Results 31 to 40 of about 514,003 (233)
Synthetic Pseudo-Spin-Hall effect in acoustic metamaterials
Nature Communications, 2022 Controlling emission and propagation of acoustic waves offers new design opportunities for acoustic devices. Here the authors demonstrate such controls thanks to the emergence of a synthetic pseudo-spin in two-dimensional acoustic metamaterial.
Matthew Weiner +3 more
doaj +1 more source
Mitigating Inaudible Ultrasound Attacks on Voice Assistants With Acoustic Metamaterials
IEEE Access, 2023 Voice assistants play an important role in facilitating human–machine interactions and have been widely used in audio consumer electronic products.
Joshua S. Lloyd +3 more
doaj +1 more source
Advances in Condensed Matter Physics, 2018 There has been an explosion of interest in acoustic metamaterial in the last ten years. The tunable negative acoustic metamaterial is an important issue for designing metamaterials.
Xiao-Le Yan +3 more
doaj +1 more source
An active viscoelastic metamaterial for isolation applications
, 2014 Metamaterials are of interest due to their ability to produce novel acoustic behaviour beyond that seen in naturally occurring media. Of particular interest is the appearance of band gaps which lead to very high levels of attenuation within narrow ...
Reynolds, Matthew, Daley, Stephen
core +1 more source
AIP Advances, 2019 The photoacoustic signal from single cell plays an important role in medical diagnosis. Currently, the single-cell photoacoustic detection has limitations.
Jianning Han, Peng Yang, Shuai Tang
doaj +1 more source
Reconfigurable ultra-sparse ventilated metamaterial absorber
APL Materials, 2023 The impetus for examining ventilated acoustic metamaterials stems from the demand for increasingly efficient and adaptable noise reduction and sound wave manipulation techniques.
Yangsong Ye +6 more
doaj +1 more source
Comparison of Triply Periodic Minimal Surface Energy Absorbers Under Uniaxial Compressive Loading
Advanced Engineering Materials, EarlyView.This study investigates LCD 3D printed Triply Periodic Minimal Surface (TPMS) structures as mechanical energy absorbers. By comparing various base designs and layered combinations under uniaxial compression, it identifies that a Diamond‐Gyroid sandwich structure offers superior performance.
Sergej Grednev +2 more
wiley +1 more source
Adaptive Foam 3D Printing of Ultralight and Multifunctional Materials
Advanced Engineering Materials, EarlyView.Adaptive foam 3D printing, enabled by expandable microspheres, imparts cellular structures to thermoplastic and thermosetting polymers, manufactured through a variety of processes including fused filament fabrication, direct ink writing, digital light processing, and inkjet printing.
Nariman Rajabifar, Amir Ameli
wiley +1 more source
Acoustic Willis meta-atom beyond the bounds of passivity and reciprocity
Communications Physics, 2021 Metamaterials are designed to control unconventional wave properties in acoustic systems with a range of applications such as acoustic cloaking. Here, the authors design an active acoustic Willis metamaterial that can realize decoupled polarizabilities ...
Choonlae Cho +3 more
doaj +1 more source
Advanced Materials, EarlyView.We present SCIENCE, an in‐ear multimodal physiological monitor featuring two key innovations. Water‐triggered morphological expansion (a 2‐mm cylinder to a 9‐mm spindle) achieves conformal adaptation across complex canal geometries. Simultaneously, active biofouling mitigation disrupts cerumen barriers, reducing sensor‐skin impedance by 20%.
Shuyun Zhuo +3 more
wiley +1 more source