1 December 2018, Volume 8, Issue 12, pp. 3622-3966
31 articles
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A spiropyran doped polymer dispersed cholesteric liquid crystal (SPCLC) film based rewritable medium can produce high quality visual two-dimensional barcodes for anti-counterfeiting, authentication and security purposes. This image shows an optical microscope image of an SPCLC film. See Petriashvili et al. Optical Materials Express 8, 3708-3716 (2018).
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