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Subwavelength Tunneling of Electromagnetic Waves in Microwave

Enhance transmission of waves through an opaque object via sandwiching it between metallic plates with slits or plastic plates with metallic fractals. The ABA or CBC configuration shows transmission peaks at specific frequencies, suggesting wave penetration through the opaque metallic mesh. Experimental observations and simulations reveal transmission enhancements triggered by local resonances in the sandwiching layers.

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Subwavelength Tunneling of Electromagnetic Waves in Microwave

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  1. Subwavelength Tunneling of Electromagnetic Wave Microwave A(C) B A(C) The enhanced transmission of electromagnetic waves through an opaque object (subwavelength metallic mesh) is achieved by sandwiching it between two metallic plates with periodically arrangedH slits (ABA for short), or between two plastic plates with periodically arranged metallic fractals (CBC for short). Such ABA or CBC configuration exhibits transmission peaks, indicating wave penetration through the opaque metallic mesh at those frequencies. The experimental observations and theoretical simulations demonstrate the transmission enhancements to be induced by local resonances in the sandwiching layers. References: [1] L. Zhou, W. Wen, C. T. Chan, and P. Sheng, Phys. Rev. Lett. 94, 243905 (2005). [2] W. Wen, L. Zhou, J. Li, W. Ge, C. T. Chan, and P. Sheng, Phys. Rev. Lett. 89, 223901 (2002).

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