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Experimental observation of far-field and near-field focusing in a sonic crystal flat lens in air

机译:空气中声晶平板透镜的远场和近场聚焦实验观察

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摘要

This experimental study demonstrates intensity maps of far-field focusing using a two-dimensional triangular lattice sonic crystal and intensity maps of near-field focusing using a two-dimensional square lattice sonic crystal for various scatter materials. Besides, the paper presents an experimental method to estimate the effective refraction index of far-field flat lenses. The author introduces the experimental setup developed for the research and discusses the results obtained.
机译:这项实验研究表明,对于各种散射材料,使用二维三角晶格声波晶体的远场聚焦强度图和使用二维正方形晶格声波晶体的近场聚焦强度图。此外,本文提出了一种估算远场平面透镜有效折射率的实验方法。作者介绍了为该研究开发的实验装置,并讨论了获得的结果。

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