Results 61 to 70 of about 311,107 (349)
Conductance of photons in disordered photonic crystals [PDF]
Physical Review E, 2005 The conductance of photons in two-dimensional disordered photonic crystals is calculated using an exact multipole-plane wave method that includes all multiple scattering processes. Conductance fluctuations, the universal nature of which has been established for electrons in the diffusive regime, are studied for photons, in both principal polarizations ...
C. Martijn de Sterke +7 more
openaire +2 more sources
Quadrupole topological photonic crystals [PDF]
Nature Communications, 2020 AbstractQuadrupole topological phases, exhibiting protected boundary states that are themselves topological insulators of lower dimensions, have recently been of great interest. Extensions of these ideas from current tight binding models to continuum theories for realistic materials require the identification of quantized invariants describing the bulk
Li He +3 more
openaire +6 more sources
Advanced Engineering Materials, EarlyView.This study presents rapid evaluation methods for scan strategies in powder bed fusion (PBF) of polymers with a NIR laser as an example for its application. It uses line buffer‐based calculations and point density fields to predict the performance of four different scan strategies. The methods show promising results in laser‐based PBF of polymer samples,
Simon Leupold +9 more
wiley +1 more source
Optical Kossel Lines and Fluorescence in Photonic Liquid Crystals
Crystals, 2020 We propose a general analytical way to describe the fluorescence peculiarities in photonic liquid crystals (revealing themselves as an optical analog of the X-ray Kossel lines in conventional crystals) based at the localized optical edge modes existing ...
Vladimir A. Belyakov
doaj +1 more source
Pendellösung effect in photonic crystals [PDF]
Optics Express, 2008 At the exit surface of a photonic crystal, the intensity of the diffracted wave can be periodically modulated, showing a maximum in the "positive" (forward diffracted) or in the "negative" (diffracted) direction, depending on the slab thickness. This thickness dependence is a direct result of the so-called Pendellosung phenomenon, consisting of the ...
S. Savo +6 more
openaire +7 more sources
Advanced Engineering Materials, EarlyView.In this research, ZrC coatings are evaluated against various counterprobes at the microscale using novel super‐stiff atomic force microscopy cantilevers. The chemical composition of the coating is shown to be an important factor influencing coating hardness and Young's modulus, while surface roughness, counterprobe hardness, and surface energy are the ...
Piotr Jenczyk +4 more
wiley +1 more source
Slow light enhanced correlated photon pair generation in photonic-crystal coupled-resonator optical waveguides [PDF]
Opt. Express 21, 8596-8604 (2013), 2013 We demonstrate the generation of quantum-correlated photon pairs from a Si photonic-crystal coupled-resonator optical waveguide. A slow-light supermode realized by the collective resonance of high-Q and small-mode-volume photonic-crystal cavities successfully enhanced the efficiency of the spontaneous four-wave mixing process.
arxiv +1 more source
, 2002 A method is introduced to analyze the degeneracy properties of the band structure of a photonic crystal making use of the super cells. The band structure associated with a super cell of a photonic crystal has degeneracies at the edge of the Brillouin ...
C. M. Anderson +21 more
core +1 more source
All-optical switching, bistability, and slow-light transmission in photonic crystal waveguide-resonator structures [PDF]
, 2006 We analyze the resonant linear and nonlinear transmission through a photonic crystal waveguide side-coupled to a Kerr-nonlinear photonic crystal resonator.
Busch, Kurt +3 more
core +2 more sources
Dual index properties of photonic crystal and its application in subwavelength focusing
Materials Research Express, 2021 Based on the two-dimensional dielectric wedge-shaped photonic crystal, we studied the existence of two kinds of equivalent refractive indexes (negative refractive index is −1, positive refractive index is 1.897) in the photonic crystal by means of fast ...
Bingming Liang +4 more
doaj +1 more source