Tuned permeability in terahertz split-ring resonators for devices and sensors

TitleTuned permeability in terahertz split-ring resonators for devices and sensors
Publication TypeJournal Article
Year of Publication2007
AuthorsT.. Driscoll, G..O. Andreev, D.N. Basov, S.. Palit, S..Y. Cho, N.M. Jokerst, D.R. Smith
JournalApplied Physics Letters
Volume91
Issue6
ISBN Number0003-6951
Accession NumberWOS:000248661400084
Abstract

A process is demonstrated for tuning the magnetic resonance frequency of a fixed split-ring resonator array, by way of adding material near the split-ring elements. Applying drops of a silicon-nanospheres/ethanol solution to the surface of the sample decreases the magnetic resonance frequency of the split-ring array in incremental steps of 0.03 THz. This fine tuning is done post fabrication and is demonstrated to be reversible. The exhibited sensitivity of the split-ring resonance frequency to the presence of silicon nanospheres also suggests further application possibilities as a sensor device. (c) 2007 American Institute of Physics.