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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Applications of Hybrid Metal‐Dielectric Nanostructures: State of the Art
TL;DR: In this paper , a general overview of the properties of metal-dielectric nanostructures, some of their most relevant applications including directional scattering, sensing, surface enhanced Raman spectroscopy, absorption enhancement, fluorescence and quantum dot emission enhancement, nonlinear effects, as well as lasing, are summarized.
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Hot-carrier extraction in nanowire-nanoantenna photovoltaic devices
I. Ju Chen,Steven Limpert,Wondwosen Metaferia,Claes Thelander,Lars Samuelson,Federico Capasso,Adam Burke,Heiner Linke +7 more
TL;DR: From photon energy- and irradiance-dependent photocurrent and photovoltage measurements, it is found that photocurrent generation is dominated by internal photoemission of non-thermalized hot electrons when the photoexcited electron energy is above the barrier, and by photo-thermionic emission when the energy is below the barrier.
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Directional absorption by phased arrays of plasmonic nanoantennae probed with time-reversed Fourier microscopy
TL;DR: In this article, an ordered array of aluminum nanopyramids, behaving as a phased array of optical antennae, is demonstrated to strongly modifies light absorption in thin layers of dye molecules.
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Highly directional bottom-up 3D nanoantenna for visible light
TL;DR: A simple bottom-up approach is demonstrated to produce macroscopic arrays of 3D nanoantennas operating with visible light and a way to address their functionality via interaction with quantum dots (QDs), properly embedded in the structure of the nanoantenna is presented.
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The long-term effects of phase advance shifts of photoperiod on cardiovascular parameters as measured by radiotelemetry in rats
TL;DR: Rats kept under irregular LD conditions have suppressed circadian control of heart rate, blood pressure and locomotor activity and rely more on an acute response to the LD regime, indicating chronodisruption can contribute to the pathogenesis of cardiovascular diseases.
References
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Book
Absorption and Scattering of Light by Small Particles
TL;DR: In this paper, a Potpourri of Particles is used to describe surface modes in small Particles and the Angular Dependence of Scattering is shown to be a function of the size of the particles.
Book
Computational Electrodynamics: The Finite-Difference Time-Domain Method
TL;DR: This paper presents background history of space-grid time-domain techniques for Maxwell's equations scaling to very large problem sizes defense applications dual-use electromagnetics technology, and the proposed three-dimensional Yee algorithm for solving these equations.
Journal ArticleDOI
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.
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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.