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Dmitry Gritsenko and Roberto Paoli
Acoustic metamaterials have proven to be a versatile tool for the precise control and manipulation of sound waves. One of the promising designs of acoustic metamaterials employ the arrays of bubbles and find applications for soundproofing, blast mitigati...
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Daniel Deery, Lara Flanagan, Gordon O?Brien, Henry J. Rice and John Kennedy
Significant potential for acoustic metamaterials to provide a breakthrough in sound attenuation has been unlocked in recent times due to advancements in additive manufacturing techniques. These materials allow the targeting of specific frequencies for so...
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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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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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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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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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Ivan S. Maksymov
Oscillations of gas bubbles in liquids irradiated with acoustic pressure waves may result in an intriguing physical phenomenon called sonoluminescence, where a collapsing bubble emits the in a broad optical spectral range. However, the intensity of the s...
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Ubaid Ur Rahman Qureshi, Muhammad Ismail Khan and Bin Hu
In this study, an ultra-wideband actively tunable terahertz absorber composed of four identical arc-shaped structures made of phase transition material vanadium dioxide (VO2) is presented. A metal ground plane is placed at the bottom and an insulating sp...
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Hongyu Ren, Qianyi Shangguan, Zijun Song, Yong Zhao, Zao Yi, Guolu Ma, Jianguo Zhang, Hua Yang, Shifa Wang and Pinghui Wu
This paper presents a graphene metamaterial absorber based on impedance matching. A finite difference in time domain (FDTD) method is used to achieve a theoretically perfect absorption in the mid-infrared band. A basis is created for the multiband stable...
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Reza Hedayati and Mahdi Bodaghi
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Nikolay Kanev
Metasurfaces formed by monopole and dipole resonators are studied theoretically. The monopole resonators are Helmholtz resonators or membranes vibrating on the first eigenfrequency; the dipole ones are spheres on springs or membranes vibrating on the sec...
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Reza Hedayati, Naeim Ghavidelnia, Mojtaba Sadighi and Mahdi Bodaghi
Permeable porous implants must satisfy several physical and biological requirements in order to be promising materials for orthopaedic application: they should have the proper levels of stiffness, permeability, and fatigue resistance approximately matchi...
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Wei-Fan Chiang, Shih-Xuan Lin, Yong-Xuan Lee, Yu-Han Shih, Jih-Hsin Liu, Harry-Miyosi Silalahi, Chia-Rong Lee and Chia-Yi Huang
A liquid crystal (LC) layer that is too thick exhibits a small terahertz birefringence due to the limited long-range force of the alignment layers that exert on it. An LC layer that is too thin has a small terahertz birefringence due to its invisibility ...
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Giorgio Palma, Lorenzo Burghignoli, Francesco Centracchio and Umberto Iemma
Modern turbofans with high bypass ratios, low blade passage frequencies and short nacelles require continuous development of acoustic linings to achieve the noise reductions expected by the international aviation authorities. Metamaterials and metafluids...
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Jingying Liu, Zhi Gong, Shiyou Yang, Hui Sun and Jing Zhou
Metamaterials (MTMs) with extraordinary electromagnetic properties are recently applied to wireless power transfer (WPT) systems to improve power transmission efficiency. Although theoretical progress has been made on MTMs in low frequency near field, in...
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Tatjana Gric and Edik Rafailov
The dependence of the Purcell factor on nanowire metamaterial geometry was analyzed. Calculations made about the Purcell factor in realistic composites, operating at an optical spectral range, are provided. We applied a metamaterial, aiming to mitigate t...
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Albert Sabban
The development of compact passive and active wearable circular patch metamaterials antennas for communication, Internet of Things (IoT) and biomedical systems is presented in this paper. Development of compact efficient low-cost wearable antennas are on...
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