Results 31 to 40 of about 1,449,170 (246)

Nonradiating photonics with resonant dielectric nanostructures [PDF]

open access: yesNanophotonics, 2019
Nonradiating sources of energy have traditionally been studied in quantum mechanics and astrophysics but have received very little attention in the photonics community. This situation has changed recently due to a number of pioneering theoretical studies
K. Koshelev   +4 more
semanticscholar   +1 more source

Imaging-based molecular barcoding with pixelated dielectric metasurfaces

open access: yesScience, 2018
Metasurfaces for molecular detection Although mid-infrared (mid-IR) spectroscopy is a mainstay of molecular fingerprinting, its sensitivity is diminished somewhat when looking at small volumes of sample.
Andreas Tittl   +7 more
semanticscholar   +1 more source

Interactions between light waves in a nonlinear dielectric

open access: yes, 1962
: The induced non-linear electric dipole and higher moments in an atomic system, irradiated simultaneously by two or three light waves, are calculated by quantum mechanical perturbation theory.
J. Armstrong   +3 more
semanticscholar   +1 more source

Simultaneously enhanced dielectric properties and through-plane thermal conductivity of epoxy composites with alumina and boron nitride nanosheets

open access: yesScientific Reports, 2021
Dielectric materials with good thermal transport performance and desirable dielectric properties have significant potential to address the critical challenges of heat dissipation for microelectronic devices and power equipment under high electric field ...
Zhengdong Wang   +7 more
semanticscholar   +1 more source

Frequency-dependent dielectric function of semiconductors with application to physisorption [PDF]

open access: yesPhys. Rev. B 95, 035203 (2017), 2016
The dielectric function is one of the most important quantities that describes the electrical and optical properties of solids. Accurate modeling of the frequency-dependent dielectric function has great significance in the study of the long-range van der Waals (vdW) interaction for solids and adsorption.
arxiv   +1 more source

PIC Simulations of One-side Multipactor on Dielectric [PDF]

open access: yes, 2022
Breakdown of dielectric RF windows is an important issue for particle accelerators and high-power RF sources. One of the generally considered reasons for the RF windows failure is the multipactor on dielectric surface. The multipactor may be responsible for excessive heating of dielectric and discharge of charges that accumulated in ceramic due to ...
arxiv   +1 more source

Large Magneto-Dielectric Effects in Orthorhombic HoMnO3 and YMnO3

open access: yes, 2005
We have found a remarkable increase (up to 60 %) of the dielectric constant with the onset of magnetic order at 42 K in the metastable orthorhombic structures of YMnO3 and HoMnO3 that proves the existence of a strong magneto-dielectric coupling in the ...
Chu, C. W.   +3 more
core   +1 more source

The latest process and challenges of microwave dielectric ceramics based on pseudo phase diagrams

open access: yesJournal of Advanced Ceramics, 2021
The explosive process of 5G communication evokes the urgent demand of miniaturized and integrated dielectric ceramics filter. It is a pressing need to advance the development of dielectric ceramics utilization of emerging technology to design new ...
Hongcheng Yang   +7 more
semanticscholar   +1 more source

Thermal Casimir effect between random layered dielectrics [PDF]

open access: yesPhys. Rev. A 79, 040101(R) (2009), 2009
We study the thermal Casimir effect between two thick slabs composed of plane-parallel layers of random dielectric materials interacting across an intervening homogeneous dielectric. It is found that the effective interaction at long distances is self averaging and is given by a description in terms of effective dielectric functions.
arxiv   +1 more source

Kapitza homogenization of deep gratings for designing dielectric metamaterials [PDF]

open access: yes, 2013
We theoretically investigate the homogenization of the dielectric response to transverse electric waves of a transverse grating characterized by the Kapitza condition, i.e. the permittivity is rapidly modulated with a modulation depth scaling as the large wavelength to modulation period ratio.
arxiv   +1 more source

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