Compared with conventional optical elements, 2D photonic metasurfaces, consisting of
arrays of antennas with subwavelength thickness (the 'meta-atoms'), enable the …

The field of nanocatalysis (in which nanoparticles are used to catalyze reactions) has
undergone an exponential growth during the past decade. Two types of studies have been …

Driven by the search for new materials with interesting and unique properties and also by
the fundamental question of how atomic and molecular physical behaviour develops with …

The femtosecond optical response of noble metal nanoparticles and its connection to the
ultrafast electron dynamics are discussed in light of the results of high-sensitivity …

The development, characterization, and technological exploitation of new materials,
particularly as components in 'smart'systems, are key challenges for chemistry and physics …

All-optical signal processing enables modulation and transmission speeds not achievable
using electronics alone,. However, its practical applications are limited by the inherently …

Electron-electron and electron-lattice interactions in noble metals are discussed in the light
of two-color femtosecond pump-probe measurements in silver films. The internal …

Irradiation of a metal with an ultrashort laser pulse leads to a disturbance of the free-electron
gas out of thermal equilibrium. We investigate theoretically the transient evolution of the …

Excitation of localized surface plasmons in metal nanostructures generates hot electrons
that can be transferred to an adjacent semiconductor, greatly enhancing the potential light …

We demonstrate, experimentally and theoretically, that the photon emission from gold
nanorods can be viewed as a Purcell effect enhanced radiative recombination of hot …