Results 71 to 80 of about 1,507,269 (398)
Advanced Functional Materials, EarlyView.This review explores functional and responsive materials for triboelectric nanogenerators (TENGs) in sustainable smart agriculture. It examines how particulate contamination and dirt affect charge transfer and efficiency. Environmental challenges and strategies to enhance durability and responsiveness are outlined, including active functional layers ...
Rafael R. A. Silva +9 more
wiley +1 more source
Are Buckminsterfullerenes Molecular Ball Bearings? [PDF]
The Journal of Physical Chemistry B, 2018 Buckminsterfullerenes (C60) are near-spherical molecules, which freely rotate at room temperature in the solid state and when dissolved in solution. An intriguing question arises as to whether C60 molecules can act as "molecular ball bearings," that is, preventing direct contact between two solid surfaces while simultaneously dissipating shear stress ...
Romain Lhermerout +4 more
openaire +3 more sources
Determination of ball bearing dynamic stiffness [PDF]
, 1982 The dynamic radial stiffness characteristics of rolling element bearings are currently determined by analytical methods that have not been experimentally verified.
Beatty, R. F., Rowan, B. F.
core +1 more source
Emergent Magnetic Structures at the 2D Limit of the Altermagnet MnTe
Advanced Functional Materials, EarlyView.Renewed interest in MnTe has emerged due to its intriguing altermagnetism, a newly identified form of magnetism distinct from conventional ferro‐, antiferro‐, or paramagnetism. By combining magnetic X‐ray absorption spectroscopy, scanning tunnelling microscopy, and first‐principles theory, this study reveals that thinning MnTe to the 2D limit ...
Marc G. Cuxart +10 more
wiley +1 more source
Research Development of Preload Technology on Angular Contact Ball Bearing of High Speed Spindle: A Review [PDF]
, 2020 Te Li, Petr Kolář, Xinyong Li, Jian Wu
openalex +1 more source
Evaluation of a series hybird thrust bearing at DN values to three million. 1: Analysis and design [PDF]
The analysis and design are presented of a hybrid bearing consisting of a 150-mm ball bearing and a centrifugally actuated, conical, fluid film bearing fitting an envelope with an outer radius of 86.4 mm (3.4 in.) and an inner radius of 71 mm (2.8 in ...
Eusepi, M., Gu, A., Winn, L. W.
core +1 more source
Electroactive Liquid Crystal Elastomers as Soft Actuators
Advanced Functional Materials, EarlyView.Electroactive liquid crystal elastomers (eLCEs) can be actuated via electromechanical, electrochemical, or electrothermal effects. a) Electromechanical effects include Maxwell stress, electrostriction, and the electroclinic effect. b) Electrochemical effects arise from electrode redox reactions.
Yakui Deng, Min‐Hui Li
wiley +1 more source
Apparatus and method for inspecting a bearing ball [PDF]
, 1985 A method and apparatus for inspecting the surface of a ball bearing is disclosed which includes a base having a high friction non-abrasive base scanning surface. A holding device includes a cone-shaped cup recess in which a ball element is received.
Bankston, B. F.
core +1 more source
Optical Tests of a 3.7-m diameter Liquid Mirror: Behavior under External Perturbations
, 2001 We have built and tested a 3.7-m diameter liquid mirror that rotates on a ball bearing. We have carried out extensive optical tests. We find that although the ball bearing has a poor quality, the quality of the mirror, with mercury layers 1-mm thick, is ...
Biesel +20 more
core +1 more source
From Waste to Value: Conversion of Calcium Sulfate to Vaterite via Carbon Capture and Storage
Advanced Functional Materials, EarlyView.This study introduces a new concept for carbon management that relies on the carbonation of industrial gypsum waste and yields phase‐pure vaterite at ambient conditions without any additives. The obtained vaterite is further shown to be a reactive material that develops compressive strength in aqueous suspensions like conventional cements.
Carlos Pimentel +4 more
wiley +1 more source