Spectral tuning of localised surface plasmon-polariton resonance in metallic nano-crescents.
The utilisation of plasmonic effects in metallic nanostructures is gaining importance for applications in molecular sensing. Of special interest is the local field enhancement effect, which enables surface-enhanced Raman scattering and significantly boosts the sensitivity of the Raman technique. For in vivo biological research, the ability to excite the resonance of localised surface plasmon-polaritons within the biological window is often desired. A new nanostructure called the nano-crescent is introduced and exhibits strong plasmonic activities within the biological window using a novel intra-particle plasmonic coupling scheme.
Kim
J
J
Biomolecular Nanotechnology Center, Berkeley, USA.
Liu
G L
GL
Lu
Y
Y
Lee
L P
LP
D003198:Computer Simulation; D020342:Finite Element Analysis; D008670:Metals / Q000737:chemistry; D049329:Nanostructures / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods*; D012680:Sensitivity and Specificity; D013059:Spectrum Analysis, Raman / Q000295:instrumentation / Q000379:methods*; D020349:Surface Plasmon Resonance
D008670:Metals