Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2001-07-02
Physics
Condensed Matter
Soft Condensed Matter
Scientific paper
10.1103/PhysRevE.65.010702
We calculate the photonic band structure at normal incidence of highly deformable, self-assembling systems - cholesteric elastomers subjected to external stress. Cholesterics display brilliant reflection and lasing owing to gaps in their photonic band structure. The band structure of cholesteric elastomers varies sensitively with strain, showing new gaps opening up and shifting in frequency. A novel prediction of a total band gap is made, and is expected to occur in the vicinity of the previously observed de Vries bandgap, which is only for one polarisation.
Bermel Peter A.
Warner Mark
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