Driven by applications in chemical sensing, biological imaging and material
characterisation, Raman spectroscopies are attracting growing interest from a variety of …

Ultrathin dielectric gaps between metals can trap plasmonic optical modes with surprisingly
low loss and with volumes below 1 nm3. We review the origin and subtle properties of these …

The present status and development of strong-field nano-optics, an emerging field of
nonlinear optics, is discussed. A nonperturbative regime of light-matter interactions is …

This review discusses a relatively new technique for optical nanoimaging at visible
wavelength, known as tip-enhanced Raman spectroscopy (TERS). This technique relies on …

Raman spectroscopy is an increasingly popular technique in many areas, including biology
and medicine. It is based on Raman scattering, a phenomenon in which incident photons …

Recent years have seen a rapid expansion of research into nanophotonics based on
surface plasmon–polaritons. These electromagnetic waves propagate along metal …

Metallic nanostructures possess plasmonic resonances that spatially confine light on the
nanometre scale. In the ultimate limit of a single nanostructure, the electromagnetic field can …

A review of nanoplasmonics is given. This includes fundamentals, nanolocalization of
optical energy and hot spots, ultrafast nanoplasmonics and control of the spatiotemporal …

An analytical technique operating at the nanoscale must be flexible regarding variable
experimental conditions while ideally also being highly specific, extremely sensitive, and …

Surface plasmon polaritons (SPPs) are spatially confined electromagnetic field modes at a
metal-dielectric interface capable of generating intense near-field optical forces on ultrafast …