Results 111 to 120 of about 2,250,140 (346)

Thin film lubrication in the past 20 years

Friction, 2016
Thin film lubrication (TFL), a lubrication regime that fills the gap between boundary lubrication (BL) and elastohydrodynamic lubrication (EHL) regimes, was proposed 20 years ago.
Liran Ma, Jianbin Luo
doaj   +1 more source

Boundary mode lubrication of articular cartilage with a biomimetic diblock copolymer

Proceedings of the National Academy of Sciences of the United States of America, 2019
Significance Lubricin is a glycoprotein that protects cartilage in weight-bearing joints under boundary mode conditions, which defines the conditions under which physical cartilage damage takes place. The natural expression of lubricin decreases with age,
Zhexun Sun, E. Feeney, Ya Guan, Sierra G Cook, D. Gourdon, L. Bonassar, D. Putnam   +6 more
semanticscholar   +1 more source

A Proof‐of‐Concept Assessment of a Novel Wearable Eyelid Muscle Device: A Pre‐Clinical Animal Cadaver Study for Eyelid Closure Restoration

Advanced Robotics Research, EarlyView.
This article introduces a soft wearable eyelid sling device incorporating a hydraulic soft artificial muscle (SAM) for achieving complete closure of an eyelid. The SAM is driven by a cam mechanism that provides a displacement profile closely matched with those of a healthy eyelid.
Patrick Pruscino, Phuoc Thien Phan, James Davies, Bibhu Sharma, Tianruo Guo, Chi Cong Nguyen, Nigel H. Lovell, Thanh Nho Do   +7 more
wiley   +1 more source

A tribological studies of graphite solid lubrication effect on UHMW polyethylene in silicone oil lubricated conditions

MATEC Web of Conferences, 2017
Recent advances in surface engineering and solid lubrication technologies offer unique possibilities for better controlling friction and wear under boundary or marginally lubricated rolling, sliding or rotating contact conditions.
Jabłoński Piotr, Patalas Adam, Czajka Piotr   +2 more
doaj   +1 more source

Improved boundary lubrication with formulated C-ethers [PDF]

A comparison of five recently developed C-ether-formulated fluids with an advanced formulated MIL-L-27502 candidate ester is described. Steady state wear and friction measurements were made with a sliding pin on disk friction apparatus.
Loomis, W. R.
core   +1 more source

Hard‐Magnetic Soft Millirobots in Underactuated Systems

Advanced Robotics Research, EarlyView.
This review provides a comprehensive overview of hard‐magnetic soft millirobots in underactuated systems. It examines key advances in structural design, physics‐informed modeling, and control strategies, while highlighting the interplay among these domains.
Qiong Wang, Zixuan Zhang, Bingyan Li, Junkai Wang, Hongcheng Gu   +4 more
wiley   +1 more source

Breakdown Processes of Boundary Films Formed by Oiliness Additives

Tribology Online, 2011
Breakdown processes of boundary films formed by lubricating oils containing oiliness additives were studied in a steel-mercury interface under quasi-static loading.
Ken Nakano, Kazuyoshi Manabe
doaj   +1 more source

Particle motion between parallel walls: Hydrodynamics and simulation [PDF]

, 2010
The low-Reynolds-number motion of a single spherical particle between parallel walls is determined from the exact reflection of the velocity field generated by multipoles of the force density on the particle’s surface.
Brady, John F., Swan, James W.
core  

UTact: Underwater Vision‐Based Tactile Sensor with Geometry Reconstruction and Contact Force Estimation

Advanced Robotics Research, EarlyView.
Embedded flexible sensing technologies advance underwater soft robotics, yet most systems still suffer from hysteresis and limited perceptiveness. Instead, vision‐based tactile sensors provide reliable and rapid feedback essential for complex underwater tasks.
Qiyi Zhang, Zonghao Zuo, Haoxuan Wang, Bin Liu, Yilidusi Yilihamu, Li Wen   +5 more
wiley   +1 more source

Molecular behaviors in thin film lubrication—Part two: Direct observation of the molecular orientation near the solid surface

Friction, 2019
Over the past twenty years, thin film lubrication (TFL) theory has been used to characterize the molecular behaviors in lubrication films thinner than 100 nm, effectively bridging the gap between elastohydrodynamic lubrication and boundary lubrication ...
Ming Gao, Haoyu Li, Liran Ma, Yuan Gao, Linwei Ma, Jianbin Luo   +5 more
doaj   +1 more source