Table 1 Physical properties of four materials.

From: Conformal smoothing of mid-spatial frequency surface error for nano-accuracy Continuous Phase Plates (CPP)

Material

E(Pa)

ν

Steel

2.09E + 11

0.269

Aluminum

6.90E + 10

0.33

ABS

2.00E + 09

0.39

Silica gel

1.00E + 05

0.35

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