Scattering resonances for a three-dimensional subwavelength hole

Scattering resonances for a three-dimensional subwavelength hole
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三维亚波长孔的散射共振

DOI:
10.1007/s42985-021-00111-w
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发表时间:
2021
期刊:
SN Partial Differential Equations and Applications
影响因子:
--
通讯作者:
Lin, Junshan.
Lin, Junshan.
中科院分区:
--
文献类型:
--
作者:
Fatima, Maryam;Lin, Junshan.

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本文的目的是研究声硬板中宽层亚波长孔的散射共振和共振频率下的场放大。我们应用积分方程方法和渐近分析导出了散射共振的渐近展开式,并定量分析了相应的场放大。结果表明,复值散射共振达到虚部阶。在谐振频率范围内,孔内和远场的场增强是有序的,比相同宽度的二维亚波长孔的场增强顺序要强得多。
This work aims to investigate scattering resonances and the field amplification at resonant frequencies for a subwavelength hole of widthembedded in a sound hard slab. We apply the integral equation approach and asymptotic analysis to derive the asymptotic expansions of scattering resonances and quantitatively analyze the corresponding field amplifications. It is shown that the complex-valued scattering resonances attain imaginary parts of order. The field enhancement inside the hole and in the far field is of orderat the resonant frequencies, which is much stronger the enhancement order in the two-dimensional subwavelengt hole of the same width.
DOI: 10.1090/surv/153/09
发表时间: 2009
期刊: Mathematical and Computational Methods in Photonics and Phononics
影响因子: --
作者:
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DOI: 10.1038/35570
发表时间: 1998-02-12
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影响因子: 64.8
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影响因子: --
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发表时间: 2021-07
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影响因子: --
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DOI: 10.1137/0516078
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