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Table 2 Polyimide substrate material properties

From: Adaptive Shape Control for Thermal Deformation of Membrane Mirror with In-plane PVDF Actuators

Parameter

Value

Thickness h s / mm

0.1

Young’s modulus E s / MPa

2170

Poisson’s ratio ν s

0.34

Density ρ s / (kg/m3)

1434

Thermal expansion coefficient α s / (°C−1)

2.9×10−5