Results 51 to 60 of about 22,870 (230)

Curvature‐Tuned Friction at Electrified Ionic Liquid Interfaces

Advanced Functional Materials, EarlyView.
Graphene curvature plays a key role in friction electrotunability at single‐asperity contacts lubricated by ionic liquids. A 9 nm radius yields stronger tunability than larger radii, with distinct friction coefficients at low and high loads indicating a shift in the slippage plane.
Wei Song, Md Ashiqur Rahman, Qianlu Zheng, Nathaniel Hawthorne, James D. Batteas, Rui Qiao, Rosa M. Espinosa‐Marzal   +6 more
wiley   +1 more source

Hydrodynamic lift on bound vesicles

, 1999
Bound vesicles subject to lateral forces such as arising from shear flow are investigated theoretically by combining a lubrication analysis of the bound part with a scaling approach to the global motion.
D. A. Hammer, E. Evans, I. Cantat, I. Durand, J. O. Rädler, M. Kraus, P. Olla, R. Bruinsma, R. Lipowsky, R. Lipowsky, R. M. Servuss, U. Seifert, U. Seifert, Udo Seifert   +13 more
core   +1 more source

Accelerated Stokesian Dynamics simulations [PDF]

, 2001
A new implementation of the conventional Stokesian Dynamics (SD) algorithm, called accelerated Stokesian Dynamics (ASD), is presented. The equations governing the motion of N particles suspended in a viscous fluid at low particle Reynolds number are ...
Brady, John F., Sierou, Asimina
core   +1 more source

Experimental Investigation of a Highly Loaded Half-Journal Bearing

Lubricants
A dedicated experimental rig is presented for a half-journal bearing operating under highly loaded, well-controlled hydrodynamic lubrication conditions relevant to turbomachinery.
James Layton, Humberto Medina, Hasna Fadhila, Benjamin C. Rothwell, Stephen Ambrose, Katrina Farbrother, Carol Eastwick   +6 more
doaj   +1 more source

Identifying the optimal interfacial parameter correlated with hydrodynamic lubrication

Friction, 2016
The effects of boundary (liquid/solid) slip on hydrodynamics are well recognized. However, it is extremely difficult to quantify in-situ boundary slip in a lubrication contact.
Liang Guo, Patrick Wong, Feng Guo
doaj   +1 more source

Topological Point Defects in SmC* Liquid Crystals Under Mechanical Disturbance

Advanced Materials Interfaces, EarlyView.
Tangetial air jet shear inducess island formation and nucleates topological point defects in uniform SmC films. Island bounded by edge dislocation loops shrink and transform into isolated point defects under continued shear. Mechanical perturbatio provides a controllable route for defect engineering in smectric liquid crystal thin films.
Gunganist Kongklad, Vandana Molahalli, Apichart Pattanaporkratana, Nattaporn Chattham   +3 more
wiley   +1 more source

Translational and rotational friction on a colloidal rod near a wall [PDF]

, 2010
We present particulate simulation results for translational and rotational friction components of a shish-kebab model of a colloidal rod with aspect ratio (length over diameter) $L/D = 10$ in the presence of a planar hard wall.
Dhont J. K. G., Faxén H., J. T. Padding, W. J. Briels   +3 more
core   +2 more sources

Anti‐Slip Material‐Based Strategies and Approaches

Advanced Materials Technologies, EarlyView.
This review highlights the principle mechanisms of slipping at the microscale, linking contact mechanics with a friction behavior model for surface interfaces. Main strategies to develop anti‐slip properties to the surfaces are discussed alongside standardized testing approaches.
Sogand Abbaspoor‐Zanjani, Carlo Antonini, Teresa Gatti, Mengjiao Wang   +3 more
wiley   +1 more source

Transient elastohydrodynamic lubrication analysis of a novel metal-on-metal hip prosthesis with a non-spherical femoral bearing surface

, 2011
Effective lubrication performance of metal-on-metal hip implants only requires optimum conformity within the main loaded area, while it is advantageous to increase the clearance in the equatorial region.
Anissian H.L., Bergmann G., Calonius O., Catelas I., Dobbs H.S., Dowson D., Firkins P.J., Gao LM, Grubl A., Hu X.Q., Jacobs J.J., Lee R., Liu F., Meng Q.E., Meng QE, Rieker C., Skipor A.K., Tuke M.A., Venner C.H., Wang F.C., Yao J.Q.   +20 more
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