Evaporation Dynamics of Deionized Water Droplets on Hydrophobic Leaves

• DOI: 10.1021/acs.langmuir.4c04207
• Publication Date: 2025-01-13T15:35:47Z
• Authors: Zhuorui Li; Yali Guo; Denghui Zhao; Chengtao Yan; Panagiotis E. The...; Bin Liu

Self-cleaning applications based on bionic surface designs requires an in-depth understanding of unique and complex wetting evaporation processes sessile droplets natural biosurfaces. To this end, hydrophobic bamboo Kalanchoe blossfeldiana leaves are excellent candidates for self-cleaning applications, but various properties, such as the heat mass transfer during evaporation, remain unknown. Here, dynamics contact angle, radius, with roughness in range 2.8–3.4 μm thoroughly investigated. In particular, "stick–jump" phenomenon is observed leaves, which was further analyzed terms Gibbs free energy indicates that a larger would also render more likely jump drops. Moreover, by means Wenzel model, functional relation between rough structure parameters leaf system intrinsic barrier established, kinetics elucidated. We anticipate study offers framework behavior biomimetic materials, may lead to rational design bionic-type surfaces.