Science
A display that completely blocks off counterfeits – EurekAlert
POSTECH research team led by Professor Junsuk Rho develops nanostructures capable of polarized optical encryption.
IMAGE: Schematic illustration of switchable metasurfaces
Full-color image is switched on (top) and concealed (bottom) by the polarization angle (0° and 90°) of the incident light, making it applicable to cryptography….
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Credit: POSTECH
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