Results 51 to 60 of about 1,736,976 (282)

Autonomous Navigation of Pollen‐Inspired Magnetic Microrobots for Biomedical Applications

Advanced Robotics Research, EarlyView.
A sunflower pollen‐inspired magnetic microrobot enables controlled rolling navigation in vessel‐like environments. Its open geometry reduces hydrodynamic drag, while vision‐based closed‐loop control, shortest‐path planning, and reinforcement learning support target‐reaching and maze navigation with microrobot‐scale accuracy, highlighting a route toward
Ali Anil Demircali, Abdurrahim Yilmaz, Meysam Keshavarz, Jinshi Zhao, Ara Darzi, Eric Yeatman, Burak Temelkuran   +6 more
wiley   +1 more source

Periodic Moving Track Analysis of Spiral Oil Wedge Journal Bearing under Dynamic Loading

Journal of Applied Fluid Mechanics, 2018
The moving track of journal bearing changes with the time in the condition of dynamic loading. The force balance equation of journal bearing is established, and the generalized Reynolds equation, the oil film thickness equation of spiral oil wedge ...
L. L. Wang, Q. L. Zeng, M. Wang, Q. G. Chen   +3 more
doaj  

Asymptotic study of electrorheological fluid in thin domain with variable power-law and Tresca boundary condition

Demonstratio Mathematica
This article investigates the stationary behavior of an incompressible non-Newtonian fluid flowing through a thin three-dimensional domain Qξ⊂R3 ${Q}^{\xi }\subset {\mathbb{R}}^{3}$ , where the viscosity follows a variable power-law model.
Amara Kaddouri, Dilmi Mohamed, Dilmi Mourad, Boulaaras Salah, Benseridi Hamid   +4 more
doaj   +1 more source

A rigorous justification of the Reynolds equation [PDF]

Quarterly of Applied Mathematics, 1987
A small parameter technique is used to derive Reynolds’ lubrication equation from the Stokes equation. The error associated with the approximation is estimated in suitable norms.
openaire   +1 more source

Wireless Precise Manipulation of Tumor Spheroids Using a Millirobot Controlled by Permanent Magnetic Traps

Advanced Robotics Research, EarlyView.
A magnetic donut‐like millirobot is developed for label‐free pick‐and‐place of a tumor spheroid wirelessly controlled by a magnetic trap. Spheroids are important 3D multicellular culture systems that recapitulate key structural and functional features of native tissues.
Yue Gao, Moonkwang Jeong, Anni G. Muñoz, Ann‐Sophia Müller, Fangchao Long, Shengqiang Zhou, Juntian Qu, Leoni A. Kunz‐Schughart, Tian Qiu   +8 more
wiley   +1 more source

Small-scale turbulent dynamo for low-Prandtl number fluid: Comparison of the theory with results of numerical simulations

Astronomy & Astrophysics
Context. During the past decades, significant progress has been made in numerical simulations of the turbulent dynamo and the theoretical understanding of turbulence.
Kopyev A. V., Il’yn A. S., Sirota V. A., Zybin K. P.   +3 more
doaj   +1 more source

Regulating Droplet Dynamics via Wormlike Micelle Networks: From Splash Suppression to Precise Confined Spreading

Advanced Science, EarlyView.
As displayed in Graphical Abstract image.tif, a molecular‐design strategy precisely tailors high‐speed droplet dynamics through programmed surfactant co‐assembly. The structural transition into an entangled wormlike micelle network completely suppresses stochastic splashing on fibrous substrates.
Shuling Liu, Beibei Xie, Xingyue Lou, Yu Deng, Lei Wang, Jiawei Li, Dongming Qi   +6 more
wiley   +1 more source

Supporting Property Analysis on Oil Film Damper Considering Wedge Clearance

Yuanzineng kexue jishu
Stability analysis is a crucial step in the design process for rotating machinery’s rotordynamics properties, which include static stability and dynamic stability.
JIA Xiangyu1, 2, , WU Tingwei1, 3, BAI Yujie1, 3, ZHANG Kai2, XU Yang2
doaj   +1 more source

Pattern‐Aware Intelligence Enables Nondestructive, Rapid Quantification of High‐Aspect‐Ratio Silicon Etching

Advanced Science, EarlyView.
Pattern‐dependent etching is converted into a physical prior for intelligent reconstruction of high‐aspect‐ratio silicon structures. Combining YOLO‐Pose feature extraction with a topography network, the framework retrieves depth, sidewall angle, and scallop texture from minimal destructive observations, enabling accurate cross‐scale metrology and near ...
Shuyan He, Lang Chen, Bo Wen, Yufeng Jin, Wei Wang   +4 more
wiley   +1 more source

Curvilinear Squeeze Film Bearing with Porous Wall Lubricated by a Rabinowitsch Fluid

International Journal of Applied Mechanics and Engineering, 2017
The present theoretical analysis is to investigate the effect of non-Newtonian lubricant modelled by a Rabinowitsch fluid on the performance of a curvilinear squeeze film bearing with one porous wall.
A. Walicka, E. Walicki, P. Jurczak, J. Falicki   +3 more
doaj   +1 more source