Dimitrios Zografopoulos

Consiglio Nazionale delle Ricerche, Istituto per la Microelettronica e Microsistemi (CNR-IMM), Roma 00133, Italy

Liquid-crystal tunable devices: from fiber optics to terahertz metamaterials



Liquid crystals (LC) are a special class of organic materials whose properties lie between those of liquids and solid crystals. Boosted by their large inherent anisotropy and owing to their ability to respond to externally applied stimuli, such as electric or magnetic fields, LCs have been intensively investigated as the key-material in dynamically tunable devices operating from the visible down to the microwave frequency spectrum.

In this talk, we review a wide range of LC-tunable components that span from LC-infiltrated photonic crystal fibers, planar photonic/plasmonic waveguides, and switchable bistable beam steerers/polarizers, to dynamically tunable metamaterials and perfect absorbers at terahertz frequencies. The fundamental aspects of LC technology are discussed and special attention is paid to how the enhanced light-matter interaction between LCs and electromagnetic waves can lead to the design of novel devices with unprecedented tunability of their properties

Date: 4/2/2016
Time:11:00 (coffee & cookies will be served at 00:00)
Place:FORTH Seminar Room 1