Results 91 to 100 of about 178,633 (301)
Improved Methods to Understand and Mitigate Stick-Slip Torsional Vibrations
, 2018 In this paper, it will be shown how stick-slip vibration distributions can be used to evaluate drill string and parameter redesign options to mitigate stick-slip on the next well.
L.. Wang, G. S. Payette, J. R. Bailey
core +1 more source
Rapid Fabrication of Self‐Propelled and Steerable Magnetic Microcatheters for Precision Medicine
Advanced Materials, EarlyView.A rapid Joule heating fabrication method for the production of self‐propelling, adaptive microcatheters, with tunable stiffness and integrated microfluidic channels is presented. Demonstrated through three microrobotic designs, including a steerable guiding catheter, an untethered wave‐crawling TubeBot, and a distal‐end propelled microcatheter, it was ...
Zhi Chen +5 more
wiley +1 more source
Field Experience with an Active Stick-Slip Prevention System
, 2011 Stick-slip oscillations are self-sustained and periodic twist and torque oscillations of a rotating drill string, characterized by large and harmful variations of the downhole rotation speed.
Piero D'Ambrosio +5 more
core +1 more source
Flexible Ag2Se‐Based Thermoelectrics: Fundamentals, Processing, and Device Applications
Advanced Materials, EarlyView.Ag2Se‐based thermoelectrics are reviewed from fundamental transport mechanisms to flexible device integration. Crystal structure, defect chemistry, and band features are correlated with performance optimization strategies and scalable fabrication routes.
Jie Qin +5 more
wiley +1 more source
Stick-slip friction and wear of articular joints
, 2016 Stick-slip friction was observed in articular cartilage under certain loading and sliding conditions and systematically studied. Using the Surface Forces Apparatus, we show that stick-slip friction can induce permanent morphological changes (a change in ...
Lee, Dong Woog +2 more
core +1 more source
Signatures of Edge States in Antiferromagnetic Van der Waals Josephson Junctions
Advanced Materials, EarlyView.ABSTRACT The combination of superconductivity and magnetic textures leads to unconventional superconducting phenomena, including new correlated and topological phases. Van der Waals (vdW) materials emerge as a versatile platform for exploring the interplay between these two competing orders.
Celia González‐Sánchez +10 more
wiley +1 more source
Shiyou jixieStick⁃slip vibration is one of the main vibration forms in the process of horizontal well drilling， and usually leads to adverse consequences such as reduction of bit cutting efficiency and failure of drilling tools.
Li Wenzhe +5 more
doaj
Frictional stick-slip oscillation as a first-passage problem
, 2011 We study complex frictional stick-slip oscillations by formulating a novel first-passage time problem whose solutions are used to compute distributions of stick-slip oscillation periods, displacements, and slip durations for a generic family of ...
Y. Visell
core +1 more source
Advanced Materials, EarlyView.Template effect and kinetic control enable crystal‐phase engineering of Ru nanocrystals, granting access to either metastable fcc‐Ru or stable hcp‐Ru with distinct surface structures, thermal stabilities, and catalytic behaviors. Moreover, the hcp‐Ru can further serve as an epitaxial template to direct Pd and Rh nanocrystals into the metastable hcp ...
Jianlong He +3 more
wiley +1 more source
Advanced Materials, EarlyView.Ultrathin lithium metal anodes (≤15 µm) offer a promising route to high‐energy‐density batteries due to their high capacity and low potential. This review presents design principles for ultrathin Li, evaluates fabrication strategies, and discusses challenges in liquid and solid‐state cells.
Cheng Wang +9 more
wiley +1 more source