Results 61 to 70 of about 1,129,305 (370)
Forward Brillouin scattering acoustic impedance sensor using thin polyimide-coated fiber.
Optics Letters, 2018 The standard single-mode fiber has been demonstrated as an optomechanical sensor recently to measure the acoustic impedances of surrounding liquids by means of the generation and detection of forward-stimulated Brillouin scattering (FSBS).
D. Chow, L. Thévenaz
semanticscholar +1 more source
W‐Based Thin Film Metallic Glasses Doped with Ni, Zr, and B for Industrial Applications
Advanced Engineering Materials, EarlyView.This work is the first to deal with a comprehensive comparison of two metallic glass systems, W–Zr–B and W–Ni–B, in terms of their suitability for specific industrial applications. Their mechanical and tribological properties are compared and discussed in combination with structural homogeneity on different types of technically relevant substrates and ...
Zbynek Studeny +5 more
wiley +1 more source
Acoustic ground impedance meter [PDF]
, 1984 A method and apparatus are presented for measuring the acoustic impedance of a surface in which the surface is used to enclose one end of the chamber of a Helmholz resonator. Acoustic waves are generated in the neck of the resonator by a piston driven by
Zuckerwar, A. J.
core +1 more source
Influence of viscoelasticity and interfacial slip on acoustic wave sensors [PDF]
, 2000 Acoustic wave devices with shear horizontal displacements, such as quartz crystal microbalances (QCM) and shear horizontally polarised surface acoustic wave (SH-SAW) devices provide sensitive probes of changes at solid-solid and solid- liquid interfaces.
Cowen, JA +3 more
core +1 more source
Japanese Journal of Applied Physics, 2018 The mechanical properties of living cells are known to be associated with disease states and cell function. In this study, acoustic impedance microscopy using a sapphire lens transducer with a center frequency of 320 MHz was employed to characterize the ...
R. Rahayu +7 more
semanticscholar +1 more source
Advanced Engineering Materials, EarlyView.This study presents a multimodal characterization method for a prototype metamaterial model structure that features four distinct states of mechanical stiffness and electrical resistivity. Through simulations and experiments, it uncovers insights into the structural behavior, the correlation between changes in electrical resistivity and mechanical ...
Rebecca Kose +3 more
wiley +1 more source
A novel technique for measuring the reflection coefficient of sound absorbing materials [PDF]
, 2000 A new method to measure the acoustic behaviour of sound absorbing material in an impedance tube is presented. The method makes use of a novel particle velocity sensor, the microflown, and a microphone.
Bree, H-E. de +2 more
core +6 more sources
A Surface Impedance-Based Three-Channel Acoustic Metasurface Retroreflector [PDF]
, 2018 We propose the design and measurement of an acoustic metasurface retroreflector that works at three discrete incident angles. An impedance model is developed such that for acoustic waves impinging at -60 degrees, the reflected wave is defined by the ...
Chen Shen +3 more
semanticscholar +1 more source
Advanced Engineering Materials, EarlyView.Ag cluster‐modified K0.5Na0.5NbO3 acts as an efficient piezocatalyst for electrochemical N2 reduction, enhanced by built‐in electric fields under mechanical actuation. Comparative studies between static and actuated electrodes reveal improved performance under dynamic conditions.
Benedict Witulski +7 more
wiley +1 more source
Investigation of sound propagation in a duct with a mean temperature gradient [PDF]
, 2014 This paper presents an analytical and numerical investigation of an impedance tube in the presence of a mean temperature gradient. Full Navier-Stokes simulation of the acoustic wave propagations through an impedance tube in the presence of a mean ...
Aygun, Haydar
core