منابع مشابه
richard taubert FROM NEAR-FIELD TO FAR-FIELD: plasmonic coupling in three-dimensional nanostructures From Near-Field to Far-Field: Plasmonic Coupling in Three-Dimensional Nanostructures
This thesis provides a comprehensive study of the coupling phenomena that occur in plasmonic nanostructures. Electromagnetic coupling between metallic nanoparticles leads to strong spectral modifications in the structures, which are determined using linear optical spectroscopy in the visible and infrared wavelength range. In contrast to previous investigations, the key aspect here are the prope...
متن کاملNear- and far-field spectroscopic imaging investigation of resonant square-loop infrared metasurfaces.
Optical metamaterials have unique properties which result from geometric confinement of the optical conductivity. We developed a series of infrared metasurfaces based on an array of metallic square loop antennas. The far-field absorption spectrum can be designed with resonances across the infrared by scaling the geometric dimensions. We measure the amplitude and phase of the resonant mode as st...
متن کاملOptical forces in coupled plasmonic nanosystems: Near field and far field interaction regimes.
We study the forces generated by an electromagnetic field on two coupled gold nanowires at the vicinity of the plasmon resonance wavelength. Two different regimes are observed, depending on the separation distance between the wires. In the near field coupling regime, both attractive and repulsive forces can be generated, depending on and the illumination wavelength. Furthermore, at the plasmon ...
متن کاملInvestigate probability of damage of Earth dam under Near-field and Far –field earthquake : Case study Gotvand earth dam
The main goal of preset research is investigate the effects of vertical component of Near-Fault and Far-Field earthquake records on the probability of overtopping induced damage of earth dam due to the reduction of freeboard due to the settlement of dam crest. In this respect 12 different earthquake record are selected. Nonlinear dynamic analysis of earth dam is implemented with FLAC 3D using F...
متن کاملExcitation of Microwave Vortices by Ferrite Disks: the Near-Field and Far-Field Application Problems
A small FMR ferrite disk strongly perturbs the cavity field. Graphical representation of the Poynting vector shows that due to the vortex structure the absorption cross-section of a ferrite particle can be much bigger than its geometrical cross-section. Spectral properties of magnetic oscillations in a ferrite disk show unique vortex structures for MS-wave functions.
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ژورنال
عنوان ژورنال: Photonics
سال: 2020
ISSN: 2304-6732
DOI: 10.3390/photonics7040081