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A novel Metal Dielectric Metal (MDM) nanocrescent antenna is presented in this paper. It is formed by locating a gold circular patch, on the top of a circular aperture etched within a 30 nm gold plate. The vertical spacing between the two gold layers is filled with Al2O3. The centers of both aperture and patch are not on top of each other, resulting in a crescent-shaped nantenna. This nantenna can...
The near field coupling effect between a metallic nanostructure and a superlens has been studied numerically. It is found that the coupling effect is significant and the field distribution is altered substantially by it. This effect has a wide range of potential applications, for example using this effect in plasmonic nanostructures we can design devices with novel functionalities, such as a nanoatenna-superlens...
Spherical active coated nano-particles comprised of a silica nano-cylinder core covered with a plasmonic nano-shell are investigated with regard to their near- and far-field properties. The source of excitation is taken to be that of a tangential or a radial electric Hertizan dipole while three different plasmonic materials are employed for the nano-shells, namely silver, gold and copper.
We present here the main features of cloaking based on plasmonic materials, together with some novel aspects of the exotic and anomalous features that such plasmonic shells may provide. In particular, in addition to scattering cancellation features, we discuss a special condition for which a suitably designed plasmonic metamaterial shell may produce an anti-resonant (very low) scattering, independently...
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