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.
Inspec keywords: nanotechnology; biosensors; surface plasmon resonance; optical tuning; polaritons
Other keywords:
Subjects: Nanotechnology applications in biomedicine; Polaritons; Biosensors; Optical properties of metals and metallic alloys (thin films, low-dimensional and nanoscale structures); Collective excitations (surface states)
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