New high-density deformable mirrors for high-contrast imaging

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Table 2

Material properties.

Material	Young’s modulus	Stress σ	Poisson’s	Density	Roughness
	(GPa)	(MPa)	ratio	(g/cm³)	(nm)


CVD diamond¹	610–1140	0 to 100	0.1	3.51	1–3
Al²	65–80	20	0.35	2.7	1–10
Al0.5%Cu³	60–120	–20	0.33	2.7	1
Au⁴	70	–180 to 77	0.44	19.3	2–3^†

Notes.

^(†)

Direct AFM measurements of gold coated mirror.

⁽¹⁾

Hess (2012) for a complete review of CVD-diamond mechanical properties.

⁽²⁾

Mearini (1992).

⁽³⁾

Barron (2005).

⁽⁴⁾

Pandey et al. (2009), Salvadori et al. (2003), Thornell et al. (1999).

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