Plasmonics—the interaction of light with metal surface electrons

Abstract

The realization of light amplification by stimulated emission of radiation opened up an enormous wealth of potential new research and technologies in a broad wavelength range of electromagnetic waves. One of the new fields is plasmonics, based on the special properties of some materials with negative refractive index. In this case surface electromagnetic waves, coupled to surface electrons, the so-called surface plasmons can be generated. These waves among others represent a large enhancement of the EM field near the surface of the materials. The present paper illustrates some of the consequences of this phenomenon for a broad range of phenomena from 'lasing' to electron pairing. The latter is the basic condition for superconductivity, in our case found at room temperature. Measurements with a scanning tunneling microscope, furthermore electron and photon emission studies are the source of the presented experimental data.

Shape-dependent interaction of gold nanoparticles with cultured cells at laser exposure

“…Temperature of medium was recorded by Thermal Camera (Irisys, UK). At irradiation, the temperature of cell suspensions with or without GNPs was lower than 30 o C. The studies of laser interaction with GNPs was attracted significant interest,20,21 moreover, absence of heating of surrounding medium also was proved theoretically by Avetisyan et al22 for 800-nm pulsed (50 ps -50 ns): the calculated temperature on the surface can be up to 100°C, while 10 nm away from the surface in water it hardly reaches 50°C.Preparations of cells were observed by inverted microscope Leica 3000 (Leica Microsystems, Germany) in the fluorescence mode (filter I3, excitation 450-490 nm) at the Simbioz Center, IBPPM RAS, Saratov. Each experiment was triplicated.…”

Nanoplasmonic laser fusion response to Földes and Pokol

“…The second effect we use is to achieve simultaneous detonation in the whole volume of the target, by regulating the laser light absorption with nanoshells or nanorods. This second effect is already experimentally proven in validation experiments, at Wigner RCP, Budapest, the Institute of Földes (Kroó and Rácz, 2016).…”

Nanoplasmonic Laser Fusion. Response to Földes and Pokol -- Letter to the Editor

“…The second effect we use is to achieve simultaneous detonation in the whole volume of the target, by regulating the laser light absorption with nano-shells or nano-rods. This second effect is already experimentally proven in validation experiments, at Wigner RCP, Budapest, the institute of Földes [7].…”