Tuned permeability in terahertz split-ring resonators for devices and sensors
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 0.03THz. 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.
- Publication:
-
Applied Physics Letters
- Pub Date:
- August 2007
- DOI:
- 10.1063/1.2768300
- Bibcode:
- 2007ApPhL..91f2511D