Results 91 to 100 of about 229,679 (336)

Accurate lubrication corrections for spherical and non-spherical particles in discretized fluid simulations [PDF]

, 2013
Discretized fluid solvers coupled to a Newtonian dynamics method are a popular tool to study suspension flow. As any simulation technique with finite resolution, the lattice Boltzmann method, when coupled to discrete particles using the momentum exchange
Harting, Jens, Janoschek, Florian, Toschi, Federico   +2 more
core   +2 more sources

Topology and Material Optimization in Ultra‐Soft Magneto‐Active Structures: Making Advantage of Residual Anisotropies

Advanced Materials, EarlyView.
Residual magnetization induces pronounced mechanical anisotropy in ultra‐soft magnetorheological elastomers, shaping deformation and actuation even without external magnetic fields. This study introduces a computational‐experimental framework integrating magneto‐mechanical coupling into topology optimization for designing soft magnetic actuators with ...
Carlos Perez‐Garcia, Rogelio Ortigosa, Jesús Martínez‐Frutos, Daniel Garcia‐Gonzalez   +3 more
wiley   +1 more source

Lubricant and Lubricant Additives

, 2021
Lubricants have been used by humans for thousands of years in their simple machines such as wheel-axle bearings and sledges. Modern machines are much more complicated and are composed of many different machine elements which are in relative motion under varying loads, speeds and temperatures.
openaire   +3 more sources

Breaking the 2‐nm Barrier in Hard Disk Drives Using Monolayer Amorphous Carbon Overcoats

Advanced Materials, EarlyView.
The rapid growth of AI has increased demand for large‐scale data storage, making HDDs indispensable in data centers. Increasing areal storage density is crucial, but limited by the traditional carbon overcoats (COC). Monolayer amorphous carbon (MAC) offers a superior alternative.
Hongji Zhang, Artem K. Grebenko, Dmitrii Litvinov, Wenwen Zheng, Konstantin V. Iakoubovskii, Sergey Y. Grebenchuk, Anna Makarova, Alexander Fedorov, Andrei Starkov, Carlo M. Orofeo, Denis V. Vyalikh, Mario Lanza, Maciej Koperski, Kostya S. Novoselov, Chee‐Tat Toh, Barbaros Ӧzyilmaz   +15 more
wiley   +1 more source

Boundary lubrication: Revisited [PDF]

A review of the various lubrication regimes, with particular, emphasis on boundary lubrication, is presented. The types of wear debris and extent of surface damage is illustrated for each regime.
Jones, W. R., Jr.
core   +1 more source

Homogenization of the Equations Governing the Flow Between a Slider and a Rough Spinning Disk [PDF]

, 2009
We have analyzed the behavior of the flow between a slider bearing and a hard-drive magnetic disk under two types of surface roughness. For both cases the length scale of the roughness along the surface is small as compared to the scale of the slider, so
Cargill, D., Fehribach, J., Lin, T-S, Please, Colin, Raymond, C., Schwendeman, D., Skorczewski, T., Tilley, B., Wang, J., Witelski, T., Wrobel, J., Zhang, S.   +11 more
core  

Microscale Fluid Behavior during Cryo-EM Sample Blotting [PDF]

, 2020
Blotting has been the standard technique for preparing aqueous samples for single-particle electron cryo-microscopy for over three decades. This technique removes the excess solution from a transmission electron microscope grid by pressing absorbent ...
Armstrong, Maxim, Fletcher, Daniel A., Glaeser, Robert M., Gomez, Salvador, Han, Bong-Gyoon, Turner, John   +5 more
core   +1 more source

Porous Bi2S3 Bulk With Excellent Thermoelectric Performance by Solid States Replacement and Low Melting‐Point Metal Volatilization

Advanced Materials, EarlyView.
By introducing FeCoNi medium‐entropy alloy, the bismuth sulfide (Bi2S3) material achieves a record‐high ZT of 1.1 at 773 K, owing to the solid‐states replacement reaction and the volatilization of low melting‐point metal. This strategy is also applicable to other sulfur‐based thermoelectric materials.
Zi‐Yuan Wang, Jun Guo, Yi‐Xin Zhang, Hao Liang, Xing Yang, Rafal E. Dunin‐Borkowski, Fengshan Zheng, Lei Jin, Jing Feng, Zhen‐Hua Ge   +9 more
wiley   +1 more source

Near-zero-wear with super-hard WB4 and a self-repairing tribo-chemical layer

Communications Materials
Achieving near-zero-wear remains a major challenge in mechanical engineering and material science. Current ultra-low wear materials are typically developed based on the self-consumption strategy.
Guixin Hou, Shengyu Zhu, Hui Tan, Wenyuan Chen, Jiao Chen, Qichun Sun, Juanjuan Chen, Jun Cheng, Peixuan Li, William Yi Wang, Jun Yang, Weimin Liu   +11 more
doaj   +1 more source

Discussion: “Lubrication Characteristics of Involute Spur Gears: A Theoretical Investigation” (Gatcombe, E. K., 1945, Trans. ASME, 67, pp. 177–185) [PDF]

, 1945
D. D. Fuller
openalex   +1 more source