Results 91 to 100 of about 1,631,832 (323)

Diffraction-free subwavelength-beam optics

open access: yes, 2003
Diffraction is a fundamental property of light propagation. Owing to this phenomenon,light diffracts out in all directions when it passes through a subwavelength slit.This imposes a fundamental limit on the transverse size of a light beam at a given ...
Adams   +62 more
core   +1 more source

Factorisation in diffraction [PDF]

open access: yesNuclear Physics B - Proceedings Supplements, 2010
Recent experimental data on dijet cross sections in diffractive photoproduction at HERA collider were analysed with emphasis on QCD factorisation breaking effects. Dijet photoproduction data of jets with low transverse energy E T1 > 5 GeV indicated a possible dependence on E T of the suppression of jet production with respect to ...
openaire   +4 more sources

Influence of Sample Preparation and Processing Procedures on the Thermal Diffusivity of MgO‐C Refractories

open access: yesAdvanced Engineering Materials, EarlyView.
The thermal diffusivity of MgO‐C refractories is highly sensitive to sample preparation and processing procedures. In this article, the effects of coking sequence, machining conditions, structural inhomogeneity, and graphite coating application on measurements using laser flash apparatus are systematically investigated.
Luyao Pan   +4 more
wiley   +1 more source

Numerical Simulation of a Novel Sensing Approach Based on Abnormal Blocking by Periodic Grating Strips near the Silicon Wire Waveguide

open access: yesSensors, 2018
This paper discusses the physical nature and the numerical modeling of a novel approach of periodic structures for applications as photonic sensors. The sensing is based on the high sensitivity to the cover index change of the notch wavelength.
Andrei Tsarev   +3 more
doaj   +1 more source

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

open access: yesAdvanced Engineering Materials, EarlyView.
It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti   +11 more
wiley   +1 more source

Combining Wave and Particle Effects in the Simulation of X-ray Phase Contrast—A Review

open access: yesInstruments
X-ray phase-contrast imaging (XPCI) is a family of imaging techniques that makes contrast visible due to phase shifts in the sample. Phase-sensitive techniques can potentially be several orders of magnitude more sensitive than attenuation-based ...
Emilie Pietersoone   +4 more
doaj   +1 more source

Anapole Correlations in Sr2IrO4 Defy the jeff = 1/2 Model

open access: yes, 2019
Zel'dovich (spin) anapole correlations in Sr2IrO4 unveiled by magnetic neutron diffraction contravene the spin-orbit coupled ground state used by the jeff = 1/2 (pseudo-spin) model.
Khalyavin, D D, Lovesey, S W
core   +1 more source

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

open access: yesAdvanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar   +2 more
wiley   +1 more source

Scattering of Rayleigh-waves by surface-breaking cracks: an integral formulation [PDF]

open access: yesGeofísica Internacional, 2007
Several crack configurations are considered in order to show the importance of the cracks’ geometry on the Rayleigh-wave propagation. We use the Indirect Boundary Element Method, this numerical technique is based on an integral representation of the ...
F. J. Sánchez-Sesma   +2 more
doaj  

Rare Earth Doped Ceria: The Complex Connection Between Structure and Properties

open access: yesFrontiers in Chemistry, 2018
The need for high efficiency energy production, conversion, storage and transport is serving as a robust guide for the development of new materials.
Mauro Coduri   +4 more
doaj   +1 more source

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