Recently, a new branch of quantum optics—quantum nanoplasmonics—has arisen.1,2 Advantageous plasmon properties such as small wavelength and a high-energy concentration open new perspectives for constructing nanodevices such as waveguides, cavities, and antennas. In this regard, studies of plasmons propagating along 1D objects such as wires,3 wedges,4,5 and channels6,7 are of great interest. Los...

We have studied the excitation of plasmons produced by 100 eV He‡, Ne‡ and Ar‡and by 5±100 keV H‡ and He‡ projectiles in Al and Mg through the observation of electrons from plasmon decay, ejected from clean and cesiated surfaces. At low velocities, plasmon excitation occurs only for ions of high potential energy and is independent of velocity. The e€ect of Cs adsorption on this potential plasmo...

Optical excitation of plasmons in a quasi-one-dimensional conductor" (1974). P. F.

We demonstrate the enhancement of fluorescence emitted from dye molecules coupled with two surface plasmons, i.e., silver nanoparticles (AgNPs)-induced localized plasmons (LSP) and thin (Ag) film supported plasmons. Excitation light is illuminated to a SiO2 layer that contains both rhodamine 110 AgNPs. AgNPs enhances excitation rates in their close proximity due LSP-induced local electromagneti...

Plasmons supported in the massless electron surface states of topological insulators (TIs), known as Dirac plasmons, have great potential next generation optoelectronics. However, their inherent confinement to makes investigation plasmons challenging. Near-field techniques provide ideal platform directly probe due sensitivity evanescent fields at surface. Here, we demonstrate use aperture near-...

Metal surfaces with sub-wavelength structures form a plasmon polariton-like surface mode, i.e., spoof-plasmon. The spoof-plasmon on corrugated disk propagates radially and is reflected at the edge, resulting in formation of plasmonic cavity. With concentric circular corrugation, excited spoof-plasmons an axisymmetric spiral have non-zero orbital angular momenta non-axisymmetric Spoof-plasmons c...

The use of surface plasmons on planar surfaces for the characterisation of those surfaces is analysed. In particular, analytic expressions are derived for the sensitivity of such characterisation to the variation of bulk refractive indices, and to the addition of thin dielectric layers on the plasmon supporting surface. Comparison between surface plasmon and dielectric waveguide techniques is m...

Thin metallic nanowires are highly promising candidates for plasmonic waveguides in photonic and electronic devices. We have observed that light from the end of a silver nanowire, following excitation of plasmons at the other end of the wire, is emitted in a cone of angles peaking at nominally 45-60 degrees from the nanowire axis, with virtually no light emitted along the direction of the nanow...