Results 61 to 70 of about 1,265,505 (345)

Fluorine‐Free Soft Nanocomposites for High‐Speed Liquid Impact Repellence

open access: yesAdvanced Functional Materials, EarlyView.
Fluorine‐free soft nanocomposite coatings are developed using silicone oil‐mediated mechanical‐stiffness control, enabling ‘dry’ liquid‐repellent surfaces that resist high‐speed water jet impacts up to ∼60 m/s. By tuning nanoparticle loading and oil content, the coatings also achieve >90% optical transparency, amphiphobicity with impact resistance to ...
Priya Mandal   +4 more
wiley   +1 more source

Broadband suppression of aerodynamic pressure on the high-speed bluff body surface with periodic square-cavity acoustic metasurface

open access: yesAIP Advances, 2021
In this paper, a Multiphysics coupling simulation model of flow and acoustics is proposed using COMSOL software, and its results are verified by comparing with experimental results of others. Then, the aerodynamic pressure above the bluff body surface at
Min Li, Jiu Hui Wu, Xiao Yang Yuan
doaj   +1 more source

Acoustic radiation from a pulsating spherical cap set on a spherical baffle near a hard/soft flat surface

open access: yes, 2004
Radiation of sound from a spherical piston, set in the side of a rigid sphere, undergoing harmonic radial surface vibrations in an acoustic halfspace is analyzed in an exact fashion using the classical method of separation of variables.
Azarpeyvand, M., Hasheminejad, S.M.
core   +1 more source

Conductive Bonding and System Architectures for High‐Performance Flexible Electronics

open access: yesAdvanced Functional Materials, EarlyView.
This review outlines bonding technologies and structural design strategies that support high‐performance flexible and stretchable electronics. Bonding approaches such as surface‐activated bonding and anisotropic conductive films, together with system‐level architectures including buffer layers and island‐bridge structures, possess distinct mechanical ...
Kazuma Nakajima, Kenjiro Fukuda
wiley   +1 more source

Nonlinear acoustic impedance of circular vent holes in miniaturized speakers [PDF]

open access: yesJASA Express Letters
Back volume vent holes are designed to boost the low-frequency response of miniaturized electro-acoustic transducers in hearing aids and earphones. The acoustic impedance of these small vent holes considerably alters the frequency response of the speaker.
Mohammad Mohammadi
doaj   +1 more source

Sound Scattering and Its Reduction by a Janus Sphere Type [PDF]

open access: yes, 2014
Copyright © 2014 Delyia Kim et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.Sound
AVITAL, E, Kim, D, Miloh, T
core   +3 more sources

From Wafers to Electrodes: Transferring Automatic Optical Inspection (AOI) for Multiscale Characterization of Smart Battery Manufacturing

open access: yesAdvanced Functional Materials, EarlyView.
Automat optical inspection (AOI) techniques in semiconductor fabrication can be leveraged in battery manufacturing, enabling scalable detection and analysis of electrode‐ and cell‐level imperfections through AI‐driven analytics and a digital‐twin framework.
Jianyu Li, Ertao Hu, Wei Wei, Feifei Shi
wiley   +1 more source

GHz ultrasonic sensor for ionic content with high sensitivity and localization

open access: yesiScience, 2023
Summary: Sensing the ionic content of a solution at high spatial and temporal resolution and sensitivity is a challenge in nanosensing. This paper describes a comprehensive investigation of the possibility of GHz ultrasound acoustic impedance sensors to ...
Priya S. Balasubramanian, Amit Lal
doaj   +1 more source

High-overtone Bulk-Acoustic Resonator gravimetric sensitivity: towards wideband acoustic spectroscopy

open access: yes, 2015
In the context of direct detection sensors with compact dimensions, we investigate the gravimetric sensitivity of High-overtone Bulk Acoustic Resonators, through modeling of their acoustic characteristics and experiment. The high frequency characterizing
Ballandras, S.   +5 more
core   +1 more source

Accounting for convective effects in zero-Mach-number thermoacoustic models [PDF]

open access: yes, 2014
This paper presents a methodology to account for some mean-flow effects on thermo-acoustic instabilities when using the zero-Mach-number assumption. It is shown that when a computational domain is represented under the M=0 assumption, a nonzero-Mach ...
Bloxsidge   +48 more
core   +5 more sources

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