15 February 2017 Cholesteric microlenses and micromirrors in the beetle cuticle and in synthetic oligomer films: a comparative study
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Abstract
The polygonal texture in cholesteric liquid crystals consist in an array of contiguous polygonal cells. The optical response and the structure of polygonal texture are investigated in the cuticle of beetle Chrysina gloriosa and in synthetic oligomer films. In the insect carapace, the polygons are concave and behave as spherical micro-mirrors whereas they are convex and behave as diverging microlenses in synthetic films. The characteristics of light focusing (spot, donut or continuum background) are highly tunable with the wavelength and the polarization of the incident light.
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Gonzague Agez, Chloé Bayon, Michel Mitov, "Cholesteric microlenses and micromirrors in the beetle cuticle and in synthetic oligomer films: a comparative study", Proc. SPIE 10125, Emerging Liquid Crystal Technologies XII, 101250U (15 February 2017); doi: 10.1117/12.2260752; https://doi.org/10.1117/12.2260752
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