해수 담수화를 위한 친환경 다중 스케일 복합구조 3D 프린팅 태양 증발기 연구

In this study, we propose the possibility of developing 3D printed multiscale solar evaporator to maximize the water absorption and evaporation. The core of this research lies in maximizing the total evaporation surface area and evaporation rate by adjusting the Moiré Angle, the layer-stacking angle during the printing process. To enhance surface wettability and micro/nano evaporation, O₂ plasma etching was conducted, forming hydrophilic nanostructures on the evaporator surface. After O₂ plasma treatment, the water contact angle(WCA) of the evaporator surface decreased from 85° to 0°. The water evaporation rate of the solar evaporator was measured by comparing the weight reduction of water over time in the same environment under varying printing conditions. Results showed that, over a week, the evaporation rate ranged from 3.1 kg/m² to 5.7 kg/m² depending on conditions. These findings suggest the potential of Moiré pattern-based solar evaporators for seawater desalination applications.