The interaction between molecular electronic transitions and electromagnetic fields can be
enlarged to the point where distinct hybrid light–matter states, polaritons, emerge. The …

Conspectus Molecular vibrations constitute one of the smallest mechanical oscillators
available for micro-/nanoengineering. The energy and strength of molecular oscillations …

Room-temperature detection of molecular vibrations in the mid-infrared (MIR, λ= 3–30 µm)
has numerous applications, including real-time gas sensing, medical imaging and quantum …

Here we present a roadmap on Photonic metasurfaces. This document consists of a number
of perspective articles on different applications, challenge areas or technologies underlying …

Coherent upconversion of terahertz and mid-infrared signals into visible light opens new
horizons for spectroscopy, imaging, and sensing but represents a challenge for conventional …

All-optical modulation yields the promise of high-speed information processing. In this field,
metasurfaces are rapidly gaining traction as ultrathin multifunctional platforms for light …

The optical properties of nanogap plasmonic cavities formed by a NanoParticle-on-Mirror
(NPoM, or patch antenna) are determined here, across a wide range of geometric …

Plasmon resonances at the surface of metallic antennas allow for extreme enhancement of
Raman scattering. Intrinsic to plasmonics, however, is that extreme field confinement lacks …

Photon avalanche (PA)—where the absorption of a single photon initiates a 'chain
reaction'of additional absorption and energy transfer events within a material—is a highly …

Two-dimensional (2D) transition-metal dichalcogenides (TMDs) have emerged as promising
materials for surface-enhanced Raman scattering (SERS) due to their unique electronic …