Tunable Sound Absorption via Evanescent‐Wave Coupling in Asymmetric Bilayer Metasurfaces
Advanced Science, EarlyView.Tunable sound absorption is realized through a bilayer metasurface system governed by evanescent‐wave coupling. This work demonstrates that such evanescent‐wave coupling provides a controllable scattering channel that destructively interferes with the specular reflection.
Pyung Sik Ma, Hyung Jin Lee
wiley +1 more source
Stability analysis and noise reduction of a cone-type poppet valve in an aero-hydraulic system. [PDF]
Sci RepChen W, Chen Y, Xu Y, Zhang L.
europepmc +1 more source
Creep recovery and stress relaxation tests of 6061-0 aluminum [PDF]
The investigation of creep recovery and stress relaxation in aluminum using a closed loop servo-hydraulic test system is described. The practicality of a computer controlled test system for constant plastic strain rate tension tests is demonstrated.
Wu, H. C., Yao, J. C.
core +1 more source
Advanced Science, EarlyView.Increasing the density and homogeneity of soft magnetic composites are critical for achieving high power density and low core loss. This work proposes a novel strategy by combining ultrasonic‐assisted pressing and cold pressing. In this line, the density and permeability of magnetic core have been increased a lot, while the core loss is decreased ...
Xiaoying Huang +15 more
wiley +1 more source
Fault analysis and fault degree evaluation via an improved ResNet method for aircraft hydraulic system. [PDF]
Sci RepShen K, Zhao D.
europepmc +1 more source
In‐Wheel Piezoelectric DC Power Generator With Zero Resistive Torque
Advanced 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
Energy-Efficient Hydraulic System for Hexapod Robot Based on Two-Level Pressure System for Oil Supply. [PDF]
Biomimetics (Basel)Dong J, Jin B, Liu Z, Chen L.
europepmc +1 more source
Reprogrammable Phase‐Transition Composites for Adaptive Dynamic Shape Morphing
Advanced Science, EarlyView.This paper reports a bio‐inspired reprogrammable phase‐transition composites that uses the stiffness change induced by reversible solid‐liquid phase transition to program and regulate the material deformation actuated by reversible liquid‐vapor phase transition, thereby achieving adaptive dynamic deformation in a controllable manner, and enabling ...
Yiding Zhong +8 more
wiley +1 more source
Multiple quadrants displacement tracking control of independent metering electro-hydraulic system. [PDF]
Sci RepMeng W +4 more
europepmc +1 more source
Broadband Achromatic Programmable Electromagnetic Camouflage via Fluidic‐Accessible Metasurface
Advanced Science, EarlyView.A fluidic access metasurface enables dynamic, broadband electromagnetic illusions. By physically reconstructing conductive patterns with liquid metal, the metasurface achieves real‐time, pixel‐level control over phase dispersion. This allows for the programmable generation of arbitrary strong scattering point arrays, effectively deceiving high ...
Shipeng Liu +14 more
wiley +1 more source