Results 81 to 90 of about 2,119 (276)
Impact of Earth’s Oblateness Perturbations on Geosynchronous SAR Data Focusing
Leida xuebao, 2016 In this study, we focus on the ultra-long integration of orbital perturbations of geosynchronous Synthetic Aperture Radar (SAR) for imaging. By deriving mathematical expressions for the Doppler rate and quadratic phase from orbital elements perturbated ...
Hu Wenlong
doaj +1 more source
Balanced Low Earth Satellite Orbits
Advances in Astronomy, 2020 The present work aims at constructing an atlas of the balanced Earth satellite orbits with respect to the secular and long periodic effects of Earth oblateness with the harmonics of the geopotential retained up to the 4th zonal harmonic.
A. Mostafa, M. H. El Dewaik
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Moiré‐Induced Symmetry Breaking of Charge Order in van der Waals Heterostructures
Advanced Materials, EarlyView.A uniaxial moiré potential in misfit (MS)1+δTaS2 heterostructures selectively reshape charge order: the embedded 1H‐TaS2 layer hosts an incommensurate charge‐density wave, fragmented into nanometer domains and stripped of threefold symmetry. Superconductivity, however, remains uniform and fully gapped, revealing heterosymmetry stacking as a selective ...
Sandra Sajan +12 more
wiley +1 more source
UniverseLet two test particles A and B, revolving about a spinning primary along ideally identical orbits in opposite directions, be considered. From the general expressions of the precessions of the orbital inclination induced by the post-Newtonian ...
Lorenzo Iorio
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Moiré Phase Mapping in Twisted Bilayer Liquid Crystals with Reconfigurable Light Polarization States
Advanced Materials, EarlyView.Twisted bilayer liquid crystals are developed by vertical stacking assembly of two liquid crystals having designer domains and optical properties. These moiré‐symmetry, twisted liquid crystals demonstrate reconfigurable polarization states, moiré patterns and phases controlled by twist angles, providing a route to design active optical devices for ...
Jordan A. Wilson +7 more
wiley +1 more source
Solar oblateness and its variations in phase with the 22 yr magnetic cycle
, 2019 HMI (Helioseismic and Magnetic Imager) Science NuggetThe internal dynamics of the Sun is manifested by disturbances on the photosphere surface, inducing directly small deviations from its sphericity.
Irbah, Abdanour +3 more
core +4 more sources
How Many Transiting Giant Planets Can JWST Search for Moons and Rotational Oblateness?
The Astrophysical Journal LettersObservations with the James Webb Space Telescope (JWST) can, in principle, detect moons and rotational oblateness of giant exoplanets through subtle distortions of transit light curves.
Le-Chris Wang, Joshua N. Winn
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Advanced Materials, EarlyView.A novel selective laser sintering and graphitization (SLSG) 3D printing technology enables unibody fabrication of compacted insulating structures and conductive circuits in fluidic‐integrated wearable electronics through adaptive photonic modulation.
Li Zhang, Wing Cheung Mak
wiley +1 more source
An equatorward force acting on large floating ice masses: Polfluchtkraft
Annals of Glaciology, 2017 This study reviews the effects of a force acting upon ice shelves and icebergs arising from the oblateness of the Earth's geoid and the displacement between the center of mass and the center of buoyancy for an object floating on water. The force has been
Hermann Engelhardt, Michael Engelhardt
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Sustainable Plant‐Based Water Repellent Coatings Using Hydrophobic Pine and Palm Pollen
Advanced Materials Interfaces, EarlyView.A novel formulation strategy for creating superhydrophobic coatings using plant‐derived waxes and chemically treated pine and palm pollen. By employing acid modification, the hydrophobicity of the pollen surface is enhanced, resulting in water contact angles exceeding 150°.
Brenda Resendiz‐Diaz +2 more
wiley +1 more source