Concept of chiral image storage and selection based on liquid crystals by circular polarization

Sang Hyun Lee, Sin Hyung Lee, Se Um Kim, Sujie Kang, Sin Doo Lee

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


We demonstrate a liquid crystal (LC)-based optical device with the polarization switching capability, which can store two different chiral images to be selected according to the polarization state of the viewing polarizer. The chiral dual-image device consists of chiral surface patterns for image storage and the LC layer as a tunable phase retarder. Each chiral surface pattern behaves as a helical photonic crystal that reflects circularly polarized light at a specific wavelength. Depending on the applied voltage across the LC layer, either a right-handed or a left-handed circular polarization image appears, and thus one of the two stored images can be selectively read by the polarization state. Our concept of the LC-based chiral image storage and selection provides simplicity in fabrication, flexibility in design, and high optical efficiency. It will be directly applicable for reflective-type 3D displays, color filters, and anti-counterfeiting devices.

Original languageEnglish
Pages (from-to)11661-11672
Number of pages12
JournalOptics Express
Issue number8
StatePublished - 15 Apr 2019


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