Efficient water scavenging by cooling superhydrophobic surfaces to obtain jumping water droplets from air.

ABSTRACT: Dew collection is significant in harvesting water and relieving water shortages in arid regions. However, current methods for collecting dew or steam are mainly focusing on the millimeter-sized droplets condensed on the superhydrophobic surfaces. Here, we present a concept for harvesting micro droplets that can spontaneously bounce on the cooling superhydrophobic aluminum surface with randomly micro-nano composite structures, which were fabricated by using a two-step surface structural process. Moreover, an integrated device has been developed, which consists of a triboelectric nanogenerator and the superhydrophobic aluminum sheet. We experimentally explained that the triboelectric nanogenerator, which provides an external electric field by converting wind energy to electric energy with DC

SUBMITTER: Ma X 

PROVIDER: S-EPMC6760228 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature