9 Light reconfigurable chiral liquid crystal superstructure for dynamic diffraction manipulations

Le résumé fourni par la source

Liquid crystal has attracted sufficient attentions in the sciences and industries due to the booming development of liquid crystal display in the recent 20 years. The specific anisotropy and stimuli-responsiveness of liquid crystal enables a wide range applications not only in display but diverse potentials in optics and photonics. Recently, the chiral liquid crystals, having a twisted helical self-organized superstructure with a pitch which is comparable to the scale of light wavelength, exhibit a fantastic effect as a soft photonic crystal, and thus inspire a broader and respective application in integrated optical system and photonics on a chip. The diffraction device is ubiquitous in various optical systems. On the other aspect, the light controllable diffraction device plays an irreplaceable role in the all-optical system which is one of the vital part in photonics on a chip. Chiral liquid crystal with a self-organized superstructure as well as stimuli-responsiveness under light irradiation is an appropriate and preferable material for realizing the attribute of light manipulation. However, a comprehensive review on the relevant topic is insufficient and even rarely, therefore the proposed chapter herein is necessary and will provide a new concept and insight as a kind of nonconventional liquid crystals.

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