Table 1. Wave properties in the wave propagation direction (y direction) of the two media.
| Wave properties | 1 mm-thick aluminum plate | Metamaterial lens |
|---|---|---|
| Group velocity (m/s) | 5407 | 792 |
| Phase velocity (m/s) | 5438 | 8669 |
| Wavelength (mm) | 153.6 | 244.3 |
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