Conformability of a Thin Elastic Membrane Laminated on a Rigid Substrate With Corrugated Surface

摘要: When laminating a thin elastic membrane on substrate with surface roughness, three scenarios can happen: 1) fully conformed, i.e., the completely follows morphology of without any interfacial gap; 2) partially conformed; and 3) nonconformed, remains flat if gravity is not concerned. Good conformability enhance effective membrane-to-substrate adhesion facilitate heat/signal transfer across interface, which are great importance for micromembranes or nanomembranes transferred target substrates flexible electronics laminated rough biotissues. To reveal governing parameters in this problem to predict conformability, energy minimization method implemented two different models, versus traction-separation relation. Depending complexity one four dimensionless have been identified analytically status point delamination partial expected. In case, achieved only when considered.