Electrooptical Properties

scholarly journals Thermal and Electrooptical Properties of Ferroelectric Liquid Crystals Having OH Groups

1991 ◽  
Vol 64 (5) ◽  
pp. 1652-1657 ◽  
Author(s):  
Kazuo Sugiyama ◽  
Koichi Kato ◽  
Kohei Shiraishi
Keyword(s):  
Liquid Crystals ◽  
Ferroelectric Liquid Crystals ◽  
Oh Groups ◽  
Electrooptical Properties

Influence of polymer network in polymer-stabilized ferroelectric liquid crystals and its direct observation using a confocal microscope

2006 ◽  
Vol 99 (1) ◽  
pp. 014102 ◽  
Author(s):  
R. Petkovšek ◽  
J. Pirš ◽  
S. Kralj ◽  
M. Čopič ◽  
D. Šuput
Keyword(s):  
Liquid Crystals ◽  
Direct Observation ◽  
Polymer Network ◽  
Confocal Microscope ◽  
Ferroelectric Liquid Crystals ◽  
Polymer Stabilized

Electrooptical Properties of Phase Separated Composite Organic Films of Ferroelectric Liquid Crystals

1998 ◽  
Vol 29 (1) ◽  
pp. 786 ◽  
Author(s):  
V. Vorflusev ◽  
T. Sergan ◽  
S. Kumar
Keyword(s):  
Liquid Crystals ◽  
Organic Films ◽  
Ferroelectric Liquid Crystals ◽  
Electrooptical Properties

Effect of Polymer Network in Polymer Dispersed Ferroelectric Liquid Crystals (PSFLC)

2015 ◽  
pp. 133-167
Author(s):  
Tapas Pal Majumder ◽  
Tanmoy Lahiri ◽  
Prabir Kumar Mukherjee
Keyword(s):  
Liquid Crystals ◽  
Polymer Network ◽  
Ferroelectric Liquid Crystals ◽  
Polymer Dispersed

Formation of Polymer Stabilized Ferroelectric Liquid Crystals using a Fluorinated Diacrylate

1999 ◽  
Vol 559 ◽  
Author(s):  
C. Allan Guymon ◽  
Christopher N. Bowman ◽  
Christopher N. Bowman
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystals ◽  
Polymer Network ◽  
Isotropic Phase ◽  
Ferroelectric Liquid Crystals ◽  
Smectic C ◽  
Electro Optic ◽  
Polymerization Behavior ◽  
Mechanically Stabilized ◽  
Polymer Stabilized

ABSTRACTFerroelectric liquid crystals (FLCs) have shown great potential for use in electro-optic and display technology due to their inherently fast switching speeds and bistability. Recently, considerable research has been devoted to FLCs mechanically stabilized by a polymer network. The network is formed typically by in situ polymerization of a monomer dissolved in the FLC. Because of the inherent order in the FLC, the polymerization behavior may be significantly different than what might be expected in solution polymerizations. These deviations result largely from the segregation properties of the monomer in the liquid crystal. One class of monomers, namely fluorinated acrylates, is a likely candidate for inducing novel segregation, polymerization and electro-optic behavior in polymer stabilized ferroelectric liquid crystals (PSFLCs). The use of fluorinated moieties has a significant impact on the phase and polymerization behavior of liquid crystal systems. This study focuses on the polymerization of a fluorinated diacrylate, octafluoro 1,6-hexanediol diacrylate (FHDDA), to form PSFLCs and the consequent impact of the polymerization on the ultimate performance. Interestingly, as the temperature is increased and the order of the system decreases, a dramatic increase in the polymerization rate is observed. This increase is especially prominent for polymerizations in the smectic C* phase for which the rate is more than five times that exhibited at much higher temperatures in the isotropic phase. As with other monomer/FLC systems, the segregation of the monomer plays a role in this polymerization behavior as the monomer segregates between the smectic layers of the liquid crystal. The segregation properties also significantly impact the ultimate electro-optic properties. Both ferroelectric polarization and response time of the PSFLC change markedly with different polymerization temperatures, and approach values very close to those of the neat FLC under appropriate polymerization conditions. This behavior not only provides a unique mechanism for rate acceleration in PSFLCs, but also paves the way for new methods to optimize performance in these materials.

Effect of the network density on dynamics of the soft and the Goldstone modes in short-pitch ferroelectric liquid crystals stabilized by an anisotropic polymer network

2009 ◽  
Vol 79 (3) ◽  
Author(s):  
Mohamed Petit ◽  
Jamal Hemine ◽  
Abdelylah Daoudi ◽  
Mimoun Ismaili ◽  
Jean Marc Buisine ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Polymer Network ◽  
Network Density ◽  
Ferroelectric Liquid Crystals ◽  
Goldstone Modes

Influence of the Polymer Network on the Switching Behaviors in the Polymer Stabilized Ferroelectric Liquid Crystals

2002 ◽  
Vol 41 (Part 1, No. 10) ◽  
pp. 6011-6015 ◽  
Author(s):  
Janez Pirš ◽  
Philip Bos ◽  
Rok Petkovšek ◽  
Samo Kralj ◽  
Silva Pirš ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Polymer Network ◽  
Ferroelectric Liquid Crystals ◽  
Polymer Stabilized

Synthesis of new ferroelectric liquid crystals

1978 ◽  
Vol 3 ◽  
pp. 139-143 ◽  
Author(s):  
P. Keller
Keyword(s):  
Liquid Crystals ◽  
Ferroelectric Liquid Crystals

Evidence of two new ordered smectic phases in ferroelectric liquid crystals

1978 ◽  
Vol 39 (5) ◽  
pp. 548-553 ◽  
Author(s):  
J. Doucet ◽  
P. Keller ◽  
A.M. Levelut ◽  
P. Porquet
Keyword(s):  
Liquid Crystals ◽  
Ferroelectric Liquid Crystals ◽  
Smectic Phases
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