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arXiv 1104.2945physics.optics
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中红外超材料的强吸收和选择性热辐射

Strong absorption and selective thermal emission from a mid-infrared metamaterial

J. A. Mason, S. Smith, D. Wasserman

摘要:

我们展示了在中红外波长范围内具有共振的薄膜超材料。我们的结构进行了数值模拟和实验反射和角分辨热发射光谱的特点。我们证明了强大的和可控的吸收共振在中红外波长范围。此外,从这些样品的偏振热发射被证明是高度选择性的,并在很大程度上独立于从正常到45度的发射角。实验结果进行了比较,数值模型具有良好的协议。这种结构有望用于大面积、低成本的超材料涂层,以控制灰体或黑体热特征,以及可能的中红外传感应用。

英文摘要:

We demonstrate thin-film metamaterials with resonances in the mid-infrared wavelength range. Our structures are numerically modeled and experimentally characterized by reflection and angularly-resolved thermal emission spectroscopy. We demonstrate strong and controllable absorption resonances across the mid-infrared wavelength range. In addition, the polarized thermal emission from these samples is shown to be highly selective and largely independent of emission angles from normal to 45 degrees. Experimental results are compared to numerical models with excellent agreement. Such structures hold promise for large-area, low-cost metamaterial coatings for control of gray- or black-body thermal signatures, as well as for possible mid-IR sensing applications.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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