Bioinspired Flat and Conical Surfaces for Water Harvesting

Abstract

It has been mentioned in Chap. 3, that beetles use surfaces, heterogeneous wettability cactus spines spider silk use conical geometry, and blades of grass use longitudinal grooves to drive water droplets for water transport and storage/use, before they evaporate. Bioinspired surfaces for water harvesting from fog have been inspired by the beetle (Garrod et al. 2007; Bai et al. 2014; Gurera and Bhushan 2019a), grass (Azad et al. 2015; Gurera and Bhushan 2019a, b), and cactus (Ju et al. 2013; Gurera and Bhushan 2019a, b, c, d; Schriner and Bhushan 2019). For water harvesting from condensation of water vapor, cactus- and spider silk-inspired conical surfaces have also been used (Gurera and Bhushan 2020).