Journal of Bionic Engineering ›› 2021, Vol. 18 ›› Issue (3): 548-558.doi: 10.1007/s42235-021-0046-7
Slippery Photothermal Trap for Outstanding Deicing Surfaces
Muhammad Imran Jamil1, Qiongyan Wang2, Amjad Ali3, Munir Hussain3, Tariq Aziz1,
Xiaoli Zhan1,4, Qinghua Zhang1,4*
- 1. Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China.
2. Zhejiang Sucon Silicone Co., Ltd. Shaoxing, Shaoxing 312000, China
3. Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
4. Institute of Zhejiang University-Quzhou, Quzhou 324000, China
Slippery Photothermal Trap for Outstanding Deicing Surfaces
Muhammad Imran Jamil1, Qiongyan Wang2, Amjad Ali3, Munir Hussain3, Tariq Aziz1, #br# Xiaoli Zhan1,4, Qinghua Zhang1,4*#br#
- 1. Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China.
2. Zhejiang Sucon Silicone Co., Ltd. Shaoxing, Shaoxing 312000, China
3. Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
4. Institute of Zhejiang University-Quzhou, Quzhou 324000, China
摘要： Ice accumulation is a safety and operational threat in power lines, wind turbines, and transportations. Surfaces having both passive anti-icing and active deicing functionalities are very rare. Here, we report a self-cleaning slippery photothermal trap, which is icephobic passively and deice the surfaces actively by converting sun light to heat at the ice-substrate interface. The photothermal trap consists of three layers: a candle soot layer act as solar radiation absorber, a magnetic iron oxide Fe3O4 nanoparticles layer act as heat spreader for lateral dispersal of sun light, and Room Temperature Vulcanized (RTV) insulation to reduce the transverse heat loss. Upon illumination under microsolar 300, the temperature of the surface increased by 40 ?C within 200 s. The heat confinement at the magnetic Fe3O4 nanoparticles layer leads to rapid increase of the surface temperature, ice start to melt and silicone lubricant facilitates the ice removal. The slippery photothermal trap removed the frozen droplet (10 μL) within 40 s upon the illumination of sun light and the frozen droplet was completely converted into water after 7 min illumination of solar light at ?20 ?C. The developed slippery photothermal trap also melted the fully frost covered layer within 100 s at ?20 ?C under sunlamp. The average defrosted length (25 mm) was also observed by irradiation of laser light for 45 s. The self-cleaning slippery photothermal coating showed outstanding deicing performance at subzero temperature for long term due to the infusion of silicone oil into the nanostructures and same chemical composition with binder.