Deep subwavelength ultrasonic imaging using optimized holey structured metamaterials


This paper reports the experimental demonstration of deep subwavelength ultrasonic imaging of defects in metallic samples with a feature size of λ/25 using holey-structured metamaterial lenses. Optimal dimensions of the metamaterial’s geometric parameters are determined using numerical simulation and the physics of wave propagation through holey lenses. The… (More)
DOI: 10.1038/s41598-017-08036-4


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