Results 81 to 90 of about 47,269 (302)
Flexoelectrically Induced Polar Topology in Twisted SrTiO3 Membranes
Advanced Materials, EarlyView.Twisted SrTiO3 bilayers host polar vortices of flexoelectric origin, revealed through combined experiment and theory. By reconstructing polarization from the toroidal moment of strain gradients, the work establishes a 3D chiral state with broken inversion and mirror symmetries.
Isabel Tenreiro +13 more
wiley +1 more source
Intelligent modelling and control with fatigue reduction for fes induced knee joint of hemiplegic for rehabilitation [PDF]
, 2017 Functional electrical stimulation (FES) is one of the treatment for the people with stroke such as hemiplegic body (half body paralysed) by applying small charges of electricity to the muscle to induce the movement.
Mohamed Nasir, Noorhamizah
core
Evolution of constrained layer damping using a cellular automaton algorithm
, 2008 Constrained layer damping (CLD) is a highly effective passive vibration control strategy if optimized adequately. Factors controlling CLD performance are well documented for the flexural modes of beams but not for more complicated mode shapes or ...
Adamatzky A. +8 more
core +1 more source
Intelligent Acousto‐Electrical Metamaterials (IAM) for Sound Source Detection
Advanced Materials, EarlyView.Our proposed metamaterial concept enables sound source detection using a single material, in contrast to conventional arrays that require dozens or even hundreds of transducers. We show that the coupled acoustic–vibrational–electrical responses in piezoelectric metamaterials give rise to topology‐governed charge transport, producing distinct voltage ...
Victor Couëdel +7 more
wiley +1 more source
Coupling of Flexural and Longitudinal Damped Vibration in a Two-Layered Beam
Shock and Vibration, 1998 In dynamics, the effect of varying the constitutive materials’ thickness of a two-layered beam is investigated. Resonance frequencies and damping variations are determined.
F. Pourroy, S. Shakhesi, P. Trompette
doaj +1 more source
Advanced Materials, EarlyView.Ordered three‐dimensional anodic aluminum oxide (3D‐AAO) nanoarchitectures with longitudinal and transverse pores enable architecture‐driven metamaterials. The review maps fabrication advances, including hybrid pulse anodization, and shows how 3D‐AAO templates tailor properties across magnetism, energy, catalysis, and sensing.
Marisol Martín‐González
wiley +1 more source
Modal damping ratios of the two-degree-of-freedom acoustic model having a Helmholtz resonator
Nihon Kikai Gakkai ronbunshu, 2016 Helmholtz resonators are used in many industrial products as devices for reducing low-frequency noise. An advantage of the Helmholtz resonator is that the structure is simple and applicable to low-frequency noise for its size.
Shinichi MARUYAMA +2 more
doaj +1 more source
Japan Architectural Review, 2021 This study focuses on the first‐modal natural periods and damping ratios of buildings in the vertical direction. An auto regression and exogenous (ARX) model is used to identify each vertical natural period and damping ratio.
Takuya Kinoshita +2 more
doaj +1 more source
Advanced Materials, EarlyView.An injectable cold atmospheric plasma‐activated decellularized tumor extracellular matrix hydrogel is introduced as a post‐surgical immunoactivation platform. The engineered gel attracts residual tumor cells and induces immunogenic cell death, reshaping the tumor microenvironment and eliciting systemic antitumor immunity. In combination with checkpoint
Tianxu Fang +5 more
wiley +1 more source
On damping mechanisms in beams [PDF]
A partial differential equation model of a cantilevered beam with a tip mass at its free end is used to study damping in a composite. Four separate damping mechanisms consisting of air damping, strain rate damping, spatial hysteresis and time hysteresis ...
Banks, H. T., Inman, D. J.
core +1 more source