Jump to main content
Jump to site search


Effect of nano-pillared surfaces with an arrangement density gradient on droplet coalescence dynamics

Author affiliations

Abstract

The ability to predict and control the coalescence of droplets is of great importance for both industrial and technological applications, including 3D printing, micro-cladding, and self-assembly. Here, a textured surface decorated with nano-pillared arrays was designed and its arrangement density (f) was found to significantly affect the coalescence dynamics of droplets through changing their wettability. A large arrangement density f of the nano-pillared arrays would induce a Cassie wetting state for droplets, which supports the coalescence process. But when decreasing f to a value that produces a Wenzel wetting state, the coalescence is heavily impeded by the nano-pillars. However, a very small arrangement density f is also favorable for coalescence because the pinning effect resulting from the nano-pillars becomes ignored. More importantly, special substrates were well designed by nano-pillars with a density gradient in order to control the coalescence dynamics for some potential applications. This work helps to shed light on the coalescence dynamics of droplets on a microtextured surface modified with different arranged nano-pillars and thereby provides guidance on how to control their behaviors.

Graphical abstract: Effect of nano-pillared surfaces with an arrangement density gradient on droplet coalescence dynamics

Back to tab navigation

Publication details

The article was received on 07 Aug 2018, accepted on 03 Sep 2018 and first published on 04 Sep 2018


Article type: Paper
DOI: 10.1039/C8CP05014G
Citation: Phys. Chem. Chem. Phys., 2018, Advance Article
  •   Request permissions

    Effect of nano-pillared surfaces with an arrangement density gradient on droplet coalescence dynamics

    T. Li, M. Li, J. Wang, J. Li, Y. Duan and H. Li, Phys. Chem. Chem. Phys., 2018, Advance Article , DOI: 10.1039/C8CP05014G

Search articles by author

Spotlight

Advertisements