Anti-counterfeiting holographic liquid crystal gels with color and pattern control
Kyung Min Lee, Victor Reshetnyak, Cedric P. Ambulo, Zachary M. Marsh, Michael E. McConney, Nicholas P. Godman
Abstract
Optically tunable and switchable reflection grating LC gels can be used in anti-counterfeiting materials for optical security and encryption. Reflection colors and patterns appear by applying an AC field and a DC field controls the holographic color of the samples.
Topics & Concepts
HolographyReflection (computer programming)Materials scienceEncryptionOpticsLiquid crystalGratingField (mathematics)OptoelectronicsStructural colorationComputer sciencePhysicsComputer securityPhotonic crystalMathematicsPure mathematicsProgramming languageLiquid Crystal Research AdvancementsOrbital Angular Momentum in OpticsAdvanced Optical Imaging Technologies