Cross-species biological excitation in-situ reversible triple switchable wettability surface structure for intelligently controlling liquid drops and application thereof

Abstract

The invention discloses a cross-species biological excitation in-situ reversible triple switchable wettability surface structure for intelligently controlling liquid drops. A processing method of the cross-species biological excitation in-situ reversible triple switchable wettability surface structure for intelligently controlling the liquid drops comprises the following steps of: manufacturing a micropore array as a template on polytetrafluoroethylene by adopting a femtosecond laser direct writing technology; adhering a double-sided adhesive tape to the bottom of the polytetrafluoroethylene template, and pouring a mixture of polydimethylsiloxane, a curing agent and carbonyl iron powder into the polytetrafluoroethylene template to form a micron column array; casting silica gel on the polytetrafluoroethylene template, carrying out spin coating and curing on the silica gel, and stripping the polytetrafluoroethylene template to obtain the super-hydrophobic high-adhesion surface structure; modifying the obtained super-hydrophobic high-adhesion surface structure by a femtosecond laser to obtain the cross-species biological excitation in-situ reversible triple switchable wettability surface structure for intelligently controlling the liquid drops. The cross-species biological excitation in-situ reversible triple switchable wettability surface structure for intelligently controlling the liquid drops possesses the superior capability of switching among the lotus-shaped effect, the rice leaf-shaped anisotropy and the rose petal-shaped effect in an in-situ reversible mode.

Description

Technical field [0001] The present invention relates to the field of wetting surface structures, and in particular, a cross-type biological excitation surface structure and application for cross-species biostiles for intelligent manipulation droplets. Background technique [0002] The prior art implements a specific function by imitating surface wettability of a particular organism, making a huge contribution to human life. Such as a single imitation lotus surface is self-cleaning, a single imitation rice leaves anisotropic function surface, and a single imitation rose petal tie effect. From scientific research and actual perspective, a single structure greatly limits the development of bionic function surfaces. Therefore, the study of cross-mastic bionic surfaces with switchable wettability has become the direction of researchers. [0003] It is well known that the wettability of the surface is the result of the synergistic effect of surface microstructure and its chemical compo...

AI Technical Summary

Problems solved by technology

First, the tunable wettability on superhydrophobic surfaces is always tuned in an ex-situ manner, which greatly limits their applications in certain fields, such as the intelligent manipulation of liquid droplets.

Furthermore, to the best of our knowledge, although some tunable wettability surfaces have been demonstrated, whether by tuning surface chemistry or microstructure, all exhibit dual switchable wettability

It should be emphasized that none of them can achieve triple dynamic switching

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