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CATEGORIES:Lectures & Speakers
DESCRIPTION:Dr. Giordano Tierra\, Associate Professor in Department of Math
 ematics at University of North Texas will give a seminar titled "On Models 
 and Numerical Schemes for Nematic Liquid Crystals and Their Applications" t
 o the interested faculty and students at Discovery Park.\n\n \n\nAbstract\n
 \nLiquid crystals are important materials that are used in several technolo
 gical applications. The most common usage is in the omnipresent liquid crys
 tal displays which uses the birefringence property of the material to creat
 e images on a screen. However\, liquid crystals also respond to other exter
 nal stimuli\, e.g. magnetic\, mechanical\, chemical\, which can be used to 
 induce complex shape changes in the material used for applications in biome
 dical devices\, robotics\, optics\, textiles\, and sensors. Liquid crystals
  exhibit intermediate phases between solid and liquid. One such phase is th
 e nematic phase which possess the microscopic orientational order of a crys
 talline solid\, however\, the molecules have no positional order but flow f
 reely past each other and thus display macroscopic properties of a liquid. 
 Models of liquid crystals usually represent molecules as rods or disks and 
 use some parameter to describe the orientation of the molecules.\nIn this p
 resentation I will discuss the main ideas of two of the most popular models
  to represent nematic liquid crystals: the Oseen-Frank director theory and 
 the Landau-de Gennes formulation. In particular\, I will present the main i
 deas to derive reliable numerical schemes to approximate these PDE systems.
  In both cases the key point is to try to preserve the properties of the or
 iginal model while the numerical schemes are efficient in time.\n\nFinally\
 , I will talk about how these models and the ideas for deriving the associa
 ted numerical schemes can be extended to give insights of realistic situati
 ons observed in lab experiments.\n\n \n\nBio\n\nDr. Tierra is an Associate 
 Professor at University of North Texas with research interests in applied m
 athematics. In particular\, his research focus on modeling\, numerical anal
 ysis and scientific computing techniques with special emphasis on applicati
 ons to life and material sciences that are formulated using systems of coup
 led partial differential equations.\n\nDr Tierra obtained his Ph.D. in Math
 ematics at Universidad de Sevilla (Spain) in 2012 under the supervision of 
 Prof. Francisco Guill´en-Gonz´alez. Then he held postdoctoral researcher po
 sitions in the Department of Applied and Computational Mathematics and Stat
 istics at the University of Notre Dame and in the Mathematical Institute at
  Charles University in Prague (Czech Republic). After that he was a Researc
 h Assistant Professor at Temple University.
DTEND:20251003T170000Z
DTSTAMP:20260410T161058Z
DTSTART:20251003T160000Z
GEO:33.253134;-97.148579
LOCATION:Discovery Park Building\, K150
SEQUENCE:0
SUMMARY:Engineering Seminar: On Models and Numerical Schemes for Nematic Li
 quid Crystals and Their Applications
UID:tag:localist.com\,2008:EventInstance_50729687295086
URL:https://calendar.unt.edu/event/es-202510031100
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