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Diamond‐Structured Titania Photonic‐Bandgap Crystals from Biological Templates
Author(s) -
Galusha Jeremy W.,
Jorgensen Matthew R.,
Bartl Michael H.
Publication year - 2010
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200902852
Subject(s) - photonic crystal , materials science , diamond , band gap , photonics , yablonovite , optoelectronics , reflection (computer programming) , template , dielectric , replica , nanotechnology , optics , photonic integrated circuit , computer science , physics , composite material , programming language , art , visual arts
Photonic crystal scales with a diamond‐based lattice from the weevil Lamprocyphus augustus are transformed into a high‐dielectric titania replica by a biotemplating double‐imprint route. Multidirectional optical reflectance spectroscopy of the replicated structure gives an angle‐independent reflection band in the visible spectrum, in agreement with photonic band structure calculations, which reveal the formation of a complete photonic bandgap at visible frequencies.