Although near-field radiative heat transfer was introduced in the 1950's, interest field has recently revived, as effect promises improved performance various applications where contactless temperature regulation small-scale is a requirement. With progress computational electromagnetics well nanoinstrumentation, it become possible to simulate complex configurations and measure with high precision. In this Perspective, we highlight key theoretical experimental advances field, discuss...

Platelet derivatives are commonly used in wound healing and tissue regeneration. Different procedures of platelet preparation may differentially affect growth factor release cell growth. Preparation platelet-rich fibrin (PRF) is accompanied by factors, including platelet-derived (PDGF), vascular endothelial (VEGF) transforming β1 (TGFβ1), several cytokines. When compared with the standard procedure for plasma (PRP), PRF released 2-fold less PDGF, but >15-fold >2-fold VEGF TGFβ1,...

Abstract The plasmon hybridization theory is based on a quasi-electrostatic approximation of the Maxwell’s equations. It does not take into account magnetic interactions, retardation effects, and radiation losses. Magnetic interactions play dominant role in scattering from dielectric nanoparticles. effects fundamental coupling modes with incident determining their radiative strength; exclusion may lead to erroneous predictions excited scattered power spectra. Radiation losses significant...

Approaching thermodynamic limits in light harvesting requires enabling nonreciprocal thermal emission. The majority of previously reported emitters operate reflection mode, following original proposals by M. Green [ Nano Lett. 12 , 5985 ( 2012 ) 10.1021/nl3034784 ] and others. In these proposals, cascaded junctions that re-direct each junction’s emission towards a subsequent one are employed for efficient light-harvesting. Recently, simplified concepts have been proposed solar photovoltaics...

Small dielectric objects may resonate if their permittivity is sufficiently high. The authors show that these resonances have a magnetoquasistatic origin and derive properties by studying the spectrum of an integral operator.

We introduce an analytical framework for near-field radiative heat transfer in bulk plasmonic and polar media. Considering material dispersion, we derive a closed-form expression the thermal conductance, which disentangles role of optical loss from other dispersion characteristics, such as spectral width Reststrahlen band dielectrics, well temperature. provide universal condition maximizing that defines optimal interplay between material's polariton resonance frequency, based on tight bounds...

The electromagnetic modes and the resonances of homogeneous, finite size, two-dimensional bodies are examined in frequency domain by a rigorous full wave approach based on an integro-differential formulation scattering problem. Using modal expansion for current density that disentangles geometric material properties body equation induced surface (free or polarization) field is solved. corresponding resonant values conductivity (eigen-conductivities) evaluated solving linear eigenvalue...

Small changes in the complex between a peptide and molecule of major histocompatibility generate ligands able to partially activate (partial agonist) or even inhibit (antagonist) T-cell functions. receptor engagement antagonist results partial zeta chain phosphorylation without activation associated ZAP-70 kinase. Herein we show that, despite strong inhibition both inositol phospholipid hydrolysis extracellular increasing concentrations increased activity CD4-Lck Addition anti-CD4 antibody...

The problem of finding the optimal current distribution supported by small radiators yielding minimum quality (Q) factor is a fundamental in electromagnetism. Q bounds constrain maximum operational bandwidth devices including antennas, metamaterials, and nanoresonators, have been featured seminal papers past decades. Here, we determine lower factors small-size plasmonic high-permittivity dielectric resonators, which are characterized quasi-electrostatic quasi-magnetostatic natural modes,...

In this paper we study, in the time domain, interaction between localized surface plasmons and photons arbitrarily shaped metal nanoparticles, by using Hopfield approach to quantize plasmon modes, where electron oscillations are represented a harmonic matter field linearly coupled electromagnetic radiation. The plasmon-photon coupling gives rise dressed modes. We have found that radiation does not induce significant among different quasielectrostatic modes for particles of size up plasma...

In this paper, we introduce an alternative representation of the electromagnetic field scattered from a homogeneous sphere coated with layer uniform thickness. Specifically, expand using set modes that are independent permittivity coating, while expansion coefficients simple rational functions permittivity. The theory develop represents both framework for analysis plasmonic and photonic straightforward methodology to design coating pursue prescribed tailoring field. To illustrate practical...

Approaching thermodynamic limits in light harvesting requires enabling nonreciprocal thermal emission. The majority of previously reported emitters operate reflection mode, following original proposals by M. Green and others. In these proposals, cascaded junctions that re-direct each junction's emission towards a subsequent one are employed for efficient light-harvesting. Recently, simplified concepts have been proposed solar photovoltaics thermophotovoltaics leverage the concept tandem to...

Approaching thermodynamic limits in light harvesting requires nonreciprocal thermal emission. Most of previous emitters operate reflection. We propose a pattern-free heterostructure operating transmission mode, using magneto-optical material embedded between two dielectrics.

We analyse the resonance conditions of a long and narrow ribbon finite length whether it is conductive or dielectric. This accomplished by using full wave approach based on material independent modes that naturally discriminates role geometry material. method effectively allows design in such way to obtain desired resonances. Eventually, as an example, we two quasi-one dimensional resonators graphene layer silicon thin film.

Plasmonic nanostructures with singular geometries can exhibit a broadband scattering response that at first glance appears to violate the lower bounds for radiation quality (Q) factor of small radiators, known as Chu limit. Here we explore this apparent contradiction, investigating Q resonant modes supported by two nearly touching cylinders, and analyze how their fractional bandwidth fares in relation We derive factors two-dimensional objects an arbitrary cross-section. then discuss...

We demonstrate the directional scattering cancellation for a dielectric sphere of radius up to ten times incident wavelength, by coating it with surface finite conductivity. Specifically, problem determining values conductivity that guarantees destructive interference among hundreds multipolar orders at prescribed angular direction is reduced determination zeros polynomial, whose coefficients are analytically known.

In the last few decades, plasmon nanoparticles (NP) have been proposed as a suitable platform to control and enhance light-matter interaction. Nowadays, modern technologies are pushing this interaction extreme: single quantum emitters can be isolated, few-nanometer particles fabricated, single-photon state measured. For complete analysis of coupling phenomena involving nanoparticles, proper description is needed.

The plasmon hybridization theory is based on the quasi-electrostatic approximation of Maxwell equations. It neglects radiation effects and magnetic interactions. As a consequence absence interactions, modes, which play dominant role in scattering from dielectric nanoparticles, are completely disregarded. We introduce for non-hermitian composite systems, full-wave equations that overcomes all these limitations returns well-known model when applied to deep subwavelength metal dimers....

The plasmon hybridization theory is based on a quasi-electrostatic approximation of the Maxwell's equations. It does not take into account magnetic interactions, retardation effects, and radiation losses. Magnetic interactions play dominant role in scattering from dielectric nanoparticles. effects fundamental coupling modes with incident determining their radiative strength; exclusion may lead to erroneous predictions excited scattered power spectra. Radiation losses significant broadening...

We introduce an analytical framework for near-field radiative heat transfer in bulk plasmonic and polar media. Considering material dispersion, we derive a closed-form expression the thermal conductance, which disentangles role of optical loss from other dispersion characteristics, such as spectral width Reststrahlen band dielectrics, well temperature. provide universal condition maximizing that defines optimal interplay between material's polariton resonance frequency, based on tight bounds...