Results 61 to 70 of about 9,836,724 (331)
Adjoint computation of Berry phase gradients
Journal of Sound and Vibration9 pages, 1 ...
Cyrill Bösch +3 more
openaire +2 more sources
IEEE Transactions on Antennas and Propagation, 2020 High-directivity antenna systems that provide 2-D beam steering by rotating a pair of phase-gradient metasurfaces (PGMs) in the near field of a fixed-beam antenna, hereafter referred to as near-field meta-steering systems, are efficient, planar, simple ...
Khushboo Singh +3 more
semanticscholar +1 more source
Controlling the light diffraction through a single subwavelength metallic slit via phase gradient
New Journal of Physics, 2023 In this work, we show that the concept of phase gradient metasurfaces provides a versatile way to control the diffraction of light through small holes or slits.
Songsong Li +4 more
doaj +1 more source
A continuum theory of phase separation kinetics for active Brownian particles
, 2013 Active Brownian particles (ABPs), when subject to purely repulsive interactions, are known to undergo activity-induced phase separation broadly resembling an equilibrium (attraction-induced) gas-liquid coexistence.
Allen, Rosalind J. +4 more
core +1 more source
Robust Gradient Descent for Phase Retrieval
CoRRRecent progress in robust statistical learning has mainly tackled convex problems, like mean estimation or linear regression, with non-convex challenges receiving less attention. Phase retrieval exemplifies such a non-convex problem, requiring the recovery of a signal from only the magnitudes of its linear measurements, without phase (sign) information.
Buna-Marginean, A, Rebeschini, P
openaire +4 more sources
A robust method for estimating the two-phase flow rate of oil and gas using wellhead data
Journal of Petroleum Exploration and Production Technology, 2020 Flow rate prediction of multiphase flow in the oil and gas wellbores is more complicated than single-phase flow avoiding direct measurements such as using flowmeters or well logging. This study offers an approach to find the accurate two-phase flow rates,
Ehsan Khamehchi +2 more
doaj +1 more source
Fractional Generalization of Gradient and Hamiltonian Systems
, 2005 We consider a fractional generalization of Hamiltonian and gradient systems. We use differential forms and exterior derivatives of fractional orders. We derive fractional generalization of Helmholtz conditions for phase space.
Tarasov, Vasily E.
core +2 more sources
Strain-gradient mediated local conduction in strained bismuth ferrite films [PDF]
, 2019 It has been recently shown that the strain gradient is able to separate the light-excited electron-hole pairs in semiconductors, but how it affects the photoelectric properties of the photo-active materials remains an open question.
Alexe, Marin +4 more
core +1 more source
Reciprocal control of viral infection and phosphoinositide dynamics
FEBS Letters, EarlyView.Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley +1 more source
Spontaneous PT symmetry breaking of a ferromagnetic superfluid in a gradient field
, 2015 We consider the interaction of a ferromagnetic spinor Bose-Einstein condensate with a magnetic field gradient. The magnetic field gradient realizes a spin-position coupling that explicitly breaks time-reversal symmetry T and space parity P, but preserves
Coop, Simon +4 more
core +1 more source