Mathias Kolle, Alfred Lethbridge, Moritz Kreysing, Jeremy J. Baumberg, Joanna Aizenberg and Peter Vukusic Bio-Inspired Band-Gap Tunable Elastic Optical Multilayer Fibers Advanced Materials 25
The concentrically-layered photonic structure found in the tropical fruit Margaritaria nobilis serves as inspiration for photonic fibers with mechanically tunable band-gap. The fibers show the spectral filtering capabilities of a planar Bragg stack while the microscopic curvature decreases the strong directional chromaticity associated with flat multilayers. Elongation of the elastic fibers results in a shift of the reflection of over 200 nm.
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