Spontaneous spinning of a magnet levitating over a superconductor
, 2003 A permanent magnet levitating over a superconductor is found to spontaneously spin, overcoming resistance to air friction. We explain the physics behind this remarkable effect.Comment: See http://physics.ucsd.edu/~jorge/spinning.html for movie clips of
D.J. Hirsch +6 more
core +1 more source
A Superlubricated Magnetically Steerable Microcatheter with Integrated Optical and Fluidic Channels
Advanced Robotics Research, EarlyView.A magnetically steerable microcatheter with integrated optical and fluidic channels is developed for multifunctional navigation in tortuous anatomical environments. A surface‐grafted hydrogel coating enables low‐friction actuation. The device demonstrates stable light and fluid delivery during magnetic manipulation, offering a compact platform for ...
Yuntian Du +5 more
wiley +1 more source
Peningkatan Peran Teknologi Friction Welding dalam Memproduksi AS Sepeda Motor Produk Industri Kecil [PDF]
, 2011  Products the axle of motorcycles produced by the method of manual forging by small industries. This production method requires a long processing time and the result shave lower torque strength values​​.
husodo, N. (nur)
core
Continuum Mechanics Modeling of Flexible Spring Joints in Surgical Robots
Advanced Robotics Research, EarlyView.A new mechanical model of a tendon‐actuated helical extension spring joint in surgical robots is built using Cosserat rod theory. The model can implicitly handle the unknown contacts between adjacent coils and numerically predict spring shapes from straight to significantly bent under actuation forces.
Botian Sun +3 more
wiley +1 more source
Vibration and Control Characteristics of Downhole Drill String System
Shiyou jixie, 2022 Stick slip vibration seriously affects the life of drill string system,prolongs the drilling cycle,and endangers the safety of staff.In order to solve the problem of stick slip vibration caused by linear torque load and friction load in drilling ...
Ma Sunan +6 more
doaj
Tribomaterial factors in space mechanism brake performance [PDF]
The asbestos/phenolic pads of Shuttle Remote Manipulator System (SRMS) brakes are unsuitable for use in long life space mechanisms because their friction decreases on extended sliding in high vacuum.
Hawthorne, H. M.
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Effect of Surface Texturing on Friction and Film Thickness under Starved Lubrication Conditions [PDF]
, 2015 Tato disertační práce se zabývá vlivem mělkých mikro-textur na tření a tloušťku filmu v mazaných nekonformních kontaktech za extrémních podmínek a za podmínek hladovění kontaktu. Měření byla realizována na tribometru v konfiguraci ball-on-disk.
Ali, Fadi
core
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 +4 more
wiley +1 more source
Velocity dependence of joint friction in robotic manipulators with gear transmissions [PDF]
, 2005 This paper analyses the problem of modelling joint friction in robotic manipulators with gear transmissions at joint velocities varying from close to zero until their maximum appearing values.
Aarts, Ronald, Jonker, Ben, Waiboer, Rob
core +2 more sources
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 +3 more
wiley +1 more source