Table 3.

General requirements of substrate materials for flexible devices [142].

Mechanical Properties	Elastic Modulus		Stiffness		Deformability
	High		Low		High
Electrical Properties	Electrical Insulation		Dissipation Factor		Electrical Stability
	High		High		High
Thermal Properties	Coefficient of Linear Thermal Expansion (CTE)		Moisture Absorption		Thermal Stability
	Low		Low		High
Other Properties	Chemical Inertness	Weight	Fabrication Complexity	Surface Roughness	Opaqueness	Cost
	High	Low	Low	Depends on application	Depends on application	Low