Results 161 to 170 of about 303,366 (347)

Sound Absorption Performance and Mechanical Properties of the 3D-Printed Bio-Degradable Panels. [PDF]

Polymers (Basel), 2023
Zaharia SM, Pop MA, Cosnita M, Croitoru C, Matei S, Spîrchez C.   +5 more
europepmc   +1 more source

The Impedance and the Absorption of Acoustical Materials to Sound at Random Incidence [PDF]

, 1953
Howard C. Hardy
openalex   +1 more source

A Generative AI‐Assisted Piezo‐MEMS Ultrasound Device for Plant Dehydration Monitoring

Advanced Science, EarlyView.
This study introduces a complementary metal–oxide–semiconductor (CMOS)‐compatible wearable piezoelectric micromachined ultrasound transducers (PMUTs) that sandwiches the leaf (PMUT–Leaf–PMUT, PLP) and employs generative artificial intelligence for real‐time analysis.
Kaustav Roy, Darren Sim, Luwei Wang, Zixuan Zhang, Xinge Guo, Yao Zhu, Sanjay Swarup, Chengkuo Lee   +7 more
wiley   +1 more source

Sound Absorption of the Absorber Composed of a Shunt Loudspeaker and Porous Materials in Tandem. [PDF]

Polymers (Basel), 2023
Li X, Cao Z, Xu L, Liu B.
europepmc   +1 more source

Acoustic Metasurface for Space‐time Reflection Manipulation

Advanced Science, EarlyView.
This article introduces a novel space‐time acoustic metasurface (STAM) to overcome the limitations of bulky structures in sound modulation. Using a programmable piezoelectric array, the STAM precisely controls waterborne acoustic waves through spatiotemporal phase modulation.
Yunhan Yang, Han Jia, Jiuyang Lu, Yuzhen Yang, Tuo Liu, Jun Yang, Zhengyou Liu   +6 more
wiley   +1 more source

An automatic reverberation meter for the measurement of sound absorption

, 1932
W. F. Snyder
openalex   +1 more source

Nature‐Inspired Nanostructures from Multiple‐Species Biomembranes: Rational Engineering and Therapeutic Applications in Tumor‐Targeted Nanomedicine

Advanced Science, EarlyView.
Naturally derived biomembrane nanostructures by mimicking evolutionarily optimized biological architectures could effectively suppress tumor growth and have emerged as a compelling strategy in translational biomedicine. This review provides a systematic overview of rational design and underlying antitumor therapeutic mechanisms of mammalian cells ...
Xiaodan Wei, Chi Wang, Xiangyan Chen, Yuanyuan Zhu, Mei Yang, Ningxi Li, Honglin Huang, Guangjian Zhang, Mingzhen Zhang, Yiyao Liu, Rui Gao   +10 more
wiley   +1 more source

Switchable Bidirectional Sound Absorption Via Exceptional Point Modulation in Acoustic Metastructures with Interleaved Resonator Coupling

Advanced Science, EarlyView.
A switchable bidirectional acoustic metastructure is proposed, enabling broadband and frequency‐selective absorption via interleaved resonator coupling and exceptional point modulation. It outperforms traditional unidirectional designs, offering compact, efficient sound control from both directions and establishing a generalized framework for extending
Zichao Guo, Liangfen Du, Zirui Yang, Kexin Zeng, Ziping Lei, Zhonggang Wang, Zhendong Li, Zheng Fan   +7 more
wiley   +1 more source

Direct Observation of Suppressed Optical–Acoustic Phonon Energy Coupling in Supported SWCNT at Cryogenic Temperatures

Advanced Science, EarlyView.
This study quantifies the temperature‐dependent optical–acoustic phonon coupling factor (GOA) in supported single‐walled carbon nanotubes, revealing significant suppression at low temperatures. At high temperatures, GOA increases monotonically and is attributed to intensified anharmonic phonon interactions. This research offers key insights into phonon
Ibrahim Al Keyyam, Yu Hua, Baini Li, Tianyu Wang, Cheng Deng, Xinwei Wang   +5 more
wiley   +1 more source

Breaking Stiffness‐Tunability Trade‐offs in Metamaterials: a Minimal Surface Guided Hybrid Lattice Strategy

Advanced Science, EarlyView.
This work breaks the persistent stiffness‐tunability compromise in metamaterials through a spatial Boolean fusion strategy integrating Primitive/IWP TPMS shells with cubic plate lattices. The framework enables highly tunable architectures with optimized robustness, fabricated via PolyJet printing.
Min Zhang, Kang Gao, Jinlong Liu, Zhiqiang Zou, Jie Yang, Ma Qian, Wei Zhai, Zhangming Wu   +7 more
wiley   +1 more source