Dynamics of droplet impingement on bioinspired surface: insights into spreading, anomalous stickiness and break-up.

ABSTRACT: Inspired by the self-cleaning ability of lotus leaves and stickiness (towards water) of rose petals, we investigate the droplet impact dynamics on such bioinspired substrates. Impact studies are carried out with water droplets for a range of impact velocities on glass, PDMS and soft lithographically fabricated replicas of the lotus leaf and rose petals, which exhibit near identical wetting properties as that of the original biological entities. In this work, we investigate the spreading, dewetting and droplet break-up mechanisms subsequent to impact. Surprisingly, the rose petal and lotus leaf replicas manifest similar impact dynamics. The observation is extremely intriguing and counterintuitive, as rose petal and its replicas are sticky in contrast to lotus leaves. However, these observat

SUBMITTER: Roy D 

PROVIDER: S-EPMC6784407 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature