Results 71 to 80 of about 32,761 (288)
A Non-Linear BEM–FEM Coupled Scheme for the Performance of Flexible Flapping-Foil Thrusters
Journal of Marine Science and Engineering, 2020 Recent studies indicate that nature-inspired thrusters based on flexible oscillating foils show enhanced propulsive performance. However, understanding the underlying physics of the fluid−structure interaction (FSI) is essential to improve the ...
Dimitra E. Anevlavi +3 more
doaj +1 more source
Mechanical Demands of the Hang Power Clean and Jump Shrug: A Joint-level Perspective [PDF]
, 2016 The purpose of this study was to investigate the joint- and load-dependent changes in the mechanical demands of the lower extremity joints during the hang power clean (HPC) and the jump shrug (JS).
Geiser, Christopher +6 more
core +1 more source
Charge‐Induced Morphing Gels for Bioinspired Actuation
Advanced Functional Materials, EarlyView.This study introduces a novel electroactive actuation mechanism that enables the gel material to generate substantial and reversible shape‐changing while preserving topological and isochoric (volumetric) equivalence. The resultant morphing behaviors can mimic the movements of muscle‐driven organelles in nature, including cilia‐like beating and ...
Ciqun Xu +4 more
wiley +1 more source
Microsphere Autolithography—A Scalable Approach for Arbitrary Patterning of Dielectric Spheres
Advanced Functional Materials, EarlyView.MicroSphere Autolithography (µSAL) enables scalable fabrication of patchy particles with customizable surface motifs. Focusing light through dielectric microspheres creates well defined, tunable patches via a conformal poly(dopamine) photoresist. Nearly arbitrary surface patterns can be achieved, with the resolution set by the index contrast between ...
Elliott D. Kunkel +3 more
wiley +1 more source
Propulsive performance improvement of an inland pusher
Annals of "Dunărea de Jos" University of Galaţi: Fascicle XI Shipbuilding, 2015 The paper proposes a numerical investigation based on RANS computation for solving the free surface viscous flow around an inland pusher in order to provide a detailed insight into the critical flow regions for studying the hydrodynamic interactions ...
Florin Pacuraru +2 more
doaj
Reconfigurable Magnetic Soft Microrobot for Acoustically Triggered Targeted Bacterial Sterilization
Advanced Functional Materials, EarlyView.Reconfigurable magnetic soft microrobots integrate in situ‐grown piezoelectric zinc oxide nanorods that produce reactive oxygen species upon acoustic excitation. Combining magnetically guided transport with thermally induced planar reconfiguration, the microrobots achieve targeted delivery and enhanced bacterial sterilization through efficient on ...
Quan Gao +12 more
wiley +1 more source
Propulsive performance of two- and three-dimensional flapping flexible plates
Theoretical and Applied Mechanics Letters, 2015 The propulsive performance of two- and three-dimensional (2D and 3D) flapping flexible plates in a fluid at rest is investigated by a finite element method for the plate motion and an immersed boundary-lattice Boltzmann method for the fluid flow.
Chao Tang, Xiyun Lu
doaj +1 more source
Numerical Investigation of Frequency and Amplitude Influence on a Plunging NACA0012
Energies, 2020 Natural flight has always been the source of imagination for Mankind, but reproducing the propulsive systems used by animals that can improve the versatility and response at low Reynolds number is indeed quite complex.
Emanuel Camacho +3 more
doaj +1 more source
Advanced Functional Materials, EarlyView.This work presents a continuous linear gradient catalyst layer design, a general strategy for improving membrane electrode assemblies across electrochemical devices. Fabricated via a dual‐nozzle spray coating method, the architecture controls the Pt/carbon ratio, ionomer content and ionomer type across the catalyst layer, enhancing proton conduction ...
Shangwei Zhou +15 more
wiley +1 more source
Quiet propulsive lift for commuter airlines [PDF]
The performance of STOL or RTOL aircraft and NASA's research program to provide options for future design and certification of quiet propulsive-life transports is ...
Cochrane, J. A., Wilcox, D. E.
core +1 more source