Publication Type
Journal
Journal Name
Nano Letters
Publication Date
Page Numbers
1265 to 1269
Volume
11
Issue
3
Abstract
We demonstrate active control of the plasmonic response from Au nanostructures by the use of a novel multiferroic substrate –LuFe2O4 (LFO) – to tune the surface enhanced Raman scattering (SERS) response in real time. From both experiments and numerical simulations based on the finite-difference time-domain method, a threshold field is observed, above which the optical response of the metal nanostructure can be strongly altered through changes in the dielectric properties of LFO. This offers the potential of optimizing the SERS detection sensitivity in real-time as well as the unique functionality of detecting multiple species of Raman active molecules with the same template.
