Results 41 to 50 of about 880,319 (258)

Nutation spin waves in ferromagnets

, 2022
Magnetization dynamics and spin waves in ferromagnets are investigated using the inertial Landau-Lifshitz-Gilbert equation. Taking inertial magnetization dynamics into account, dispersion relations describing the propagation of nutation spin waves in an ...
Cherkasskii, Mikhail, Dowling, William J., Titov, Sergei V., Kalmykov, Yuri P.   +3 more
core   +1 more source

How flagellated bacteria wobble

Physical Review Research
The wobbling motion of flagellated bacteria significantly influences their swimming behavior, yet its dynamics remains poorly understood, primarily due to the difficulty in tracking the 3D orientations of both the flagellar bundle and the cell body. Here,
Chen Gui, Mingxin Mao, Pu Feng, Yuxin Shen, Xiangjun Gong, Gerhard Gompper, Jinglei Hu   +6 more
doaj   +1 more source

Double nutation cross-polarization between heteronuclear spins in solids [PDF]

, 2023
ねじれた座標系で量子周波数ミキシング --核磁気共鳴の感度向上にも--. 京都大学プレスリリース. 2023-05-09.We study transfer of magnetization from one nuclear spin species to another in solid-state nuclear magnetic resonance by cross-polarization (CP) employing radiofrequency irradiation that causes
Kazuyuki Takeda, Wang, Yu, Takeda, Kazuyuki, Yu Wang   +3 more
core   +1 more source

Accelerating Musculoskeletal Robotics Through Parametric Design and 3D‐Printed Flexible Structures

Advanced Intelligent Systems, EarlyView.
Parametric design and flexible 3D printing create muscle‐, tendon‐, ligament‐, and cushion‐like robotic elements from a single thermoplastic polyurethane material. Tuning lattice patterns adjusts regional mechanical properties and enables coordinated multijoint motions in a life‐sized musculoskeletal leg under external suspension, with partial body ...
Shunnosuke Yoshimura, Kento Kawaharazuka, Kei Okada   +2 more
wiley   +1 more source

Damping-Based Attitude Control of a Gyrostatic Satellite in Resistive Media [PDF]

Journal of Applied and Computational Mechanics
The orientation of a satellite that contains a passive, internal mass damper about a stationary point is studied. The satellite is moving in a resistive medium and influenced by gyrostatic torque (GT).
A. Elneklawy, T. Amer, S. Elkilany, A. Abo Seliem, N. Hegazy   +4 more
doaj   +1 more source

Testing a satellite automatic nutation control system [PDF]

, 1974
Testing of a particular nutation control system for the synchronous meteorological satellite (SMS) is described. The test method and principles are applicable to nutation angle control for other satellites with similar requirements.
Hrasiar, J. A.
core  

On the coupling between magnetic field and nutation in a numerical integration approach

, 2011
Nutation amplitudes are computed in a displacement field approach that incorporates the influence of a prescribed magnetic field inside the Earth's core. The existence of relative nutational motions between the liquid core and its surrounding solid parts
Huang, C.-L., C.-L. Huang, X.-H. Liao, Dehant, V., Huang, C. -L., V. Dehant, Van Hoolst, T., M. G. Rochester, Liao, X. -H., Liao, X.-H., T. Van Hoolst, Rochester, M. G., Dehant, Véronique   +12 more
core   +1 more source

An Integrated Fabric‐Pneumatic Soft Sensing System for Multi‐Site Muscle Activity Decoding

Advanced Intelligent Systems, EarlyView.
Fabric‐pneumatic chambers convert muscle deformation into pressure signals without electronics at the body‐contact sensing interface. A unified processing pipeline enables static posture classification, continuous elbow‐angle estimation, forearm gesture recognition, and knee‐movement detection across three anatomical sites.
Qifeng Xun, Jonathan William Ambrose, Quan Xiong, Chen Hua Yeow   +3 more
wiley   +1 more source

Optimization design of radial meshing nutation magnetic gear system based on D-APSO algorithm

Advances in Mechanical Engineering
To combine the high transmission ratio of nutation drives with the non-contact power transfer of permanent-magnet gears, this paper proposes a novel radial meshing nutation magnetic drive system (RMNMD) and investigates its magnetic coupling mechanism ...
Xuefei Wang, Meiyan Lou
doaj   +1 more source

The principal moments of inertia calculated with the hydrostatic equilibrium figure of the Earth

Geodesy and Geodynamics, 2017
As an indication of the Earth's mass distribution, the principal moments of inertia (PMOI, i.e., A, B, C) of the Earth are the basic parameters in studies of the global dynamics of the earth, like earth nutation, and the geophysics.
Chengjun Liu, Chengli Huang, Mian Zhang
doaj   +1 more source