Results 161 to 170 of about 192,617 (260)

Absorption of Broadband Low‐Frequency Sound Beyond the Thermodynamics Limit: An Acoustic Resonator With Magnetic Bearing

Advanced Science, EarlyView.
This work presents a magnetic‐bearing acoustic resonator that overcomes the thermodynamics limit of sound absorption. By introducing tunable negative stiffness, it achieves broadband low‐frequency absorption within a compact cavity, far exceeding the performance achievable by classic mass‐tuned designs.
Ying Hu, Zhe Zhang, Bohua Huang, Xue Han, Hallam Bastin Kilcoyne, Lixi Huang   +5 more
wiley   +1 more source

High-Performance Iontronic Hydrogel Acoustic Sensor for Low-Frequency Underwater Sound Detection and Intelligent Recognition. [PDF]

Research (Wash D C)
Zhao J, Zhou H, Fu T, Wang H, Zhang T, Li L.   +5 more
europepmc   +1 more source

Wearable Electro‐Thermal Haptic Stimulator Driven by a Self‐Powered Tactile Sensor for Realistic Stimulus Replication

Advanced Science, EarlyView.
We present a stimulus‐replicating system combining a tactile sensor with a wearable Peltier thermotactile module and concentric electrotactile electrode. Signals encoding pressure and temperature drive the stimulators to reproduce mechano‐thermal cues on the skin. AlN/PDMS encapsulation and SA/LA PSA ensure mechanical compliance and thermal efficiency.
Ey‐In Lee, Chae‐Young Kang, Kyuhyun Hwang, Jongbaeg Kim, Jin‐Woo Park   +4 more
wiley   +1 more source

A New Multi-Modal Data Fusion Framework for Delamination Detection in Concrete Bridge Decks. [PDF]

Sensors (Basel)
Rashidi M, Ghazimoghadam S, Mousavi V, Dorafshan S, Bozorg B.   +4 more
europepmc   +1 more source

Polarization Engineering in Vinylene‐Linked COFs Toward Efficient Neuromorphic Computing

Advanced Science, EarlyView.
A vinyl‐linked covalent organic framework (COF‐DIBPY) was synthesized on a conductive substrate for memristor applications. Redox reactions and bromide migration enable low‐voltage (0.5V) conductance switching with high analog on/off ratio (15.7). The device was further integrated into a speech emotion recognition system for acoustic simulation and ...
Hao Wang, Lei Zhao, Haoyuan Yao, Qiongshan Zhang, Fuzhen Xuan, Bin Zhang   +5 more
wiley   +1 more source

Psychophysiological effects of low-frequency sound mediated by room size, room shape, and stimulus duration. [PDF]

Front Cognit
Oomen P, Geffen R, Gentile D, Atassi N, Farran B, Braun C, Cuevas Villanueva V, Nadiradze L, Csanád M, Baker AV.   +9 more
europepmc   +1 more source

Stabilized Cubic GeTe With Matched Grain‐Boundary Networks and Band Convergence for High‐Performance Dual‐Mode Thermoelectric Devices

Advanced Science, EarlyView.
I‐doping stabilizes the cubic phase of GeTe and generates “electron‐transparent, phonon‐blocking” grain boundary networks while inducing valence‐band convergence. This synergistic structural‐electronic design enables effective electron‐phonon decoupling, achieving an exceptional average zTave of ∼1.62, a peak zT of ∼2.2, and enhanced mechanical ...
Xiaobo Tan, Xuri Rao, Huangshui Ma, Jiaxing Luo, Fan Feng, Zijian Lin, Ruiheng Li, Maoji Tian, Siqi Huo, Min Hong, Ran Ang   +10 more
wiley   +1 more source

Sustainable Sound Absorption: A Critical Review of Material Innovation and Geometry-Driven Design. [PDF]

Polymers (Basel)
Tayari F, Silva R, Godinho B, Pinto P, Cardoso I, Brilhante T, Freitas V, Ribeiro R, Ferreira A, Gama N.   +9 more
europepmc   +1 more source

Cicada Wing‐Inspired Skeleton‐GO Networks in Melamine Foams for Multifunctional High‐Performance Composites

Advanced Science, EarlyView.
Inspired by the intricate microstructure of cicada wings, researchers developed a novel in situ skeleton‐graphene membrane architecture within lightweight foams. This bioinspired design dramatically enhances multifunctional performance: vibration attenuation time decreases by ∼83.3%, damping capacity increases by ∼179.3%, and compressive modulus rises ...
Jigang Feng, Anhao Li, Babak Safaei, Yun Kong, Yizhen Miao, Zhaoye Qin, Fulei Chu   +6 more
wiley   +1 more source

A Comparative Sound Intensity Method for Measuring the Increase in Sound Insulation of Small Acoustic Metamaterial Samples. [PDF]

Sensors (Basel)
Agata P, Katarzyna BM, Bartłomiej Z, Mirosława LM, Dorota M, Katarzyna D.   +5 more
europepmc   +1 more source