2D and 3D electrically switchable hexagonal photonic crystal in the ultraviolet range |
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| Authors: | X Sun X Tao T Ye P Xue Y-S Szeto |
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| Institution: | (1) Nanotechnology Centre for Functional and Intelligent Textiles and Clothing, Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, P.R. China |
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| Abstract: | Two holographic lithography systems are demonstrated for easy and large-area fabrication of 2D and 3D photonic crystal (PhC)
microstructures in a polymer dispersed liquid crystal (PDLC) by applying a single top-cut hexagon prism. A six-beam system
has been used to produce 2D hexagonal PhCs. By adding an additional mirror, a twelve-beam system is demonstrated to fabricate
3D PhCs with ultraviolet (UV) band-gap along the z direction. A good agreement is obtained for measured PhCs structure and
theoretical results. Far-field diffraction patterns and electrical switching characteristics of the 2D and 3D PhC HPDLC films
have been investigated.
PACS 42.15.Eq; 42.40.Eq |
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