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Tuning the Photonic Bandgap Properties of Crystalline Arrays of Polystyrene Beads by Annealing at Elevated Temperatures
Author(s) -
Gates B.,
Park S. H.,
Xia Y.
Publication year - 2000
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/(sici)1521-4095(200005)12:9<653::aid-adma653>3.0.co;2-3
Subject(s) - materials science , polystyrene , photonic crystal , annealing (glass) , photonic bandgap , band gap , optoelectronics , shrinkage , photonics , composite material , polymer
A 3D photonic crystal that operates in the visible regime is presented. The bandgap properties of this photonic crystal, fabricated from ∼230 nm polystyrene beads, can be tuned in a controllable way by annealing the sample at elevated temperatures (see Figure). It is demonstrated that shrinkage and a change in the shape of the beads are responsible for the change in bandgap properties.