Table S1.
Characteristics of reconstructed photonic crystal domains
| Crystallite | Chitin fraction | Chirality | a1/nm [100] | a2/nm [010] | a3/nm [001] |
| 1 | 0.34 ± 0.08 | LH srs | 332 | 292 | 261 |
| 2 | 0.31 ± 0.05 | LH srs | 349 | 289 | 226 |
| 3 | 0.32 ± 0.06 | LH srs | 379 | 247 | 242 |
| 4 | 0.35 ± 0.05 | RH srs | 340 | 285 | 233 |
| 5 | 0.28 ± 0.03 | LH srs | 377 | 248 | 239 |
| 6 | 0.29 ± 0.03 | RH srs | 332 | 266 | 245 |
| 7 | 0.30 ± 0.03 | LH srs | 320 | 296 | 234 |
| 8 | 0.29 ± 0.03 | LH srs | 352 | 255 | 292 |
| 9 | 0.29 ± 0.03 | LH srs | 387 | 271 | 231 |
| 10 | 0.30 ± 0.05 | LH srs | 340 | 330 | 260 |
| 11 | 0.36 ± 0.05 | LH srs | 320 | 282 | 250 |
| 12 | 0.30 ± 0.05 | LH srs | 365 | 230 | 247 |
Chitin volume fraction, chirality information, and edge lengths of the average unit cell of each respective reconstructed photonic crystal domain.