# this file is part of refractiveindex.info database
# refractiveindex.info database is in the public domain
# copyright and related rights waived via CC0 1.0

REFERENCES: |
    G. Perotto, Y. Zhang, D. Naskar, N. Patel, D. L. Kaplan, S. C. Kundu, F. G. Omenetto.
    The optical properties of regenerated silk fibroin films obtained from different sources.
    <a href="https://doi.org/10.1063/1.4998950"><i>Appl. Phys. Lett.</i> <b>111</b>, 103702 (2017)</a>
COMMENTS: |
    Native Bombyx mori (silkworm) fibroin film
DATA:
  - type: formula 5
    wavelength_range: 0.3 1.7
    coefficients: 1.551 0.0026 -2 2.4e-4 -4
  - type: tabulated k
    data: |
        0.300 4.490000E-3
        0.310 3.680000E-3
        0.320 3.050000E-3
        0.330 2.560000E-3
        0.340 2.170000E-3
        0.350 1.850000E-3
        0.360 1.600000E-3
        0.370 1.390000E-3
        0.380 1.220000E-3
        0.390 1.070000E-3
        0.400 9.536710E-4
        0.410 8.514190E-4
        0.420 7.642460E-4
        0.430 6.894540E-4
        0.440 6.249000E-4
        0.450 5.688700E-4
        0.460 5.199830E-4
        0.470 4.771190E-4
        0.480 4.393600E-4
        0.490 4.059530E-4
        0.500 3.762740E-4
        0.510 3.498060E-4
        0.520 3.261120E-4
        0.530 3.048300E-4
        0.540 2.856490E-4
        0.550 2.683080E-4
        0.560 2.525850E-4
        0.570 2.382870E-4
        0.580 2.252510E-4
        0.590 2.133340E-4
        0.600 2.024150E-4
        0.610 1.923850E-4
        0.620 1.831520E-4
        0.630 1.746350E-4
        0.640 1.667620E-4
        0.650 1.594700E-4
        0.660 1.527040E-4
        0.670 1.464140E-4
        0.680 1.405570E-4
        0.690 1.350940E-4
        0.700 1.299910E-4
        0.710 1.252160E-4
        0.720 1.207420E-4
        0.730 1.165430E-4
        0.740 1.125990E-4
        0.750 1.088880E-4
        0.760 1.053920E-4
        0.770 1.020950E-4
        0.780 9.898160E-5
        0.790 9.603850E-5
        0.800 9.325320E-5
        0.810 9.061460E-5
        0.820 8.811220E-5
        0.830 8.573680E-5
        0.840 8.347980E-5
        0.850 8.133320E-5
        0.860 7.928980E-5
        0.870 7.734300E-5
        0.880 7.548660E-5
        0.890 7.371500E-5
        0.900 7.202300E-5
        0.910 7.040570E-5
        0.920 6.885880E-5
        0.930 6.737800E-5
        0.940 6.595960E-5
        0.950 6.459990E-5
        0.960 6.329580E-5
        0.970 6.204400E-5
        0.980 6.084190E-5
        0.990 5.968650E-5
        1.000 5.857560E-5
        1.010 5.750680E-5
        1.020 5.647780E-5
        1.030 5.548670E-5
        1.040 5.453160E-5
        1.050 5.361060E-5
        1.060 5.272220E-5
        1.070 5.186460E-5
        1.080 5.103650E-5
        1.090 5.023640E-5
        1.100 4.946310E-5
        1.110 4.871540E-5
        1.120 4.799190E-5
        1.130 4.729180E-5
        1.140 4.661390E-5
        1.150 4.595720E-5
        1.160 4.532080E-5
        1.170 4.470400E-5
        1.180 4.410570E-5
        1.190 4.352540E-5
        1.200 4.296210E-5
        1.210 4.241530E-5
        1.220 4.188420E-5
        1.230 4.136830E-5
        1.240 4.086680E-5
        1.250 4.037940E-5
        1.260 3.990530E-5
        1.270 3.944410E-5
        1.280 3.899540E-5
        1.290 3.855860E-5
        1.300 3.813330E-5
        1.310 3.771910E-5
        1.320 3.731550E-5
        1.330 3.692230E-5
        1.340 3.653890E-5
        1.460 3.259930E-5
        1.470 3.231800E-5
        1.480 3.204290E-5
        1.490 3.177380E-5
        1.500 3.151040E-5
        1.510 3.125270E-5
        1.520 3.100050E-5
        1.530 3.075350E-5
        1.540 3.051170E-5
        1.550 3.027490E-5
        1.560 3.004290E-5
        1.570 2.981560E-5
        1.580 2.959290E-5
        1.590 2.937460E-5
        1.600 2.916060E-5
        1.610 2.895080E-5
        1.620 2.874510E-5
        1.630 2.854330E-5
        1.640 2.834540E-5
        1.650 2.815120E-5
        1.660 2.796070E-5
        1.670 2.777370E-5
        1.680 2.759020E-5
        1.690 2.741010E-5
        1.700 2.723320E-5