Table 1 Amplitude of Transmission Ratio (TR) at the defects and away from the defects at various frequencies.
From: Deep subwavelength ultrasonic imaging using optimized holey structured metamaterials
Low frequency components | ||
|---|---|---|
Frequency (kHz) | Amplitude At defect | Amplitude Away from defect |
55 | 0.531 | 0.089 |
76 | 0.913 | 0.530 |
287 | 0.724 | 0.710 |
575 | 0.124 | 0.106 |
High frequency components | ||
1413 | 0.041 | 0.144 |
1602 | 0.061 | 0.082 |
1799 | 0.146 | 0.222 |
2130 | 0.378 | 0.421 |
3098 | 0.570 | 0.922 |
3165 | 0.173 | 0.349 |
3396 | 0.116 | 0.165 |
3635 | 0.156 | 0.177 |
3974 | 0.094 | 0.153 |
