Light and symmetry study may offer opportunities for anti-counterfeiting

Phys.org  November 29, 2024
An international team of researchers (the Netherlands, Greece) investigated the effect of a mirror-symmetry plane in multiple-scattering media under plane-wave illumination along the symmetry plane. Designed and fabricated samples’ optical transport properties were compared quantitatively with three-dimensional modeling. Strong polarization-dependent deviations of the bulk speckle-averaged intensity distribution at the symmetry plane showed either up to a factor 2 enhancement or complete suppression of the ensemble-averaged intensities. According to the researchers their work could have application in counterfeiting… read more. TECHNICAL ARTICLE

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