Open AccessScalable nanofabrication of U-shaped nanowire resonators with tunable optical magnetism
Author(s) -
Fan Zhang,
Chen Wang,
Biqin Dong,
Xiangfan Chen,
Zhen Zhang,
Cheng Sun
Publication year - 2016
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.006367
Subject(s) - magnetism , resonator , metamaterial , split ring resonator , nanolithography , materials science , nanowire , optoelectronics , nanotechnology , optics , fabrication , physics , condensed matter physics , medicine , alternative medicine , pathology
Split ring resonators have been studied extensively in reconstituting the diminishing magnetism at high electromagnetic frequencies in nature. However, breakdown in the linear scaling of artificial magnetism is found to occur at the near-infrared frequency mainly due to the increasing contribution of self-inductance while reducing dimensions of the resonators. Although alternative designs have enabled artificial magnetism at optical frequencies, their sophisticated configurations and fabrication procedures do not lend themselves to easy implementation. Here, we report scalable nanofabrication of U-shaped nanowire resonators (UNWRs) using the high-throughput nanotransfer printing method. By providing ample area for conducting oscillating electric current, UNWRs overcome the saturation of the geometric scaling of the artificial magnetism. We experimentally demonstrated coarse and fine tuning of LC resonances over a wide wavelength range from 748 nm to 1600 nm. The added flexibility in transferring to other substrates makes UNWR a versatile building block for creating functional metamaterials in three dimensions.