Title :
Electric control of reflection in metamaterial — Twisted nematics liquid crystal cell structure
Author :
Lee, Y.U. ; Kim, Jung-Ho ; Woo, J.H. ; Choi, E. ; Kim, Eun Sok ; Wu, J.W.
Author_Institution :
Dept. of Phys., Ewha Women´s Univ., Seoul, South Korea
Abstract :
We fabricated an electrically tunable metamaterial based on twisted nematics liquid crystal cell, where polarization dependent reflectance of the metamaterial can be controlled via applied voltage. When the metamaterial-twisted nematics liquid crystal cell is driven with a voltage above the threshold, optical reflection of the cell has changed. Our result provides the possibility of tuning the frequency selective properties of metamaterials by applied voltage.
Keywords :
electro-optical effects; light reflection; nematic liquid crystals; optical fabrication; optical metamaterials; optical tuning; electric control; electrically tunable metamaterial; frequency selective properties; metamaterial-twisted nematics liquid crystal cell; optical reflection; polarization dependent reflectance; twisted nematics liquid crystal; Couplings; Electric fields; Magnetic materials; Metamaterials; Reflection; Substrates; Threshold voltage;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2013 Conference on
Conference_Location :
San Jose, CA
