レーザー干渉加工法による樹脂表面への撥液テクスチャリングの付与技術

抄録

Omniphobic surface, which has both hydrophobicity and oleophobicity, is needed as a technique of industrial application because liquid in the environment is a complex mixture of water and oil. In this study, polymer surfaces were textured using laser interferometry to obtain the porous surfaces required for omniphobic surface. An optical unit was fabricated from a liquid crystal on a silicon-spatial light modulator, a collimated lens, a mask with two holes, a beam expander, and an aspheric condensing lens. After coupling the prepared porous surface, lubricating oil was applied. The sliding speed and sliding durability were shown to be optimized by the depth of grooves and surface roughness, processing conditions were demonstrated where water and oleic acid slide off at an inclination angle of 10°.