Electromagnetic absorbers have drawn increasing attention in many areas. A series of
plasmonic and metamaterial structures can work as efficient narrowband absorbers due to …

Nanofocusing of electromagnetic radiation, that is, reducing the cross sections of
propagating optical modes far beyond the diffraction limit in dielectric media, can be …

Surface-enhanced Raman scattering (SERS) is an ultrasensitive spectroscopic technique
that can identify materials and chemicals based on their inelastic light-scattering properties …

Excitation of localized and delocalized surface plasmon resonances can be used for turning
excellent reflectors of visible light, such as gold and silver, into efficient absorbers, whose …

Focusing light at sub-wavelength region opens up interesting applications in optical sensing
and imaging beyond the diffraction limit. In the past, tapered Au wires with carved gratings …

We have recently reported broadband (450–850 nm) and efficient (96% on average) light
absorption on gold surfaces with arrays of ultra-sharp convex grooves via excitation and …

We investigate field enhancements by one-dimensional periodic arrays of tapered slits
fabricated to a high quality (nm precision) using focused ion beam milling in a 180 nm-thick …

We investigate the scattering properties of two-dimensional high-aspect-ratio metal trenches
acting as resonators for gap-surface plasmons and show that these resonators are highly …

Plasmonic tapered grooves have been proven to be good candidates for the excitation of
gap surface plasmons (GSPs), surface plasmons trapped vertically inside a metallic tapered …

We image the gigahertz vibrational modes of a plasmonic–phononic crystal at sub-micron
resolution by means of an ultrafast optical technique, using a triangular array of spherical …