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Giuseppe Ciaburro, Gino Iannace, Laura Ricciotti, Antonio Apicella, Valeria Perrotta and Raffaella Aversa
In this paper, a metamaterial design based on lightweight geopolymeric elements was reported for applications in acoustic insulation.
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Yumei Zhang, Jie Zhang, Ye Li, Dan Yao, Yue Zhao, Yi Ai, Weijun Pan and Jiang Li
Acoustic metamaterials (AMs) composed of periodic artificial structures have extraordinary sound wave manipulation capabilities compared with traditional acoustic materials, and they have attracted widespread research attention. The sound insulation perf...
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Dianwei Gao, Chunwei Zhang and Jianhua Zhang
The energy absorption capacity of materials with negative Poisson?s ratio (NPR) is attracting interest from both industry and academia due to the excellent impact resistance of the local shrinkage of materials. However, understanding the compressive beha...
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Xu Gao, Jiyuan Wei, Jiajing Huo, Zhishuai Wan and Ying Li
An improved re-entrant negative Poisson?s ratio metamaterial based on a combination of 3D printing and machining is proposed. The improved metamaterial exhibits a superior load-carrying and vibration isolation capacity compared to its traditional counter...
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Ameneh Mikaeeli, Alireza Keshavarz, Ali Baseri and Michal Pawlak
The transfer matrix approach is used to study the optical characteristics of thermal radiation in a one-dimensional photonic crystal (1DPC) with metamaterial. In this method, every layer within the multilayer structure is associated with its specific tra...
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Lixia Li, Haiteng Hu and Xiaolan Wu
In this paper, we propose an acoustic black hole radial elastic metamaterial (AREM). Through the study of its dispersion relations, it is found that, compared with the conventional elastic metamaterial, the AREM gathers energy at the tip of the black hol...
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Xiao Yuan Chen, Royale S. Underhill and Denis Rodrigue
The objective of this study was to present a simple and environmentally friendly process combining low pressure (vacuum) and mechanical compression to convert low-density polyethylene (LDPE) foams into low-density foams (76?125 kg/m3) with negative tensi...
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Vladimir M. Fomin and Oliver Marquardt
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Bin Yu, Zhao Xu, Ruinan Mu, Anping Wang and Haifeng Zhao
Thermal expansion is inevitable for space structures under the alternating temperature of outer space around the earth. This may lead to the thermal stress and deformation due to the mismatch of the coefficient of thermal expansion. Near-zero thermal exp...
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Mikhail V. Golub, Ilya A. Moroz, Yanzheng Wang, Artur D. Khanazaryan, Kirill K. Kanishchev, Evgenia A. Okoneshnikova, Alisa N. Shpak, Semyon A. Mareev and Chuanzeng Zhang
A novel kind of acoustic metamaterials (AMMs) with unit cells composed of two layers made of dissimilar materials with a crack-like void situated at the interface between bars is considered. Recently, the authors showed numerically that this novel kind o...
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