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RESEARCH PRODUCT
Tuneable multicoloured patterns from photonic cross-communication between cholesteric liquid crystal droplets
Junghyun NohHsin-ling LiangJan P. F. LagerwallIrena Drevenšek-olenikIrena Drevenšek-oleniksubject
Total internal reflectionMaterials scienceCholesteric liquid crystalbusiness.industryPhysics::OpticsGeneral ChemistryPhysics::Fluid DynamicsOpticsLiquid crystalMonodisperse dropletsMaterials ChemistryOptoelectronicsSelective reflectionPhotonicsbusinessOmnidirectional antennadescription
Monodisperse droplets of planar-aligned cholesteric (N*) liquid crystal exhibit an intriguing capacity for photonic cross-communication, giving rise to colourful patterns that depend sensitively on the N* pitch, droplet positions and illuminated area. The phenomenon results from a combination of omnidirectional selective reflection of N* droplets—which thus act as spherically symmetric self-assembled photonic crystals—and total internal reflection at the continuous phase surface. We outline how the unique optical properties can be employed in numerous applications.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2014-01-01 | J. Mater. Chem. C |