Jove
Visualize
Contact Us
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

Related Experiment Videos

Electro-optic response and switchable Bragg diffraction for liquid crystals in colloid-templated materials.

P Mach1, P Wiltzius, M Megens

  • 1Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6396, USA. petermach@lucent.com

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|March 23, 2002
PubMed
Summary
This summary is machine-generated.

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

Nucleation kinetics and virtual melting in shear-induced structural transitions.

Reports on progress in physics. Physical Society (Great Britain)·2024
Same author

Morphology and line tension of twist disclinations in a nematic liquid crystal.

Soft matter·2024
Same author

Propagation of extended fractures by local nucleation and rapid transverse expansion of crack-front distortion.

Nature physics·2024
Same author

Magnetic-field-driven director configuration transitions in radial nematic liquid crystal droplets.

Physical review. E·2023
Same author

Direction-dependent dynamics of colloidal particle pairs and the Stokes-Einstein relation in quasi-two-dimensional fluids.

Nature communications·2023
Same author

Depletion-driven antiferromagnetic, paramagnetic, and ferromagnetic behavior in quasi-two-dimensional buckled colloidal solids.

The Journal of chemical physics·2023

We studied how nematic liquid crystals switch in self-assembled colloid structures. Liquid crystals in connected networks showed different optical switching behavior than those in isolated cavities.

Area of Science:

  • Materials Science
  • Optoelectronics
  • Colloid Science

Background:

  • Nematic liquid crystals (LCs) are widely used in electro-optic devices.
  • Self-assembled colloids offer unique structures for material integration.
  • Understanding LC behavior in confined geometries is crucial for advanced applications.

Purpose of the Study:

  • To investigate the electro-optic switching of nematic liquid crystals within self-assembled colloid structures.
  • To compare the optical responses of LCs in different colloidal architectures.
  • To analyze the influence of network connectivity on LC switching dynamics.

Main Methods:

  • Incorporation of nematic liquid crystals into colloid-templated polymers and interstitial spaces of colloid crystals.
  • Characterization of Bragg diffraction changes under applied electric fields.

Related Experiment Videos

  • Measurement of optical switching times for various LC/colloid composite structures.
  • Comparison with conventional polymer-dispersed liquid crystals (PDLCs).

    • Main Results:

    • Qualitative differences in electro-optic response were observed between LCs in connected colloidal networks and those in isolated cavities.
    • Bragg diffraction patterns varied significantly with applied electric fields in the templated composites.
    • Switching times were measured and correlated with the structural arrangement of the liquid crystal within the colloid templates.

    Conclusions:

    • The connectivity of the colloidal structure significantly impacts the electro-optic switching behavior of incorporated nematic liquid crystals.
    • Colloid-templated structures provide a novel platform for controlling and enhancing LC electro-optic properties.
    • These findings suggest new possibilities for designing advanced optical switching materials based on structured colloids.