Results 131 to 140 of about 6,050,424 (293)

Radial and vertical angular momentum transport in protostellar discs

, 2007
Angular momentum in protostellar discs can be transported either radially, through turbulence induced by the magnetorotational instability (MRI), or vertically, through the torque exerted by a large-scale magnetic field.
Wardle, Mark, Salmeron, Raquel, Konigl, Arieh   +2 more
core   +1 more source

Nonlocomotory Robotic Strategies for Dynamic Rotation Control in Terrestrial Robots: A Review

Advanced Robotics Research, EarlyView.
Terrestrial robots increasingly require rapid body rotation to maintain stability and agility in complex environments. This review shows nonlocomotory rotational control strategies that operate without ground contact, including reaction wheels, tails, bars, limbs, and thrusters.
Y. Liang, J. An, X. Zheng, D. Wang, S. Wang, X. Wang, P. Zhu, J. Pei, S. Li, J. Paripurana, Y. Han, Z. Tang, X. Gan, Q. He, X. Ma   +14 more
wiley   +1 more source

QPOs from charged particles around magnetized black holes in braneworlds

European Physical Journal C: Particles and Fields
Quasiperiodic oscillations (QPOs) are a powerful tool for testing gravity theories, probing gravitational and electromagnetic field properties, and obtaining constraints on the black hole and field parameters.
Javlon Rayimbaev, Sardor Murodov, Abubakir Shermatov, Amirkhon Yusupov   +3 more
doaj   +1 more source

Multidirectional Motion Strategy of Miniature Water Surface Robot Actuated by Single Exciter

Advanced Robotics Research, EarlyView.
A novel multidirectional motion strategy on the water surface based on a single exciter is proposed, and a single‐exciter single‐plate module is developed for actuation. The driving forces generation mechanism of the module is revealed from the perspective of the asymmetric surface wave field.
Haoxuan He, Dehong Wang, Jing Li, Shijing Zhang, Yingxiang Liu   +4 more
wiley   +1 more source

Multimodal Locomotion in Insect‐Inspired Microrobots: A Review of Strategies for Aerial, Surface, Aquatic, and Interfacial Motion

Advanced Robotics Research, EarlyView.
This review identifies key design considerations for insect‐inspired microrobots capable of multimodal locomotion. To draw inspiration, biological and robotic strategies for moving in air, on water surfaces, and underwater are examined, along with approaches for crossing the air–water interface.
Mija Jovchevska, Kaushik Jayaram, Nicole Xu   +2 more
wiley   +1 more source

Numerical Investigation on the Flow Characteristics in Axial-Inlet Cover-Plate Cavities

Energies
This paper investigates the complex flow characteristics and parameter prediction methods for axial-inlet cover-plate cavities in pre-swirl systems numerically.
Zengyan Lian, Pei Wang, Guang Liu, Ziyi Sun, Jun Liu, Huiping Pei, Wenying Ju, Xingen Lu   +7 more
doaj   +1 more source

Flux enhancement of photons entangled in orbital angular momentum

, 2011
Entangled photons are generally collected by detection systems that select their certain spatial modes, for example using single-mode optical fibers.
Valencia, Alejandra, Alejandra Valencia, Palacios, Silvana, León Montiel, R.D.J., Hendrych, Martin, Juan P. Torres, Martin Hendrych, R. de J. León-Montiel, Pérez Torres, Juan, Silvana Palacios   +9 more
core   +1 more source

Waveguide Photoactuators: Materials, Fabrication, and Applications

Advanced Robotics Research, EarlyView.
Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi, Hemin Pan, Yang Zong, Yongfeng Mei, Jizhai Cui   +4 more
wiley   +1 more source

Compliant Pneumatic Feet with Real‐Time Stiffness Adaptation for Humanoid Locomotion

Advanced Robotics Research, EarlyView.
A compliant pneumatic foot with real‐time variable stiffness enables humanoid robots to adapt to changing terrains. Using onboard vision and pressure control, the foot modulates stiffness within each gait cycle, reducing impact forces and improving balance. The design, cast in soft silicone with embedded air chambers and Kevlar wrapping, offers durable,
Irene Frizza, Hiroshi Kaminaga, Philippe Fraisse, Gentiane Venture   +3 more
wiley   +1 more source

Radiating Love: adiabatic tidal fluxes and modes up to next-to-next-to-leading post-Newtonian order

Journal of High Energy Physics
We present the analytical evaluation of the gravitational energy and angular momentum flux with tidal effects for inspiraling compact binaries, at the next-to-next-to-leading post-Newtonian (2PN) order, within the diagrammatic Effective Field Theory ...
Manoj K. Mandal, Pierpaolo Mastrolia, Raj Patil, Jan Steinhoff   +3 more
doaj   +1 more source