Results 11 to 20 of about 687,411 (298)

The scattering variety [PDF]

open access: yesJournal of High Energy Physics, 2014
The so-called Scattering Equations which govern the kinematics of the scattering of massless particles in arbitrary dimensions have recently been cast into a system of homogeneous polynomials. We study these as affine and projective geometries which we call Scattering Varieties by analyzing such properties as Hilbert series, Euler characteristic and ...
Cyril Matti   +3 more
openaire   +4 more sources

Scattering of Skyrmions [PDF]

open access: yesNuclear Physics B, 2015
In this paper, we present a detailed study of Skyrmion-Skyrmion scattering for two $B=1$ Skyrmions in the attractive channel where we observe two different scattering regimes. For large separation, the scattering can be approximated as interacting dipoles. We give a qualitative estimate when this approximation breaks down.
Foster, David, Krusch, Steffen
openaire   +6 more sources

Scattering on scattering [PDF]

open access: yesLight: Science & Applications, 2017
Ultrafast experiments can reveal the spatiotemporal dynamics of nanostructure formation via scattering in background-free optical dark-field microscopy.
openaire   +3 more sources

Flexible Metamaterial Quarter-Wave Plate and Its Application in Blocking the Backward Reflection of Terahertz Waves

open access: yesNanomaterials, 2023
A terahertz flexible metamaterial quarter-wave plate (QWP) is designed and fabricated using polyimide as the substrate in this paper, with a 3 dB axial ratio bandwidth of 0.51 THz and high polarization conversion efficiency and transmittance.
Jinhai Sun   +6 more
doaj   +1 more source

Melting and Re-Freezing Leads to Irreversible Changes in the Morphology and Molecular-Level Dynamics of Pfizer-BioNTech COVID-19 Vaccine

open access: yesMedicina, 2021
Background and Objectives: As an mRNA-based vaccine, the Pfizer-BioNTech COVID-19 vaccine has stringent cold storage requirements to preserve functionality of the mRNA active ingredient.
Eugene Mamontov   +3 more
doaj   +1 more source

Wideband Radar Echo Frequency-domain Simulation and Analysis for High Speed Moving Targets

open access: yesLeida xuebao, 2014
A frequency-domain method is proposed for wideband radar echo simulation of high-speed moving targets. Based on the physical process of electromagnetic waves observing a moving target, a frequency-domain echo model of wideband radar is constructed, and ...
Ning Chao   +3 more
doaj   +1 more source

Cold and Thermal Neutron Single Grating Dark-Field Imaging Extended to an Inverse Pattern Regime

open access: yesApplied Sciences, 2022
Neutron dark-field imaging is a powerful tool for the spatially resolved characterization of microstructural features of materials and components. Recently, a novel achromatic technique based on a single absorption grating for the concurrent measurement ...
Matteo Busi   +4 more
doaj   +1 more source

The XTRA Option at the NEUTRA Facility—More Than 10 Years of Bi-Modal Neutron and X-ray Imaging at PSI

open access: yesApplied Sciences, 2021
Just after the start into the new millennium the concept for combined neutron and X-ray imaging was introduced by extending the standard configuration of the thermal neutron imaging NEUTRA instrument with a complementary 320 kV X-ray tube setup.
Eberhard H. Lehmann   +5 more
doaj   +1 more source

On Scattered Spaces [PDF]

open access: yesProceedings of the American Mathematical Society, 1974
We show that each 0 0 -dimensional Hausdorff space which is scattered can be mapped continuously in a one-to-one way onto a scattered 0 0 -dimensional Hausdorff space of the same weight as its cardinality. This gives an easier and a new proof of the fact that a countable regular space admits a coarser compact Hausdorff
M. Rajagopalan, V. Kannan
openaire   +3 more sources

Evolution of porous materials from ancient remedies to modern frameworks

open access: yesCommunications Chemistry, 2021
Porous materials play a significant role in modern chemistry and materials science; despite recent scientific interest, they have a history dating back to antiquity.
Gregory S. Day   +3 more
doaj   +1 more source

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