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Lensing in the Ultrasonic Domain using Negative Refraction Induced by Material Contrast
The focusing of ultrasound using topographic lenses, typically made of plates with step changes that cause an interaction between forward- and backward-propagating guided waves, has been widely studied in recent years. However, such ‘step-change’ lenses require precise machining and moreover, the th...
| Autores principales: | , |
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| Formato: | Online Artículo Texto |
| Lenguaje: | English |
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Nature Publishing Group UK
2019
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| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6482190/ https://www.ncbi.nlm.nih.gov/pubmed/31019227 http://dx.doi.org/10.1038/s41598-019-42655-3 |