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  1. Article

    Open Access

    Unclonable human-invisible machine vision markers leveraging the omnidirectional chiral Bragg diffraction of cholesteric spherical reflectors

    The seemingly simple step of molding a cholesteric liquid crystal into spherical shape, yielding a Cholesteric Spherical Reflector (CSR), has profound optical consequences that open a range of opportunities for p...

    Hakam Agha, Yong Geng, Xu Ma, Deniz Işınsu Avşar in Light: Science & Applications (2022)

  2. Article

    Open Access

    Robust cholesteric liquid crystal elastomer fibres for mechanochromic textiles

    Mechanically responsive textiles have transformative potential in many areas from fashion to healthcare. Cholesteric liquid crystal elastomers have strong mechanochromic responses that offer attractive opportu...

    Yong Geng, Rijeesh Kizhakidathazhath, Jan P. F. Lagerwall in Nature Materials (2022)