Table 1. Scattering length densities and Q c values against air for the substrates used in Fig. 6 ▸ .
| Substrate | SLD (×10−6 Å−2) | Q c (Å−1) |
|---|---|---|
| Silicon | 2.07 | 0.0102 |
| Quartz | 4.23 | 0.0146 |
| Sapphire | 5.67 | 0.0169 |
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