Results 81 to 90 of about 184,587 (296)

Locking of the Rotation of Disk-Accreting Magnetized Stars

, 2005
We investigate the rotational equilibrium state of a disk accreting magnetized stars using axisymmetric magnetohydrodynamic (MHD) simulations. In this ``locked'' state, the spin-up torque balances the spin-down torque so that the net average torque on ...
Bouvier J., Camenzind M., Fendt C., Hirose S., Li J., Lovelace R. V. E., M. Long, M. M. Romanova, Nagase F., Pringle J. E., R. V. E. Lovelace, Shakura N. I., Wang Y.-M.   +12 more
core   +1 more source

Patterning the Void: Combining L‐Systems with Archimedean Tessellations as a Perspective for Tissue Engineering Scaffolds

Advanced Functional Materials, EarlyView.
This study introduces a novel multi‐scale scaffold design using L‐fractals arranged in Archimedean tessellations for tissue regeneration. Despite similar porosity, tiles display vastly different tensile responses (1–100 MPa) and deformation modes. In vitro experiments with hMSCs show geometry‐dependent growth and activity. Over 55 000 tile combinations
Maria Kalogeropoulou, Kenny A. van Kampen, Pierpaolo Fucile, Carlos Mota, Lorenzo Moroni   +4 more
wiley   +1 more source

Multiband Switchable Microwave Absorbing Metamaterials Based on Reconfigurable Kirigami–Origami

Advanced Functional Materials, EarlyView.
A reconfigurable metamaterial featuring tunable microwave‐absorbing and load‐bearing performance is proposed. Stretchable kirigami and bistable origami configurations are integrated as actuating components, and the synergistic deformation mechanisms are systematically analyzed.
Weimin Ding, Zhong Zhang, Zeang Zhao, Shengyu Duan, Panding Wang, Xiaogang Guo, Hongshuai Lei, Daining Fang   +7 more
wiley   +1 more source

Type I migration in optically thick accretion discs

, 2012
We study the torque acting on a planet embedded in an optically thick accretion disc, using global two-dimensional hydrodynamic simulations. The temperature of an optically thick accretion disc is determined by the energy balance between the viscous ...
Alibert, Ayliffe, Ayliffe, Baruteau, Birnstiel, de Val-Borro, Goldreich, Goldreich, Hartmann, Hasegawa, Hubeny, Inaba, K. Yamada, Kitamura, Kley, Li, Lin, Lo Curto, Masset, Masset, Masset, Mayor, Mizuno, Mordasini, Morohoshi, Muto, Paardekooper, Paardekooper, Paardekooper, Paardekooper, Paardekooper, Paardekooper, Paardekooper, Pringle, S. Inaba, Shakura, Ségransan, Tanaka, Toro, Ward, Ward, Ward, Yamada   +42 more
core   +1 more source

Bio‐Friendly Artificial Muscles Based on Carbon Nanotube Yarns and Eutectogel Derivatives

Advanced Functional Materials, EarlyView.
Solid‐state artificial muscles based on coiled commercial carbon nanotube yarns coated with eutectogel derivatives exhibit unipolar actuation through selective ion intercalation. Combining polyanionic and polycationic gels enables enhanced contractile stroke and high energy density.
Gabriela Ananieva, Cédric Vancaeyzeele, Giao T.M. Nguyen, Daniel Aguilera‐Bulla, Mathieu Pinault, Frédéric Vidal, Cédric Plesse   +6 more
wiley   +1 more source

Combining the effects of undersized drilling and bone density on implant insertion torque

Brazilian Journal of Oral Sciences, 2017
Aim: This study evaluated the influence of surgical undersized drilling on insertion torque of an implant system at low bone density. Methods: Implant site preparations were made in two polyurethane foam blocks with different densities, where two ...
Bernardo Alievi Camargo, Daniel Becker Nunes, Aloísio Oro Spazzin, Leonardo Federizzi, Christian Schuh, Érica Alves Gomes   +5 more
doaj   +1 more source

Three-dimensional Disk-Planet Torques in a Locally Isothermal Disk

, 2010
We determine an expression for the Type I planet migration torque involving a locally isothermal disk, with moderate turbulent viscosity (~0.0005 < alpha < ~0.05), based on three-dimensional nonlinear hydrodynamical simulations.
Baruteau, Casoli, D'Angelo, D'Angelo, Davis, Gennaro D'Angelo, Godon, Jang-Condell, Kley, Li, Lubow, Lynden-Bell, Masset, Masset, Matsumura, Menou, Ogilvie, Rafikov, Stephen H. Lubow, Tanaka, Ward, Yu   +21 more
core   +1 more source

Exploiting Two‐Photon Lithography, Deposition, and Processing to Realize Complex 3D Magnetic Nanostructures

Advanced Functional Materials, EarlyView.
Two‐photon lithography (TPL) enables 3D magnetic nanostructures with unmatched freedom in geometry and material choice. Advances in voxel control, deposition, and functionalization open pathways to artificial spin ices, racetracks, microrobots, and a number of additional technological applications.
Joseph Askey, Arjen van den Berg, Sandra Ruiz Gomez, Claire Donnelly, Dirk Grundler, Sam Ladak   +5 more
wiley   +1 more source

A Novel Stator Tooth Shape of Axial Flux Permanent Magnet Motors Based on Soft Magnetic Composite for Torque Density Enhancement

IEEE Access
This paper proposes a pyriform stator tooth body shape of axial flux permanent magnet motors (AFPMMs) based on soft magnetic composite (SMC) to enhance torque density.
Lijian Wu, Xiaofeng Ren, Fangwei Zhao, Zhenyang Zhang, Shuai Ge, Yao Li   +5 more
doaj   +1 more source

Flux-Switching Permanent Magnet Machine with Phase-Group Concentrated-Coil Windings and Cogging Torque Reduction Technique

Energies, 2018
We herein propose a novel high-torque-density flux-switching permanent magnet machine (FSPMM) which adopted phase-group concentrated-coil (PGCC) winding and a cogging torque reduction technique. The PGCC winding was applied to increase the torque density.
Jung-Woo Kwon, Jin-hee Lee, Wenliang Zhao, Byung-Il Kwon   +3 more
doaj   +1 more source