Results 121 to 130 of about 319,037 (305)

Self‐Assembled Inorganic Nanomembrane Tubes: Rolled‐Up Piezoelectrics for Microacoustic Wave‐Based Actuators and Sensors

Advanced Materials, EarlyView.
This study demonstrates a self‐assembly process to generate free‐standing piezoelectric nanomembranes, forming ultracompact microtubular acoustic wave sensors and actuators. The miniaturized 3D piezoelectric platform reported in this work can be applied in telecommunication, energy harvesting, and acoustofluidics. Moreover, the 3D self‐assembly can add
Raphaël C. L‐M. Doineau, Christian N. Saggau, Stefan Baunack, Thomas Gemming, Yara Abdelaal, Robert Weser, Oliver G. Schmidt, Hagen Schmidt, Andreas Winkler, Mariana Medina‐Sánchez   +9 more
wiley   +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, Haotian Lu, Jiayan Zhang, Desheng Yao, Ananya Bhardwaj, Ramiro Contreras, Karim Sabra, Xiaoyu (Rayne) Zheng   +7 more
wiley   +1 more source

Acoustic Emission Control of Compounds with Interference, Which Are Assembled by Thermal Method

Acta Technologica Agriculturae
Acoustic emission control means for tension connections are proposed. The features of the contact zone, such as the gas gap between the shaft and the bushing and the penetration of microroughnesses of the shaft surface into the bushing surface, are ...
Zenkin Mykola, Lisovets Serhii, Makatora Dmytro, Kosiba Ján   +3 more
doaj   +1 more source

Soft Ionic and Electronic Triboelectric Nanogenerators: Toward Attachable and Implantable Biomedical Applications

Advanced Materials, EarlyView.
This review provides an overview of triboelectric nanogenerator (TENG)–based biomedical applications by classifying studies into electronic and ionic systems across attachable and implantable platforms. It summarizes key material choices, device structures, and working mechanisms that characterize current TENG‐based research, and outlines six future ...
Kyongtae Choi, Jimin Park, Won Jun Song, Soohwan An, Seonggyu Choe, Byeong‐Rak Keum, Min Young Kim, Dae Hee Hwang, Young‐Geun Park, Sung‐Won Kim, Sangyul Baik, Gwang‐Bum Im, Younghoon Lee   +12 more
wiley   +1 more source

Algorithm of Water-Air Trans-Medium Communication Based on Acousto-Optic System

水下无人系统学报
To achieve underwater-aerial trans-medium uplink wireless communication, based on the laser interference detection of underwater acoustic signals, attenuation curves of acoustic signals at various water depths to the water surface and micro-vibration ...
Zhiquan ZHOU, Xingkang ZHAO, Yingnan CHEN, Jinxin HUANG, Yang ZHAO   +4 more
doaj   +1 more source

An experimental study of the properties of surface pressure fluctuations in strong adverse pressure gradient turbulent boundary layers [PDF]

Experimental data were obtained on blade self-noise generation by strong adverse-pressure-gradient attached boundary layers and by separated turbulent boundary layers that accompany stall.
Simpson, R. L.
core   +1 more source

Ultrafast Vertical Organic Electrochemical Transistors With Ion‐Permeable Conductive Polymer Top Electrodes

Advanced Materials, EarlyView.
Vertical organic electrochemical transistors (vOECTs) are limited in speed by ion‐impermeable metal electrodes that slow ion injection. Using ion‐permeable PBFDO top electrodes allows direct vertical ion injection into BBL channels, achieving high current densities (>400 A cm−2), large on/off ratios (>106), and ultrafast switching in 28 µs. This sets a
Han‐Yan Wu, Yingxue An, Luigi Fabiano, Qifan Li, Qingqing Wang, Feng Zhang, Wenlong Jin, Miao Xiong, Junpeng Ji, Ugo Bruno, Grzegorz Greczynski, Grazia Maria Lucia Messina, Xianjie Liu, Chi‐Yuan Yang, Simone Fabiano   +14 more
wiley   +1 more source

Application of Swept-Sine Excitation for Acoustic Impedance Education [PDF]

The NASA Langley Normal Incidence Tube (NIT) and Grazing Flow Impedance Tube (GFIT) are regularly employed to characterize the frequency response of acoustic liners through the eduction of their specific acoustic impedance.
Howerton, Brian M., Jones, Michael G., Vold, Havard   +2 more
core   +1 more source

Remote‐Controllable Immune‐Priming Spot Formation Via Nanocomplexed Hydrogel‐Assisted Histotripsy: Immunoasis

Advanced Materials, EarlyView.
A novel immunotherapeutic strategy combines injectable, adjuvant‐loaded hydrogels with externally controlled histotripsy to create immune‐priming sites within tumors. This approach generates millimeter‐sized immune‐activated lesions with flexible, patient‐tailored treatment scheduling, enabling precise immune activation through tumor ablation‐mediated ...
Sung Hoon Kim, Wonseok Choi, Yurim Kim, Hyeongmin Kim, Gu Won Jeong, Hyewon Park, Inchan Youn, Yoon Park, Sungmin Han, Young‐Min Kim   +9 more
wiley   +1 more source

Acoustic emission spectrum for mine hazards identification and prevention

Scientific Reports
The article investigates the problems of mine hazard prevention, identification and control. Acoustic emission signals are one of the important signs of the appearance of deformations in rocks that can cause accidents in mines.
Ivan Vassilyev, Zhassulan Mendakulov, Botakoz Imansakipova, Shynar Aitkazinova, Kaiyrtay Issabayev, Nurgul Imansakipova, Gulmira Madimarova   +6 more
doaj   +1 more source