Jove
Visualize
Contact Us

Related Experiment Videos

Computer simulations of bent-core liquid crystals.

Alastair Dewar1, Philip J Camp

  • 1School of Chemistry, The University of Edinburgh, West Mains Road, Edinburgh EH9 3JJ, United Kingdom.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|August 25, 2004
PubMed
Summary

Computer simulations reveal how molecular shape influences liquid crystal phases. Bent-core molecules, unlike linear ones, exhibit enhanced nematic phase stability and tilted smectic phases, mimicking real bent-core liquid crystals.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Effect of Pressure on Liquid-Phase Adsorption on a Solid Surface.

Langmuir : the ACS journal of surfaces and colloids·2026
Same author

Experimental and simulation study of reverse micelles formed by aerosol-OT and water in non-polar solvents.

Physical chemistry chemical physics : PCCP·2024
Same author

Dynamics of magnetization growth and relaxation in ferrofluids.

Physical review. E·2024
Same author

Structure and dynamics in suspensions of magnetic platelets.

Nanoscale·2024
Same author

Polymeric surfactants at liquid-liquid interfaces: Dependence of structural and thermodynamic properties on copolymer architecture.

The Journal of chemical physics·2024
Same author

Experimental and simulation study of self-assembly and adsorption of glycerol monooleate in <i>n</i>-dodecane with varying water content onto iron oxide.

Nanoscale·2024
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Computational Chemistry

Background:

  • Liquid crystals exhibit diverse phases controlled by molecular structure.
  • Bent-core molecules are of interest due to their unique phase behaviors.
  • Understanding molecular shape effects is crucial for designing new liquid crystal materials.

Purpose of the Study:

  • To investigate the phase behavior of model linear and bent-core molecules using computer simulations.
  • To explore the influence of molecular geometry (bond angle) on liquid crystal phase formation.
  • To compare simulation results with experimental observations of bent-core liquid crystals.

Main Methods:

  • Isothermal-isobaric Monte Carlo computer simulations.
  • Utilized a molecular model of seven Lennard-Jones spheres in a V-shape.

Related Experiment Videos

  • Varied the external bond angle (gamma) to represent linear (gamma=0) and bent-core (gamma=20, 40 degrees) molecules.

    • Main Results:

    • Linear molecules (gamma=0) showed isotropic, nematic, smectic A, and two tilted layered phases (assigned as smectic B and crystal).
    • Bent-core molecules (gamma=20) exhibited isotropic, nematic, and tilted smectic B phases, with an enhanced nematic range.
    • Increasing temperature in tilted phases showed a transition from smectic B to smectic A ordering; molecular tilt was ~30 degrees.

    Conclusions:

    • Molecular geometry significantly impacts liquid crystal phase behavior, including nematic range and tilted phase formation.
    • The simulation model captures key aspects of real bent-core liquid crystal behavior, such as molecular tilt.
    • The tilt in bent-core molecules facilitates efficient packing and favorable intermolecular interactions.