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Boosting Optical Nanocavity Coupling by Retardation Matching to Dark Modes
Rohit Chikkaraddy, Junyang Huang, Dean Kos +5
Plasmonic nano-antennas can focus light to nanometre length-scales providing intense field enhancements. For the tightest optical confinements (0.5-5 nm) achieved in plasmonic gaps…
Mid-infrared-perturbed Molecular Vibrational Signatures in Plasmonic Nanocavities
Rohit Chikkaraddy, Angelos Xomalis, Lukas A. Jakob +1
Recent developments in surface-enhanced Raman scattering (SERS) enable observation of single-bond vibrations in real-time at room temperature. By contrast, mid-infrared (MIR) vibra…
Accessing Plasmonic Hotspots using Nanoparticle-on-Foil Constructs
Rohit Chikkaraddy, Jeremy J Baumberg
Metal-insulator-metal (MIM) nanogaps in canonical nanoparticle-on-mirror geometry (NPoM) provide deep-subwavelength confinement of light with mode volumes smaller than …
Plasmonic nanocavity modes: From near-field to far-field radiation
Nuttawut Kongsuwan, Angela Demetriadou, Matthew Horton +3
In the past decade, advances in nanotechnology have led to the development of plasmonic nanocavities which facilitate light-matter strong coupling in ambient conditions. The most r…
Large-scale dynamic assembly of metal nanostructures in plasmofluidic field
Partha Pratim Patra, Rohit Chikkaraddy, Sreeja Thampi +2
We discuss two aspects of the plasmofluidic assembly of plasmonic nanostructures at the metal fluid interface. First, we experimentally show how three and four spot evanescent wave…
Plasmofluidic Single-Molecule Surface Enhanced Raman Scattering from Dynamic Assembly of Plasmonic Nanoparticles
Partha Pratim Patra, Rohit Chikkaraddy, Ravi P. N. Tripathi +2
Single-molecule surface enhanced Raman scattering (SM-SERS) is one of the vital applications of plasmonic nanoparticles. The SM-SERS sensitivity critically depends on plasmonic hot…