Structural color materials have tremendous applications and been extensively investigated in the past decades. Most of them involve either nanoscale periodic photonic crystal structure or film interference mechanisms. Herein, we report a novel retroreflective structural color film (RSCF) based on a combined effect of interference and total internal reflection (TIR). The RSCF is consisted of a microscale polymer hemisphere array formed on the same polymer matrix. When exposed to white light illumination, the non-hemisphere-side of the film exhibits non-iridescent color under coaxial illumination and observation, and iridescent color under noncoaxial illumination and observation. In contrary, the hemisphere-side of the film does not show any colors regardless of coaxial or noncoaxial illumination and observation. Furthermore, an elastic polyurethane-based RSCF can exhibit dynamically and reversibly changing colors during uniaxial tensile/compressive deformation.

结构色料具有巨大的用途，并且在过去的几十年中进行了广泛的研究。它们大多数涉及纳米级周期性光子晶体结构或膜干涉机制。本文中，我们基于干涉和全内反射（TIR）的综合效应，报告了一种新型的逆反射结构彩色膜（RSCF）。RSCF由在同一聚合物基质上形成的微型聚合物半球阵列组成。当暴露于白光照射下时，膜的非半球面在同轴照明和观察下显示出非虹彩色，而在非同轴照明和观察下显示出虹彩色。相反，膜的半球侧不显示任何颜色，而与同轴或非同轴照明和观察无关。此外，