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Bidirectional acoustic negative refraction based on a pair of metasurfaces with both local and global PT-symmetries
Negative refraction plays an important role in acoustic wave manipulation and imaging. However, conventional systems based on acoustic metamaterials suffer from the limits induced by loss-related and resolution issues. In this work, a parity-time (PT)-symmetric system is introduced to realize loss-f...
| Autores principales: | , , , , |
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| Formato: | Online Artículo Texto |
| Lenguaje: | English |
| Publicado: |
Nature Publishing Group UK
2020
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| Materias: | |
| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7330048/ https://www.ncbi.nlm.nih.gov/pubmed/32612196 http://dx.doi.org/10.1038/s41598-020-67793-x |