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Liquid crystal metamaterials from nematic colloidal platelets

Presented by: 
Anja Pusovnik University of Ljubljana
Date: 
Wednesday 15th May 2019 - 10:20 to 10:40
Venue: 
INI Seminar Room 1
Abstract: 
Metamaterials are artificial materials with properties otherwise not existing in nature. This is achieved through the design of its constituent building blocks, which are generally several times smaller than the operating wavelength. An interesting route for the fabrication of photonic metamaterials is their self-assembly in liquid crystals. Here, we firstly determine the optimal geometrical parameters of a single split ring resonator (SRR) colloidal particle in order to achieve the stability of the 2D and 3D SRR structures in liquid crystals using free energy calculations. Then we focus on the optical response of such a composed material, notably the resonances in the transmissivity spectra, and tunability of optical properties of the SRR colloidal crystal with external fields.
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University of Cambridge Research Councils UK
    Clay Mathematics Institute London Mathematical Society NM Rothschild and Sons