Bio-Inspired Band-Gap Tunable Elastic Optical Multilayer Fibers.

Harvard University, School of Engineering and Applied Sciences, 9 Oxford Street, Cambridge, MA-02138, USA. .
Advanced Materials (Impact Factor: 15.41). 01/2013; DOI: 10.1002/adma.201203529
Source: PubMed

ABSTRACT 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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