|Title||Tuned permeability in terahertz split-ring resonators for devices and sensors|
|Publication Type||Journal Article|
|Year of Publication||2007|
|Authors||T.. Driscoll, G..O. Andreev, D.N. Basov, S.. Palit, S..Y. Cho, N.M. Jokerst, D.R. Smith|
|Journal||Applied Physics Letters|
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.