Namib desert beetle inspired special patterned fabric with programmable and gradient wettability for efficient fog harvesting

Zhihua Yu^a^,^b, Huimei Zhang^b, Jianying Huang^a^,^*(

), Shuhui Li^a, Songnan Zhang^b, Yan Cheng^b^,^c, Jiajun Mao^a, Xiuli Dong^b, Shouwei Gao^b, Shanchi Wang^b, Zhong Chen^c, Yaoxing Jiang^b, Yuekun Lai^a^,^*(

)

Fig. 2.. The effects of copper coating on fog harvesting. (a) The fog harvesting behavior on a SHB-SHL patterned fabric from 0 min to 10 min. After 10 min, the SHB-SHL patterned fabric captured some tiny fog droplets. (b) The fog harvesting behavior on a Cu-SHB-SHL patterned fabric from 0 min to 10 min. After 10 min, the Cu-SHB-SHL patterned fabric captured more tiny fog droplets and some fog droplets grow bigger. (c) and (d) are schematic diagrams of the dynamic collection process of SHB-SHL and Cu-SHB-SHL, respectively. Inserted image is a digital photo of Namib desert beetle (copyright 2001, Nature) [5]. The water in the sprayer was dyed with methyl blue for better viewing. The scale bars are 3 mm.