A finite difference time domain (FDTD) simulation was adopted to initially illuminate a neglected phenomenon that SiO₂ nanospheres in superhydrophobic layer could enhance the light absorption capacity of the layer itself, and of the contiguous photothermal semiconductor simultaneously. Guided by this simulation, a solar thermal coating (STC) composed of superhydrophobic SiO₂ nanospheres and CuFeMnO₄/PDMS was assembled to achieve highly efficient icephobicity. The accurate tests illustrated the temperature rise originated from the semiconductor layer by photothermal effect and superhydrophobic layer by self-heating effect, which was consistent with the simulation results. Depending on the high photothermal conversion efficiency, the freezing temperature of droplets on STC dropped to -35 °C, the ice adhesion strength decreased from 78.5 kPa to 12.1 kPa and an ice layer was removed within 99 s under the light illumination. Furthermore, STC could be further adopted in a cold natural environment, and deicing in 12 mins. The simulation-guided construction of STC provides a new design strategy for icephobic coatings and new insights on energy management analysis in superhydrophobic photothermal composite coating.

采用时域有限差分法（FDTD）初步阐明了超疏水层中的SiO ₂纳米球可以同时增强该层本身和连续光热半导体的光吸收能力的被忽视现象。在此模拟的指导下，由超疏水SiO ₂纳米球和CuFeMnO ₄组成的太阳热涂层（STC）/ PDMS被组装以实现高效的疏冰性。准确的测试表明，温度升高是由于光热效应引起的半导体层的温度升高，而由于自热效应引起的超疏水层的温度升高，与仿真结果相吻合。取决于高的光热转化效率，液滴在STC上的凝固温度降至-35°C，冰的粘附强度从78.5 kPa降低至12.1 kPa，并且在光照下在99 s内去除了冰层。此外，STC可以在寒冷的自然环境中进一步采用，并在12分钟内除冰。STC的模拟指导构造为憎冰涂层提供了新的设计策略，并为超疏水光热复合涂层的能量管理分析提供了新的见解。