Results 21 to 30 of about 41,958 (299)

Angular and Orbital Angular Momenta in the Tight Focus of a Circularly Polarized Optical Vortex

Photonics, 2023
Based on the Richards-Wolf (RW) formalism, we obtain two different exact expressions for the angular momentum (AM) density of light in the focus of an optical vortex with a topological charge n and right circular polarization.
Victor V. Kotlyar, Alexey A. Kovalev, Alexey M. Telegin   +2 more
doaj   +1 more source

Spin-constrained orbital-angular-momentum control in high-harmonic generation

Physical Review Research, 2019
The interplay between spin and orbital angular momentum in the up-conversion process allows us to control the macroscopic wave front of high harmonics by manipulating the microscopic polarizations of the driving field.
F. Kong, C. Zhang, H. Larocque, F. Bouchard, Z. Li, M. Taucer, G. Brown, Stefano Severino, T. J. Hammond, E. Karimi, P. B. Corkum   +10 more
doaj   +1 more source

The Angular Momentum Unloading of the Asymmetric GEO Satellite by Using Electric Propulsion with a Mechanical Arm

Aerospace
A high-precision attitude control satellite uses an angular momentum exchange device such as a flywheel or a control moment gyro as the actuator for attitude stability control.
Hong Zhu, Jie Qin, Qinghua Zhu, Chunyang Liu, Haining Yin, Lijun Ye, Fucheng Liu   +6 more
doaj   +1 more source

Global angular momentum generation in heavy-ion reactions within a hadronic transport approach [PDF]

EPJ Web of Conferences
In this study, we utilize the SMASH transport model to explore the generation of global angular momentum in heavy-ion collisions. Our results corroborate previous models, highlighting a pronounced peak in angular momentum transfer during mid-central ...
Sass Nils, Müller Marco, Garcia-Montero Oscar, Elfner Hannah   +3 more
doaj   +1 more source

X‐Ray Tomography Analysis of Damage Mechanisms in Metal Matrix Syntactic Foams During Compression

Advanced Engineering Materials, EarlyView.
In situ synchrotron X‐ray tomography is used to investigate the internal damage mechanisms of AlSi12 metal matrix syntactic foam with ceramic hollow spheres during compressive loading. It is concluded that a homogeneous distribution of the second‐phase filler material results in a sequential collapse in a localized region; this leads to controlled and ...
Indrajeet Tambe, János Endre Maróti, Imre Norbert Orbulov, Zoltan Hegedűs, Markus Ziehmer, Carl E. Krill III, Håkan Hallberg, Pär A. T. Olsson, Johan Hektor   +8 more
wiley   +1 more source

Cyclic Evolution of Synergized Spin and Orbital Angular Momenta

Advanced Science
Spin angular momentum (SAM) and orbital angular momentum (OAM) are fundamental physical characteristics described by polarization and spatial degrees of freedom, respectively.
Lei Liu, Xiao‐Chen Sun, Yuan Tian, Xiujuan Zhang, Ming‐Hui Lu, Yan‐Feng Chen   +5 more
doaj   +1 more source

Mapping the transverse spin sum rule in position space

Physics Letters B
We discuss in detail the relativistic spatial distribution of transverse angular momentum, including both orbital and intrinsic spin contributions. Using the quantum phase-space formalism, we begin with the definition of the three-dimensional spatial ...
Cédric Lorcé, Asmita Mukherjee, Ravi Singh, Ho-Yeon Won   +3 more
doaj   +1 more source

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

Advanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner, Ruben Maile, Murat Cuvalli, Andreas Wolf, Ayisha Komal, Robert Oestreich, Christoph Janiak, Karl Mandel, Alexander Knebel, Klaus Müller‐Buschbaum   +9 more
wiley   +1 more source

Dynamical Properties of Magnetized Low-angular-momentum Accretion Flows around a Kerr Black Hole

The Astrophysical Journal
An essential factor for determining the characteristics of an accretion flow is its angular momentum. According to the angular momentum of the flow, semi-analytical analysis suggests various types of accretion solutions. It is critical to test these with
Indu K. Dihingia, Yosuke Mizuno
doaj   +1 more source

Angular momentum and chaos bound of charged particles around Einstein–Euler–Heisenberg AdS black holes

New Journal of Physics, 2022
In this paper, we investigate influences of the charge and angular momentum of a particle around a charged Einstein–Euler–Heisenberg AdS black hole on a Lyapunov exponent, and find spatial regions where the chaos bound is violated.
Deyou Chen, Chuanhong Gao
doaj   +1 more source