Switchable smart porous surface for controllable liquid transportation

Abstract

Controllable liquid transportation through smart porous membrane is expected by manipulating the surface wetting properties and external stimuli, which has been intensively studied. However, the liquid transportation, e.g., permeation and...

Gradient monolayered porous membrane for liquid manipulation: from fabrication to application

“…54,115,116 Ferrouid, a kind of intelligent liquid, can adjust the surface topography under the action of a magnetic eld, which can be used as intelligent liquid gating to control liquid transport on demand. 89,[117][118][119][120] For example, our group prepared a magnetically responsive switchable surface. By injecting magnetic liquid into the micro/nano porous composite membrane, the pore structure on the membrane surface can be quickly closed and opened by a magnetic eld, meaning the liquid transport process can be interrupted and restarted (Fig.…”

“…5b). 118 Tian's group reported magnetic nanouidic gating (MGN) based on the integration of a superhydrophilic membrane and a recongurable ferrouid, and realized control over the nanochannel by adjusting the spatial conguration of the fer-rouid, in which the recongurable shape of the ferrouid can be used to control ion transport. 119 Sheng's group created an elastomeric microporous membrane-based system, in which surface pore size can be adjusted by stretching, which could be used to dynamically control and modulate gas/liquid transport (Fig.…”

An interfacial floating tumbler with a penetrable structure and Janus wettability inspired by Pistia stratiotes

“…This unidirectional penetration is attributed to the asymmetric structure of the channel ends and the wettability difference, 37,38 and the Laplace pressure of the extruded droplet may strongly restrict the expulsion of water at the superhydrophobic surface with a small pore. 39 Moreover, the channel diameter ranging from 1 to 5.5 mm can be tuned using the glucose template. When the channel diameter is less than 1.5 mm, one-way water penetration is achieved.…”