Results 61 to 70 of about 13,645 (194)

Recent progress in acoustic metamaterials and active piezoelectric acoustic metamaterials - A review

Applied Materials Today, 2022
Abstract Acoustic metamaterials, structured to produce anomalous reflection and refraction indices that are not found in conventional materials, are gaining prominence in engineering applications. These artificial structures have enabled novel functionalities, such as negative effective properties, extraordinary wave manipulation, enhanced sound ...
Ji, G, Huber, J
openaire   +2 more sources

A comprehensive review of acoustic metamaterials: Applications and challenges for lightweight noise control in large-scale transportation

Materials & Design
Aiming to address the vibration and noise reduction requirements of large-scale transportation, the latest research advancements in acoustic metamaterials are classified and reviewed based on practical engineering challenges in this paper.
Dan Yao, Jie Zhang, Jingyu Lei, Zixuan Zhao, Yumei Zhang, Yue Zhao, Jie Pang, Jiang Li   +7 more
doaj   +1 more source

Tunable acoustic passive phased array based on double-opening resonant rings

AIP Advances, 2023
The special structural design of acoustic metamaterials further extends acoustic properties of the materials. We design a tunable acoustic passive phased array based on double-opening resonant rings, which modulates the acoustic waves only by the ...
Shulei Gong, Jinyu Zhao, Mengchun Yang, Yuan Liu, Haixiao Zhang, Yongchang Li   +5 more
doaj   +1 more source

Smart Closed‐Loop Systems in Personalized Healthcare: Advances and Outlook

Advanced Materials Technologies, EarlyView.
A smart closed‐loop e‐textile integrates multimodal sensing, onboard processing, wireless communication, and wearable power to enable real‐time physiological/biochemical monitoring and feedback‐controlled therapy. ABSTRACT Smart textiles represent a revolutionary frontier in healthcare, seamlessly blending fabric and advanced technologies to create ...
Safoora Khosravi, Sang Won Lee, Mohammad Abrar Uddin, Sina Hassanpoor, Neha Suvindran, Katherine Le, Harun Arkaz, Harishkumar Narayana, Saeid Soltanian, Danial Khorsandi, Negar Hosseinzadeh Kouchehbaghi, Taeil Kim, Yangzhi Zhu   +12 more
wiley   +1 more source

3D Printing of Soft Robotic Systems: Advances in Fabrication Strategies and Future Trends

Advanced Robotics Research, EarlyView.
Collectively, this review systematically examines 3D‐printed soft robotics, encompassing material selections, function integration, and manufacturing methodologies. Meanwhile, fabrication strategies are analyzed in order of increasing complexity, highlighting persistent challenges with proposed solutions.
Changjiang Liu, Bin Cui, Xumin Huang, Xiaoyu (Rayne) Zheng, T. Thang Vo‐Doan, Ruirui Qiao   +5 more
wiley   +1 more source

Tunable acoustic double negativity metamaterial [PDF]

Scientific Reports, 2012
Man-made composite materials called "metamaterials" allow for the creation of unusual wave propagation behavior. Acoustic and elastic metamaterials in particular, can pave the way for the full control of sound in realizing cloaks of invisibility, perfect lenses and much more.
Liang, Zixian, Willatzen, Morten, Li, Jensen Tsan Hang, Christensen, Johan   +3 more
openaire   +5 more sources

Two-Dimensional Composite Acoustic Metamaterials of Rectangular Unit Cell from Pentamode to Band Gap

Crystals, 2021
Pentamode metamaterials have been receiving an increasing amount of interest due to their water-like properties. In this paper, a two-dimensional composite pentamode metamaterial of rectangular unit cell is proposed. The unit cells can be classified into
Qi Li, Ke Wu, Mingquan Zhang
doaj   +1 more source

Inherently Disordered Auxetic Metamaterials

Advanced Science, EarlyView.
Inherently disordered auxetic metamaterials based on random chiral Delaunay triangulations are designed and investigated using numerical simulations and experimental tests. These disordered frameworks exhibit orthotropic behavior and a large negative Poisson's ratio (ca.
Matteo Montanari, Reza Moghimimonfared, Andrea Spaggiari, Luke Mizzi   +3 more
wiley   +1 more source

Acoustic transmission loss in Hilbert fractal metamaterials

Scientific Reports, 2023
Acoustic metamaterials are increasingly being considered as a viable technology for sound insulation. Fractal patterns constitute a potentially groundbreaking architecture for acoustic metamaterials.
Gianni Comandini, Morvan Ouisse, Valeska P. Ting, Fabrizio Scarpa   +3 more
doaj   +1 more source

Three-dimensional acoustic double-zero-index medium with a Dirac-like point

, 2019
We report a design and experimental realization of a three-dimensional (3D) acoustic double-zero-index medium (DZIM), whose effective mass density and compressibility are nearly zero simultaneously.
Chen, Ze-Guo, Lai, Yun, Luo, Jie, Ma, Guancong, Shi, Jinjie, Wu, Ying, Xu, Changqing   +6 more
core   +1 more source