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 Video

Updated: Jun 10, 2026

An Electrochemical Cholesteric Liquid Crystalline Device for Quick and Low-Voltage Color Modulation
10:33

An Electrochemical Cholesteric Liquid Crystalline Device for Quick and Low-Voltage Color Modulation

Published on: February 27, 2019

Long-pitch cholesteric liquid crystal cell for switchable achromatic reflection.

Ki-Han Kim1, Hye-Jung Jin, Kyoung-Ho Park

  • 1School of Electrical Engineering, Pusan National University, Busan 609-735, Korea.

Optics Express
|August 20, 2010
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

Comparison of Test-Retest Reliability of Sound Field Audiometry Between a Newly Designed System for Small Audiometric Booths and a Conventional Sound Field System.

Journal of clinical medicine·2026
Same author

Harnessing Ammonia as a Hydrogen Carrier for Integrated CO<sub>2</sub> Capture and Reverse Water-Gas Shift.

ACS applied materials & interfaces·2024
Same author

New linear solvation energy relationships for empirical solvent scales using the Kamlet-Abboud-Taft parameter sets in nematic liquid crystals.

RSC advances·2022
Same author

Early experience of laparoscopic resection and comparison with open surgery for gastric gastrointestinal stromal tumor: a multicenter retrospective study.

Scientific reports·2022
Same author

Development of AE147 Peptide-Conjugated Nanocarriers for Targeting uPAR-Overexpressing Cancer Cells.

International journal of nanomedicine·2021
Same author

Self-Regulation of Infrared Using a Liquid Crystal Mixture Doped with Push-Pull Azobenzene for Energy-Saving Smart Windows.

ACS applied materials & interfaces·2021

We developed a novel switchable achromatic reflector using cholesteric liquid crystals (CLCs). This device offers efficient infrared reflection and visible transparency, operating at low voltage for potential use in displays and light shutters.

Area of Science:

  • Optics and Photonics
  • Materials Science
  • Liquid Crystal Displays

Background:

  • Conventional achromatic reflectors often suffer from narrow bandwidth or high operating voltages.
  • Cholesteric liquid crystals (CLCs) offer tunable optical properties based on their helical structure.
  • Achieving broadband reflection with stable, low-voltage liquid crystal devices remains a challenge.

Purpose of the Study:

  • To propose and demonstrate a switchable achromatic reflector utilizing a long-pitch cholesteric liquid crystal (CLC).
  • To achieve infrared Bragg reflection while maintaining visible transparency.
  • To develop a low-voltage, low-power device suitable for optical applications.

Main Methods:

  • Designing a long-pitch CLC with a Bragg reflection wavelength in the infrared region.

More Related Videos

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets
06:26

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets

Published on: May 15, 2017

High-Contrast and Fast Photorheological Switching of a Twist-Bend Nematic Liquid Crystal
06:24

High-Contrast and Fast Photorheological Switching of a Twist-Bend Nematic Liquid Crystal

Published on: October 31, 2019

Related Experiment Videos

Last Updated: Jun 10, 2026

An Electrochemical Cholesteric Liquid Crystalline Device for Quick and Low-Voltage Color Modulation
10:33

An Electrochemical Cholesteric Liquid Crystalline Device for Quick and Low-Voltage Color Modulation

Published on: February 27, 2019

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets
06:26

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets

Published on: May 15, 2017

High-Contrast and Fast Photorheological Switching of a Twist-Bend Nematic Liquid Crystal
06:24

High-Contrast and Fast Photorheological Switching of a Twist-Bend Nematic Liquid Crystal

Published on: October 31, 2019

  • Utilizing two stable CLC textures: planar (transparent) and focal conic (scattering).
  • Characterizing the optical properties and operating voltage of the CLC device.

    • Main Results:

    • The proposed CLC device exhibits transparency across the visible spectrum in its planar texture.
    • Achromatic reflection is achieved via light scattering from the focal conic texture.
    • Both textures are stable at zero electric field, and the device operates at significantly lower voltages than conventional CLCs.

    Conclusions:

    • A novel, low-voltage switchable achromatic reflector based on long-pitch CLCs has been successfully demonstrated.
    • The device's ability to switch between infrared reflection and visible transparency makes it suitable for reflective displays and light shutters.
    • Enhancing scattering efficiency through coupling with a reflective polarizer is a promising avenue for further improvement.