Nanoantennas for visible and infrared radiation.
TLDR
The role of plasmonic resonances on the performance of nanoantennas and the influence of geometrical parameters imposed by nanofabrication are discussed.Abstract:
Nanoantennas for visible and infrared radiation can strongly enhance the interaction of light with nanoscale matter by their ability to efficiently link propagating and spatially localized optical fields. This ability unlocks an enormous potential for applications ranging from nanoscale optical microscopy and spectroscopy over solar energy conversion, integrated optical nanocircuitry, opto-electronics and density-of-states engineering to ultra-sensing as well as enhancement of optical nonlinearities. Here we review the current understanding of metallic optical antennas based on the background of both well-developed radiowave antenna engineering and plasmonics. In particular, we discuss the role of plasmonic resonances on the performance of nanoantennas and address the influence of geometrical parameters imposed by nanofabrication. Finally, we give a brief account of the current status of the field and the major established and emerging lines of investigation in this vivid area of research.read more
Citations
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Journal ArticleDOI
Optical Nanoantennas for Photovoltaic Applications.
Francisco de Abreu Duarte,João Paulo N. Torres,António Baptista,Ricardo A. Marques Lameirinhas +3 more
TL;DR: In this article, the behavior of optical aperture nanoantennas, a metal sheet with apertures of dimensions smaller than the wavelength, combined with photovoltaic solar panels is studied.
Journal ArticleDOI
Dielectric optical nanoantennas.
Rabiul Hasan,Olav Gaute Hellesø +1 more
TL;DR: In this article, a review of dielectric optical nanoantennas is presented, and a simulation of a simulated nanoantenna, a dimer consisting of two silicon nanospheres separated by a gap, is shown to have a very small mode volume but a low quality-factor.
Journal ArticleDOI
Design of broadband metal nanosphere antenna arrays with a hybrid evolutionary algorithm.
TL;DR: This Letter presents a method for the design of metal nanosphere antenna arrays with broadband plasmonic field enhancement over the whole visible spectra that is recast as an optimization one by defining a suitable cost function, which is then minimized with the HGA.
Journal ArticleDOI
Optical energy optimization at the nanoscale by near-field interference
TL;DR: In this article, the authors show that optical energy transfer to the magnetic recording layer is most efficient for an off-resonant antenna and that the focal spot in the magnetic film is well below the diffraction limit.
Journal ArticleDOI
Effect of Growth Temperature on Tailoring the Size and Aspect Ratio of Gold Nanorods
TL;DR: It has been demonstrated that the temperature can be used as a simple processing parameter to viably tailor the size and aspect ratio of AuNRs as well as the corresponding surface plasmon resonance behavior.
References
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Computational Electrodynamics: The Finite-Difference Time-Domain Method
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Probing Single Molecules and Single Nanoparticles by Surface-Enhanced Raman Scattering
Shuming Nie,Steven R. Emory +1 more
TL;DR: In this article, surface-enhanced Raman scattering was used to detect single molecules and single nanoparticles at room temperature with the use of surface enhanced Raman, and the intrinsic Raman enhancement factors were on the order of 10 14 to 10 15, much larger than the ensemble-averaged values derived from conventional measurements.
Journal ArticleDOI
Plasmonics for improved photovoltaic devices
Harry A. Atwater,Albert Polman +1 more
TL;DR: Recent advances at the intersection of plasmonics and photovoltaics are surveyed and an outlook on the future of solar cells based on these principles is offered.