Results 261 to 270 of about 77,806 (312)

Acoustic noise and vibration analysis of solid state drive induced by multi-layer ceramic capacitors

Microelectronics Reliability, 2018
Abstract Solid-state drives (SSDs), popular information storage devices, are typical printed circuit board assemblies (PCBA). As is true of other PCBAs, SSDs feature many multilayer ceramic capacitors (MLCCs). SSD vibration accompanied by high-pitched noise reflects the piezoelectric properties of MLCCs, and may cause great inconvenience to users ...
Hyunwoo Kim, Dongjoon Kim, No-Cheol Park, Young-Pil Park   +3 more
openaire   +1 more source

Assessment of a solid-state bulk acoustic wave sensor to measure viscosity of Newtonian and Non-Newtonian fluids under static and flow conditions

Journal of Food Engineering, 2020
Abstract Monitoring and control of inline viscosity is crucial for process optimisation and for ensuring a high quality final product but currently this parameter is still under-utilised in the dairy industry. This study investigated a solid-state bulk acoustic wave sensor to measure the viscosity of Newtonian (oil standards) and Non-Newtonian fluids
Yuanyuan Pu, Norah O'Shea, Sean A. Hogan, John T. Tobin   +3 more
openaire   +1 more source

Evaluation of a Novel Solid-State Method for Determining the Acoustic Power Generated by Physiotherapy Ultrasound Transducers

Ultrasound in Medicine & Biology, 2008
A new secondary method of determining ultrasound power is presented based on the pyroelectricity of a thin membrane of the piezoelectric polymer, polyvinylidene fluoride (PVDF). In operation, the membrane is backed by a polyurethane-based rubber material that is extremely attenuating to ultrasound, resulting in the majority of the acoustic power ...
Bajram, Zeqiri, Jill, Barrie
openaire   +2 more sources

Defect states of acoustic waves in a two-dimensional lattice of solid cylinders

Journal of Applied Physics, 1998
Using the plane-wave expansion method, we study the propagation of acoustic waves through two-dimensional (2D) periodic composites consisting of solid cylinders in air. Defect in those structures create localized states inside the band gaps. We study both single and line defects.
openaire   +1 more source

Point defect states in 2D acoustic band gap materials consisting of solid cylinders in viscous liquid

Journal of Physics D: Applied Physics, 2008
We investigated point defect states in two-dimensional acoustic band gap materials consisting of steel cylinders in liquid with viscous damping. Numerical results show that when the viscous penetration depth is comparable to the structural length scale, point defect states fall in large complete acoustic band gaps.
Xin Zhang, Huang Dan, Fugen Wu, Zhengyou Liu   +3 more
openaire   +1 more source

Acoustic Shock Wave-Induced Solid-State Fusion of Nanoparticles: A Case Study of the Conversion of One-Dimensional Rod Shape into Three-Dimensional Honeycomb Nanostructures of CdO for High-Performance Energy Storage Materials

Inorganic Chemistry, 2023
Herein, we describe the solid-state fusion of rod-shaped to honeycomb-shaped cadmium oxide particles (CdO NPs) caused by the process of repeated exposure to acoustic shock waves. Significant changes have been observed in structurally and morphologically dependent properties.
Sivakumar Aswathappa, Lidong Dai, S. Sahaya Jude Dhas, S. A. Martin Britto Dhas, Sourav Laha, Raju Suresh Kumar, Abdulrahman I. Almansour   +6 more
openaire   +2 more sources

Landau-Placzek Model of Light Scattering from Acoustic Plasma Waves in Solid State

physica status solidi (b), 1997
The general Landau-Placzek theory of quasielastic Raman scattering is applied to p-type semiconductor samples under the action of continuous laser illumination that produces intervalence band photoexcitation. The hydrodynamical theory of high-frequency fluctuations in a two-component system with interchange of particles is delivered taking into account
openaire   +1 more source

Chemo-Mechanics of Silicon Anodes Via Operando Acoustic Transmission in Solid State Batteries

ECS Meeting Abstracts
Silicon (Si) anodes paired with solid electrolytes have recently risen as a promising energy storage solution for energy-dense Li batteries. However, Si lithiation and delithiation can exacerbate electrochemical degradation due to its high mechanical dynamics, especially against a solid electrolyte.
Kerry Sun, Gunnar Thorsteinsson, Daniel A. Steingart   +2 more
openaire   +1 more source

Solid state acoustic wave sensors for real‐time in‐line measurement of oil viscosity

Sensor Review, 2008
PurposeThis paper aims to determine the important role of acoustic wave devices in sensing applications such as automotive applications, industrial applications and commercial applications.Design/methodology/approachThe paper provides a comprehensive overview of acoustic wave technology and highlights an example of one commercial implementation of its ...
openaire   +1 more source

Use of Invariant Combinations of Parameters Characterizing Acoustic Emission in Diagnostics of Prefracture States of Solids

Russian Journal of Nondestructive Testing, 2002
The paper is devoted to the diagnostics of solids based on deviations of invariant combinations of measured acoustic-emission (AE) parameters from their stable values. Introduction of an informative AE parameter susceptible to transitions between stages of aw generation has been justified.
openaire   +1 more source