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超材料 2

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超宽带；天线；超材料 1

超材料；等效媒质理论；超表面；表面等离子激元；数字编码；可编程；信息 1

颠覆性技术 1

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Plasmonic light trapping for enhanced light absorption in film-coupled ultrathin metamaterial thermophotovoltaic

Qing NI, Hassan ALSHEHRI, Yue YANG, Hong YE, Liping WANG

《能源前沿（英文）》 2018年第12卷第1期页码 185-194 doi: 10.1007/s11708-018-0522-x

摘要： Ultrathin cells have gained increasing attention due to their potential for reduced weight, reduced cost and increased flexibility. However, the light absorption in ultrathin cells is usually very weak compared to the corresponding bulk cells. To achieve enhanced photon absorption in ultrathin thermophotovoltaic (TPV) cells, this work proposed a film-coupled metamaterial structure made of nanometer-thick gallium antimonide (GaSb) layer sandwiched by a top one-dimensional (1D) metallic grating and a bottom metal film. The spectral normal absorptance of the proposed structure was calculated using the rigorous coupled-wave algorithm (RCWA) and the absorption enhancement was elucidated to be attributed to the excitations of magnetic polariton (MP), surface plasmon polariton (SPP), and Fabry-Perot (FP) resonance. The mechanisms of MP, SPP, and FP were further confirmed by an inductor-capacitor circuit model, dispersion relation, and phase shift, respectively. Effects of grating period, width, spacer thickness, as well as incidence angle were discussed. Moreover, short-circuit current density, open-circuit voltage, output electric power, and conversion efficiency were evaluated for the ultrathin GaSb TPV cell with a film-coupled metamaterial structure. This work will facilitate the development of next-generation low-cost ultrathin infrared TPV cells.

关键词： metamaterial thermophotovoltaic plasmonics light trapping selective absorption

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一种改进的用于加载微型航天器小型化超宽带多共振贴片天线的新型H形裂环谐振器超材料 Article

Parul DAWAR, N. S. RAGHAVA, Asok DE

《信息与电子工程前沿（英文）》 2017年第18卷第11期页码 1883-1891 doi: 10.1631/FITEE.1601193

摘要：本文设计并分析了一种改进H形裂环谐振器（split ring resonator, SRR）的新型超材料。它具有负磁导率和负介电常数特性，且在X，Ku和Ka频带内具有多频共振特性。本文就超材料方向和位置的变化对不同配置下的贴片天线进行了分析。结果表明，新型超材料天线实现了性能优化，表现为9 dB的可观增益，77 GHz的带宽，100%的辐射效率，以及有源区65%的面积缩减。二阶分形超材料天线尺寸降至1/21，从而实现了高度小型化。该研究为急需小尺寸尖波束的通信领域提供了一种解决方案。

关键词：超宽带；天线；超材料

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Thermal radiative properties of metamaterials and other nanostructured materials: A review

Ceji FU, Zhuomin M. ZHANG

《能源前沿（英文）》 2009年第3卷第1期页码 11-26 doi: 10.1007/s11708-009-0009-x

摘要： The ability to manufacture, control, and manipulate structures at extremely small scales is the hallmark of modern technologies, including microelectronics, MEMS/NEMS, and nano-biotechnology. Along with the advancement of microfabrication technology, more and more investigations have been performed in recent years to understand the influence of microstructures on radiative properties. The key to the enhancement of performance is through the modification of the reflection and transmission properties of electromagnetic waves and thermal emission spectra using one-, two-, or three-dimensional micro/nanostructures. This review focuses on recent developments in metamaterials–manmade materials with exotic optical properties, and other nanostructured materials, such as gratings and photonic crystals, for application in radiative energy transfer and energy conversion systems.

关键词： metamaterial nanostructured material thermal radiative property radiative energy transfer

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Analytical solution for SH wave propagating through a graded plate of metamaterial

Jinfeng ZHAO, Yongdong PAN, Zheng ZHONG

《机械工程前沿（英文）》 2011年第6卷第3期页码 301-307 doi: 10.1007/s11465-011-0238-7

摘要：

A physical model for the shear horizontal (SH) wave propagating from left-handed material (LHM) through a graded or transition layer to right-handed material (RHM) has been proposed in this paper. After the comparison of the basic wave equations of the electromagnetic, longitudinal, and SH waves, it is found that they take similar differential form. The analytical solutions have been found for power law, hyperbolic, and polynomial profiles. Numerical waveforms of the amplitude and phase of the displacement are obtained for the corresponding profiles. It is found that the waveforms are symmetric for the power law and hyperbolic profiles, and that the waveform for the polynomial profile is shifted and non-symmetric. The shift along with the anti-symmetric profile may provide a way to monitor the wave behavior of the metamaterials.

关键词： left-handed material (LHM) metamaterial shear horizontal (SH) wave

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超材料技术及其应用展望

周济,李龙土

《中国工程科学》 2018年第20卷第6期页码 69-74 doi: 10.15302/J-SSCAE-2018.06.011

摘要：

超材料是一类利用人工结构作为功能单元构筑的新型材料，可实现自然材料无法获得的新性能，得到了世界各国的高度重视，被美国国防部列为六大颠覆性技术之一。本文从工程应用出发对超材料技术的形成和发展做了简单评述，总结了过去一些年超材料在几个典型领域，如隐身、电子元器件及机械减震系统中取得的若干重要突破，预测了可能导致颠覆性技术的几个方向，如超材料透镜技术、超材料全光调控技术，以及超材料与常规材料的融合等，并对超材料技术未来发展的难点和战略思路提出了建议。

关键词：超材料人工结构颠覆性技术材料设计

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一种作为主动控制宽带吸波器的热可调超材料 Article

邢校菖, 曹阳, 田小永, 吴玲玲

《工程（英文）》 2023年第20卷第1期页码 143-152 doi: 10.1016/j.eng.2022.04.028

摘要：

近年来，超材料因其操纵电磁波的强大能力而受到越来越多的关注。然而，大多数先前报道的超材料无法动态调控超宽波段电磁波。在本文中，我们提出了一种使用具有不同相变温度的石蜡基复合材料（PDCs）来实现热可调谐宽带吸波的超材料结构体（T-TBM）。通过在不同相变温度下控制PD-Cs 的固液态，实现了从低频到高频的T-TBM反射损耗峰值的动态调控。T-TBM可以改变吸收峰值带宽（反射损耗值小于−30 dB），并且通过调整T-TBM 的温度依然满足宽带吸波（反射损耗值小于−10 dB）。实验结果表明，T-TBM中PD-Cs的相变恒温效应为在不同热条件下主动控制电磁波吸收响应提供了时间窗口。该器件在电磁吸收、智能超材料、多功能结构器件等领域具有广阔的应用前景。

关键词：超材料主动控制热可调宽带吸波

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电磁超材料：从新物理现象到新信息系统 Review Articles

Rui-yuan WU, Tie-jun CUI

《信息与电子工程前沿（英文）》 2020年第21卷第1期页码 4-26 doi: 10.1631/FITEE.1900465

摘要：由于对电磁波强大的调控能力，超材料和超表面吸引了越来越多研究者的关注。本文回顾总结近年来电磁超材料的发展，从最初的新物理现象到现在的新信息系统。首先展示等效媒质超材料的定义和应用，包括隐身衣和超材料透镜等。随后介绍二维超材料，即电磁超表面，对空间波和表面波的调控功能，同时概述表面等离子激元及其在微波段的应用。在此基础上，着重介绍新颖的数字编码超材料和可编程超材料，统称信息超材料。通过将理论层的信息科学与物理层的超材料设计联系在一起，实现一系列新型器件和系统，同时实现信息和电磁波调控。最后，对超材料的未来发展做出展望。

关键词：超材料；等效媒质理论；超表面；表面等离子激元；数字编码；可编程；信息

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