Open AccessElectrically reconfigurable split ring resonator covered by nematic liquid crystal droplet
Author(s) -
Kepeng Qiu,
Ning Jia,
Zijun Liu,
Chi Wu,
Yuancheng Fan,
Quanhong Fu,
Fuli Zhang,
Weihong Zhang
Publication year - 2016
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.027096
Subject(s) - liquid crystal , materials science , resonator , biasing , optics , split ring resonator , capacitance , electric field , voltage , optoelectronics , resonance (particle physics) , phase (matter) , electrode , physics , atomic physics , quantum mechanics
In this paper, an electrically reconfigurable split ring resonator (SRR) covered by sessile droplet of nematic liquid crystal (LC) is demonstrated experimentally. The magnetic resonance of single SRR decreases gradually by 237 MHz as external bias voltage is applied, resulting from increasing fringing capacitance due to liquid crystal molecular reorientation along local electric field distribution. The transmission phase can be modulated by more than 100 degrees. Furthermore, frequency tuning range of SRR increases with the droplet height, because of the significant enhancement for SRR capacitance difference between LC states with/without bias voltage. This work will be of interest for the development of reconfigurable metasurface and related application.