Multicolor Pattern Generation in Photonic Bandgap Composites


  • The authors thank DARPA (Grant Number: N66001-01-1-8938) and the National Science Foundation through a CAREER award (Grant No. DMR-0236692) (SHF) for financial support.


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The generation of complex, permanent, multicolor patterns in photonic bandgap films is demonstrated. The procedure allows for the overall spatial control of the reflected color on the surface of a photonic crystal, as well as the ability to define the visible or near-IR response of a patterned region through control of the stop-band wavelength. For example, the attached image presents a 10 mm wide, orange, “tiger paw” insignia templated on a green background. See also inside front cover.