Results 81 to 90 of about 13,339 (215)

Highly-anisotropic elements for acoustic pentamode applications

, 2012
Pentamode metamaterials are a class of acoustic metafluids that are characterized by a divergence free modified stress tensor. Such materials have an unconventional anisotropic stiffness and isotropic mass density, which allow themselves to mimic other ...
Calvo, David C., Layman, Christopher N., Martin, Theodore P., Naify, Christina J., Orris, Gregory J.   +4 more
core   +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

Topology optimization of acoustic metamaterials with negative mass density using a level set-based method

Mechanical Engineering Journal, 2014
Much effort has been made to experimentally fabricate acoustic metamaterials that display novel properties, such as single or double negativity, negative refractive index.
Lirong LU, Masaki OTOMORI, Takayuki YAMADA, Takashi YAMAMOTO, Kazuhiro IZUI, Shinji NISHIWAKI   +5 more
doaj   +1 more source

Negative group velocity and three-wave mixing in dielectric crystals

, 2011
Extraordinary features of optical parametric amplification of Stokes electromagnetic waves are investigated, which originate from three-wave mixing of two ordinary electromagnetic and one backward phonon wave with negative group velocity.
Myslivets, Sergey A., Popov, Alexander K., Shalaev, Mikhail I., Slabko, Vitaly V.   +3 more
core   +1 more source

Acoustic jet based on acoustic metamaterial

, 2021
12 pages, 4 ...
Zhao, Liuxian, Horiuchi, Timothy, Yu, Miao   +2 more
openaire   +2 more sources

3D‐MOF‐Lattice Inspired Programmable Metamaterials Based on Reconfigurable Polyhedral Origami

Advanced Science, EarlyView.
A novel metamaterial design strategy: inspired by MOFs crystal networks, creating reconfigurable modular polyhedral units to overcome the limitations of traditional materials. These modules exhibit adjustable stiffness, bistability, and Poisson's ratio that can be adjusted from negative to positive values.
Xi Kang, Yangqin Zhang, Hongshuang Fan, Ziyan Xu, Yue Dong, Bing Li   +5 more
wiley   +1 more source

Two-Dimensional Pentamode Metamaterials: Properties, Manufacturing, and Applications

Crystals
Metamaterials are artificial materials with properties depending mainly on their designed structures instead of their materials. Pentamode metamaterials are one type of metamaterial.
Chuang Zhou, Qi Li, Xiaomei Sun, Zifei Xiao, Haichao Yuan   +4 more
doaj   +1 more source

Fine manipulation of sound via lossy metamaterials with independent and arbitrary reflection amplitude and phase

Nature Communications, 2018
The formation of true holograms requires control of both amplitude and phase; however, acoustic metamaterials are generally limited to phase control only. Here, Zhu et al.
Yifan Zhu, Jie Hu, Xudong Fan, Jing Yang, Bin Liang, Xuefeng Zhu, Jianchun Cheng   +6 more
doaj   +1 more source

Stimulated Brillouin scattering in metamaterials

, 2016
We compute the SBS gain for a metamaterial comprising a cubic lattice of dielectric spheres suspended in a background dielectric material. Theoretical methods are presented to calculate the optical, acoustic, and opto-acoustic parameters that describe ...
de Sterke, C. Martijn, Kuhlmey, B. T., Lapine, M., Poulton, C. G., Smith, M. J. A., Wolff, C.   +5 more
core   +1 more source

3D‐Printed Aerogel Metamaterials with Multiple Heterogeneous Interfaces Enables Integrated Control of Microwave Field, Acoustic Field, and Thermal Field

Advanced Science, EarlyView.
The Direct‐Ink‐Writing (DIW) 3D‐printed aramid nanofibers (ANF)/carbon nanotubes (CNT)/liquid metal (LM) aerogel metamaterial demonstrates an effective and lightweight strategy to achieve polarization insensitive & ultra‐wideband microwave absorption from 2.65‐18 GHz, broadband noise reduction effect in the 2800‐6400 Hz and thermal suppression ...
Yijie Liu, Kokila Khanal, Weimeng Chu, Sreekanth Ginnaram, Yijing Zhao, Chunlin Jia, Udeshwari Jamwal, Jiaqi Tao, Lvtong Duan, Wentao Yan, Yong Yang   +10 more
wiley   +1 more source