Results 191 to 200 of about 265,857 (305)

Mechanism of Solid Solution‐Driven Texture Induced by Ag Doping in YBCO Superconductor

open access: yesAdvanced Science, EarlyView.
Ag‐doped YBCO with a designed concentration gradient is produced by dual‐material co‐extrusion and freeze‐drying. During annealing, Ag+ ions diffuse into Y123, substituting for Cu(1) and inducing c‐axis relaxation. This leads to the formation of [001]‐oriented YBCAO, creating a coherent interface that templates the textured growth of Y123. Consequently,
Fenyan Zhao   +4 more
wiley   +1 more source

In‐Wheel Piezoelectric DC Power Generator With Zero Resistive Torque

open access: yesAdvanced Science, EarlyView.
In this paper, we present a wheel‐shaped direct‐current piezoelectric generator (DC‐PG) that fundamentally overcomes these constraints by producing phase‐stable DC electricity directly from rolling motion. By embedding this system into suitcase wheels, we demonstrated a fully integrated real‐time location tracking system powered solely by mechanical ...
Hyun Soo Kim   +19 more
wiley   +1 more source

Advances in Turbulent Drag Reduction

open access: yesAdvances in Mechanical Engineering, 2015
Bo Yu   +5 more
doaj   +1 more source

Acceleration is the key to drag reduction in turbulent flow. [PDF]

open access: yesProc Natl Acad Sci U S A
Ding L   +4 more
europepmc   +1 more source

Slime-Groove Drag Reduction Characteristics and Mechanism of Marine Biomimetic Surface. [PDF]

open access: yesAppl Bionics Biomech, 2022
Yan M   +6 more
europepmc   +1 more source

Magneto‐X Effects in Magnetic Soft Materials and Their Applications

open access: yesAdvanced Science, EarlyView.
This review systematically explores magnetic soft materials (MSMs), a novel class of composites that transform under magnetic fields. It catalogs fundamental “Magneto‐X” effects, classifies materials by their matrix and magnetic fillers, and highlights transformative applications in soft robotics, biomedical devices, flexible electronics, etc. Finally,
Ziyin Xiang   +5 more
wiley   +1 more source

Experimental study on the drag reduction performance of sodium alginate in saline solutions. [PDF]

open access: yesSci Rep
Cheng Z   +11 more
europepmc   +1 more source

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