Thin-film color reflectors inspired by Morpho butterflies are fabricated. Using a combination of directional deposition, silica microspheres with a wide size distribution, and a PDMS (polydimethylsiloxane) encasing, a large, flexible reflector is created that actually provides better angle-independent color characteristics than Morpho butterflies and which can even be bent and folded freely without losing its Morpho-mimetic photonic properties.

Easy does it: Poly(3,4‐ethylenedioxythiophene) (PEDOT) fibers can be synthesized from aqueous solutions of anionic surfactant by a self‐assembly method. This approach readily generates nanofibers with diameters down to about 10 nm and lengths of over 5 μm (see TEM image). The fibers can be produced with high yields and exhibit electrical conductivities of approximately 46 S cm−1.

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An electrically tunable photonic crystal is developed utilizing crystalline colloidal arrays of high refractive index particles. Through modulation of the refractive index of the particle, and the applied electric field, both the bandwidth and position of the photonic bandgap could be tuned. Full color modulation with high optical quality is achieved, which paves a way to develop a novel reflective display.