title: Tuning of photonic bandgaps by a field-induced structural change of fractal metamaterials.
abstract: Bandgaps of a structure with electrorheological fluids sandwiched between planar metallic fractal electrodes are investigated in the microwave regime. Our results show that bandgaps are tunable as a result of the electrorheological effect induced by the external electric field applied directly to the structure. A finite-difference time-domain simulation reveals that the tunability of bandgaps is not related to the average dielectric constant but is caused by the field-induced structural change in the electrorheological fluids.
authors.forename: Bo
authors.initials: B
authors.lastname: Hou
authors.forename: Gu
authors.initials: G
authors.lastname: Xu
authors.forename: Hon
authors.initials: H
authors.lastname: Wong
authors.forename: Weijia
authors.initials: W
authors.lastname: Wen