Results 81 to 90 of about 170,878 (300)

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

Digital Actuation Control of Soft Robotic Origami With Self‐Folding Liquid Crystal Elastomer Hinges

Advanced Functional Materials, EarlyView.
Self‐folding soft‐rigid hybrid robotic origami is enabled by liquid crystal elastomer actuators with embedded Joule heating and closed‐loop digital control. Digitally addressable hinges provide reversible and programmable transitions between distinct folded states while maintaining actuation performance at high cycle counts (over 1500).
David C. Bershadsky, Tuo Zhao, Glaucio H. Paulino, Emily C. Davidson   +3 more
wiley   +1 more source

Impact of Flux-Modulated Rotor Design on Special Flux Density Harmonics in PS-DSPM for Cogging Torque Minimization

Journal of Applied Science and Engineering
High cogging torque caused by a fluctuating magnetic flux distribution in the partitioned stator doubly salient permanent magnet machines (PS-DSPM), due to their double air gap design, limits their application despite excellent torque density ...
Wilaiphorn Nokklang, Pattasad Saengwong, Apirat Siritaratiwat, Warat Sriwannarat   +3 more
doaj   +1 more source

Meta‐Rod Mechanical Metamaterials With Programmable Reconfiguration

Advanced Functional Materials, EarlyView.
Existing mechanical metamaterials achieve programmable large deformations in planar square or cubic configurations, restricted by required complex boundary conditions. This research proposes a 1D metamaterial, Meta‐rod, with linear, bending, twisting, area, and volume deformation modes.
Atharva Pande, Lyes Kadem, Hang Xu
wiley   +1 more source

Domain Wall Rebounds Driven by Competing Entropic and Spin‐Transfer Torques in Cylindrical Nanowires

Advanced Functional Materials, EarlyView.
Domain‐wall motion in cylindrical magnetic nanowires driven by nanosecond current pulses. Low current densities efficiently displace domain walls, whereas higher currents cause rebound at the wire ends. The effect results from the interplay between spin‐transfer torque and thermally induced processes, highlighting the role of thermal gradients in ...
Elias Saugar, Jorge Marqués‐Marchán, Sara Catalano, Agustina Asenjo, Michael Foerster, Miguel Angel Niño, Manuel Vazquez, Fèlix Casanova, Arantxa Fraile Rodríguez, Rafael P. Del Real, Oksana Chubykalo‐Fesenko, Cristina Bran   +11 more
wiley   +1 more source

2D Magnetic and Topological Quantum Materials and Devices for Ultralow Power Spintronics

Advanced Functional Materials, EarlyView.
2D magnets and topological quantum materials enable ultralow‐power spintronics by combining robust magnetic order with symmetry‐protected, Berry‐curvature‐driven transport. Fundamentals of 2D anisotropy and spin‐orbit‐coupling induced band inversion are linked to scalable growth and vdW stacking.
Brahmdutta Dixit, Yifei Yang, Shawn Li, Yu‐Chia Chen, Qi Jia, Jian‐Ping Wang   +5 more
wiley   +1 more source

Semi‐flooded cooling for high torque density modular permanent magnet machines

IET Electric Power Applications
The authors investigate a semi‐flooded cooling technology for modular permanent magnet machines using flux gaps (FGs) in alternate stator teeth for extra cooling channels. The investigated machine is separated into stationary and rotational components by
W. Zhang, G. J. Li, Z. Q. Zhu, B. Ren, Y. C. Chong   +4 more
doaj   +1 more source

RM-Act 2.0: A Modular Harmonic Actuator Towards Improved Torque Density

Actuators
In modern robotics, actuator performance is fundamental to achieving efficient and durable motion, with compactness and torque density being especially critical.
Ramesh Krishnan Muttathil Gopanunni, Alok Ranjan, Lorenzo Martignetti, Franco Angelini, Manolo Garabini   +4 more
doaj   +1 more source

Additive Manufacturing of NiTi Shape Memory Alloys for Elastocaloric Applications: A Review

Advanced Functional Materials, EarlyView.
Additive manufacturing enables complex NiTi architectures that overcome key limitations in elastocaloric refrigeration, including poor heat transfer and high mechanical work input. This review surveys recent advances in LPBF‐ and DED‐fabricated NiTi shape memory alloys for elastocaloric applications, highlighting process–structure–performance ...
Ignatius Andre Setiawan, Mohammad Mehrali, Jaka Tušek, Shiva Mohajerani, Xiebin Wang, Dermot Brabazon, Mohammad Elahinia, Mehrshad Mehrpouya   +7 more
wiley   +1 more source

4D‐Printed Magneto‐Plasmonic Microrobots for Programmable Spatiotemporal De‐Icing

Advanced Functional Materials, EarlyView.
A 4D‐printing strategy is introduced to achieve programmable de‐icing devices. By aligning gold–magnetite nanofillers within a photosensitive resin, the printed structures exhibit dual magnetic and plasmonic functionalities, enabling precise spatio‐temporal ice removal through thermoplasmonic effects.
Amélie Pérot, Andrea Cosola, Eléonore Aïdonidis, Jérôme Fresnais, Clément Sanchez, Philippe Belleville, Giancarlo Rizza, Marco Faustini   +7 more
wiley   +1 more source