Table 1.
The thickness and STD of the insulating layers in different samples
| Thickness (μm) | STD (μm) | |
|---|---|---|
| Card 1 | 21.6 | 1.7 |
| Card 2 | 31.2 | 2.9 |
| Card 3 | 36.2 | 2.5 |
| Card 4 | 31.1 | 2.9 |
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