A review on control of droplet motion based on wettability modulation: principles, design strategies, recent progress, and applications. Issue 1 (31st December 2022)

• Record Type: Journal Article
• Authors: Tenjimbayashi, Mizuki; Manabe, Kengo
• Is Part Of: Science and technology of advanced materials. Volume 23:Issue 1(2022)
• Page Start: 473
• Page End: 497
• Publication Date: 2022-12-31
• Subjects: Droplet manipulation -- wetting -- hydrophobic -- functional interface -- biomimetics -- responsive materials -- gradient structure -- surface modification -- superwetting -- thin film; Materials -- Technological innovations -- Periodicals; 620.112
• DOI: 10.1080/14686996.2022.2116293
• Languages: English
• ISSNs: 1468-6996

Abstract

ABSTRACT: The transport of liquid droplets plays an essential role in various applications. Modulating the wettability of the material surface is crucial in transporting droplets without external energy, adhesion loss, or intense controllability requirements. Although several studies have investigated droplet manipulation, its design principles have not been categorized considering the mechanical perspective. This review categorizes liquid droplet transport strategies based on wettability modulation into those involving (i) application of driving force to a droplet on non-sticking surfaces, (ii) formation of gradient surface chemistry/structure, and (iii) formation of anisotropic surface chemistry/structure. Accordingly, reported biological and artificial examples, cutting-edge applications, and future perspectives are summarized. Graphical abstract: uf0001