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CATEGORIES:Isaac Newton Institute Seminar Series
SUMMARY:Constrained Energy Minimization for Bent-Core Liqu
 id Crystals - Lidia Mrad (University of Arizona)
DTSTART;TZID=Europe/London:20190516T160000
DTEND;TZID=Europe/London:20190516T164000
UID:TALK124597AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/124597
DESCRIPTION:One of the important applications of liquid crysta
 l materials is their use in optical and display de
 vices. There are several phases of liquid crystals
 \, some of which promise more efficient and less e
 xpensive optical devices than others. A recently d
 iscovered phase is made up of bow-shaped molecules
 \, a characteristic that endows them with spontane
 ous ferroelectricity. Under the effect of an appli
 ed electric field\, two competing mechanisms of sw
 itching can be detected in the tilted structure of
  these materials. An important question in this se
 tup is how the dominant mechanism - switching here
  - is affected by specific system parameters. We f
 ormulate the model as an energy minimization probl
 em allowing us to use several variational tools in
  its analysis. We emphasize how we can deal with c
 hallenges that arise from constraints and nonlinea
 rities peculiar to this problem. Our results addre
 ss existence and uniqueness of solutions to the en
 suing partial differential equations\, which in tu
 rn shed light on the physical mechanisms observed.
LOCATION:Seminar Room 1\, Newton Institute
CONTACT:INI IT
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