Optical sensor based on shape memory between scattering and transparent modes

摘要

A composite comprising an upper layer and a substrate layer, wherein the upper layer comprises a shape-memory polymeric material having a glass transition temperature T_g,SMP and being at least partially transparent for light in the VIS-range, characterized in that the upper layer comprises a surface, wherein the surface is at least partially a rough surface having an arithmetic average roughness R_a of at least 0.1 μm.