Author(s): Yusong Tian; Chunyu Li; Guang Yang; Mingkun Xiao; Aifeng Cai; Jingyi Wu
Linked Author(s):
Keywords: Micro-structured arrays; Spatial distribution; Ice propagation suppression; Anti-icing
Abstract: Ice accretion poses significant operational and safety challenges in maritime transport and polar navigation, often leading to equipment performance degradation and hazardous conditions. Inspired by the theory of submillimeter dry zones and hygroscopic effects, this study proposes a passive surface engineering strategy for the selective regulation of ice propagation and growth. Ridge and pillar micro-array structures with varying spacing ratios were fabricated to spatially control icing behavior. Experimental investigations reveal distinct control mechanisms associated with different array geometries. Pillar arrays demonstrate a highly regular regulatory effect during the condensate droplet growth stage, producing a checkerboard-like droplet distribution with smaller droplet sizes. By optimizing the spacing ratio between pillars, the development of inter-droplet ice bridges is effectively suppressed, leading to a remarkable delay in ice initiation by over 400% and maintaining frost coverage below 25% at 600s. In contrast, ridge arrays exhibit superior control during the ice-zone freezing and spatial distribution phases, particularly at larger spacing ratios where spontaneous dry zone formation is observed. This design enables the surface to maintain a low ice-coverage ratio for extended durations. This work provides practical design guidelines for developing effective anti-icing strategies based on low-coverage surface engineering.
Year: 2026