Results 41 to 50 of about 9,836,724 (331)
Designing Efficient Phase-Gradient Metasurfaces for Near-Field Meta-Steering Systems
IEEE Access, 2021 We investigate the aptness of various $4^{th}$ order (90°) rotationally symmetric phase-transforming cells for the upper phase-gradient metasurface, which always receives an oblique incidence wave from the lower metasurface in a Near-Field Meta-Steering ...
Khushboo Singh, M. Afzal, K. Esselle
semanticscholar +1 more source
Inside-out growth or inside-out quenching? clues from colour gradients of local galaxies [PDF]
, 2017 We constrain the spatial gradient of star formation history within galaxies using the colour gradients in NUV-u and u-i for a local spatially-resolved galaxy sample.
Blanton, Michael +3 more
core +3 more sources
Achieving Directive Radiation and Broadband Microwave Absorption by an Anisotropic Metasurface
IEEE Access, 2019 Simultaneously integrating electromagnetic absorption and wavefront-shaping into a single metasurface with flat and low profile is crucial for many practical applications both in science and engineering community. Here, by introducing lossy components to
Jun Sun +6 more
doaj +1 more source
Phase synchronization analysis by assessment of the phase difference gradient
Chaos: An Interdisciplinary Journal of Nonlinear Science, 2009 Phase synchronization is an important phenomenon of nonlinear dynamics and has recently received much scientific attention. In this work a method for identifying phase synchronization epochs is described which focuses on estimating the gradient of segments of the generalized phase differences between phase slips in an experimental time series. In phase
Vejmelka, M. (Martin) +2 more
openaire +3 more sources
A gradient bound for free boundary graphs [PDF]
, 2010 We prove an analogue for a one-phase free boundary problem of the classical gradient bound for solutions to the minimal surface equation. It follows, in particular, that every energy-minimizing free boundary that is a graph is also smooth.
Aguilera +14 more
core +3 more sources
Remote Sensing, 2014 Interferometric Synthetic Aperture Radar (InSAR) and Differential Interferometric Synthetic Aperture Radar (DInSAR) have shown numerous applications for subsidence monitoring.
Donglie Liu +6 more
doaj +1 more source
Understanding of Wood Anomalies in Metallic Gratings From Phase Gradient Metasurfaces
Frontiers in Materials, 2022 Phase-gradient metasurfaces (PGMs) have provided unprecedented opportunities for manipulating light. Here, we reexamine ordinary and well-studied subwavelength metallic gratings (OMGs) from the concept of PGMs to provide more insight into their ...
Jiaqi Quan +4 more
doaj +1 more source
Adaptive synchronization in delay-coupled networks of Stuart-Landau oscillators [PDF]
, 2011 We consider networks of delay-coupled Stuart-Landau oscillators. In these systems, the coupling phase has been found to be a crucial control parameter. By proper choice of this parameter one can switch between different synchronous oscillatory states of ...
A. L. Fradkov +10 more
core +2 more sources
Multi-Beam Metasurface Antenna by Combining Phase Gradients and Coding Sequences
IEEE Access, 2019 In this paper, we propose a strategy to achieve a single-feed multi-beam metasurface antenna by combining phase gradient and coding sequence. Theoretically, the multi-beam antennas with various far-field patterns can be realized via superimposing ...
He Wang +10 more
doaj +1 more source
Design of Ultra-wideband Low RCS Reflecting Screen Based on Phase Gradient Metasurface
, 2021 In order to realize full phase coverage of 360°and abnormal reflection of incident wave, one kind of metasurface unit-cell with double diagonal opening cross petal and two types of one and two dimensional phase gradient metasurface with elements arranged
K. Ji +4 more
semanticscholar +1 more source