Conformability of a Thin Elastic Membrane Laminated on a Soft Substrate With Slightly Wavy Surface

摘要: When laminating a thin elastic membrane on substrate with surface roughness, three scenarios can happen: fully conformed (FC), i.e., the completely follows morphology of without any interfacial gap, nonconformed (NC), remains flat if gravity is not concerned, and partially (PC). Good conformability enhance effective membrane-to-substrate adhesion strength facilitate signal/heat/mass transfer across interface, which are great importance to soft electronics laminated rough bio-tissues. To reveal governing parameters in this problem predict conformability, energy minimization implemented after successfully finding under conformable contact. Four dimensionless involving thickness, moduli, intrinsic work have been identified analytically status area The analytical prediction has found excellent agreement experimental observations. In summary, an experimentally validated quantitative guideline for corrugated established four-parameter design space.