Asymmetric Soft‐Structure Functional Surface for Intelligent Liquids’ Distinction, Transportation, and Reaction Mixer

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

View graph of relations

Detail(s)

Original languageEnglish
Article number2209769
Number of pages10
Journal / PublicationAdvanced Functional Materials
Online published31 Oct 2022
Publication statusOnline published - 31 Oct 2022

Abstract

Structured surfaces have attracted wide attention because of their great potential in directional transport, liquid collection or separation, microfluidics, etc. However, it remains a big challenge to design a surface that can distinguish various liquids, utilize their inherent properties to control their transportation, and realize functional applications. Herein, it is presented an asymmetric soft‐structure functional surface (ASFS) with arrayed curvature units that can make the Laplace pressure as a driving force to determine the preferential spreading direction and show abundant transport behaviors for liquids with different surface tensions. With good deformability, the proposed ASFS can directionally transport liquids along complex terrains, e.g., 1D‐tilted, 2D‐curved, and 3D‐helical trajectories. It is also demonstrated that the ASFS can achieve synchronous or asynchronous liquid mixing by choosing appropriate liquids. Moreover, the intelligent response ability allows the ASFS to be a portable contact angle discriminator. This study proposes a new strategy to manipulate liquids via their intrinsic properties and opens new avenues for application‐oriented liquid operation surfaces.

Research Area(s)

  • directional transport, intelligent responses, liquid discrimination, liquid manipulation, structured surfaces