基于等离激元颗粒的透明光热防/除冰薄膜研究

Study on Plasmonic Nanoparticles-based Photothermal Films for Transparent Anti/de-icing

基于等离激元效应利用太阳能光热防除冰是目前解决防除冰问题经济、有效、环保的方法之一。本研究提出了一种基于等离激元颗粒的透明光热薄膜,耦合离散偶极近似法、Mie理论及蒙特卡罗方法对薄膜材料的表观辐射特性进行了模拟。计算结果表明,该光热薄膜可选择性地透射可见光并吸收紫外光、蓝紫光和红外光,非可见光吸收率、蓝光吸收率和非蓝光透过率分别可达82.2%、91.8%和78.2%。采用蒙特卡罗光线追踪法模拟了光线在不同润湿性表面冰滴中的传输过程。结果表明,超亲水表面对透过率和雾度的影响最小,疏水表面对光线透过率最低。研究结果为透明光热防除冰材料提供了一种新方案。

Currently,the utilization of solar energy based on the plasmon resonance effect is one of the economical,effective,and environmentally friendly ways to resolve issues of anti/de-icing.This study proposes a new transparent photothermal film based on plasmonic particles.The apparent radiation characteristics of the film are simulated via the combination of the Discrete Dipole Approximation method,Mie theory,and Monte Carlo method.The results show that the transparent photothermal film selectively transmits visible light and absorbs ultraviolet,blue-violet,and infrared light.It achieves a non-visible light absorbance of 82.2%,a blue light transmittance of 91.8%,and a non-blue light transmittance of 78.2%.With different surface wettabilities,the Monte Carlo ray tracing method is employed to simulate the light transfer through the ice droplets.The results show that the super-hydrophilic surfaces have a minimal impact on transmittance and haze,and the transmittance of hydrophobic surfaces is the lowest.This work provides a new option for transparent photothermal anti/de-icing materials.