Influence of chemical functionalization on the plasmon properties of metallodielectric gratings and nanoshells
Abstract
We have developed a method of fabricating long-range, planar arrays of discrete, submicron gold or silver lines or islands on glass or SiO2/Si surfaces without the use of resist masks or chemical etching. These arrays of metal nanostructures support surface plasmon (SP) propagation and also show plasmon-plasmon interactions dependent on the geometry of the metal features. We have used these structures to investigate the effects of molecular functionalization on the excitation and propagation properties of the SPs that can be supported by this geometry. We have observed distinct variations in the dispersion and energy gaps of SPs on these structures due to chemical functionalization of the metal structures. We can also compare the SP properties of metallodielectric gratings with that of metal nanoshells which exhibit size-dependent sensitivity.
- Publication:
-
APS March Meeting Abstracts
- Pub Date:
- March 2003
- Bibcode:
- 2003APS..MARS11007M