A biomimetic surface with switchable contact angle and adhesion for transfer and storage of microdroplets†,Nanoscale

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A biomimetic surface with switchable contact angle and adhesion for transfer and storage of microdroplets†
Nanoscale ( IF 5.8 ) Pub Date : 2018-07-18 00:00:00 , DOI: 10.1039/c8nr04998j
Hanpeng Gao _{1,

2,

3,

4} , Yan Liu _{1,

2,

3,

4} , Shuyi Li _{1,

2,

3,

4} , Guoyong Wang _{2,

4,

5,

6} , Zhiwu Han _{1,

2,

3,

4} , Luquan Ren _{1,

2,

3,

4}

Affiliation

Recently, superhydrophobic surfaces with switchable wettability have attracted much attention. The ability to control the contact angle and adhesion of the multifunctional smart surface will be more beneficial to meet the complex practical applications, but until now this has been a challenge. Inspired by rose petals, we report a smart, biomimetic, and superhydrophobic surface whose wettability can switch reversibly between superhydrophobicity and superhydrophilicity on the Cu substance. At the same time, we can control the adhesion on the as-prepared superhydrophobic surface by covering and removing the ink. Thus, the as-prepared surface can be used as a medium for microdroplet transfer and storage. Compared with the original Cu substrate, electrochemical measurements show that the corrosion inhibition of the superhydrophobic surface is significantly improved. Good corrosion resistance allows the platform to be used to manipulate or store more types of microdroplets, especially corrosive microdroplets. In addition, the as-prepared surface has a good stability which facilitates the practical application of the as-prepared smart surface. This work provides a smart and effective strategy for lossless transfer and patterned storage of microdroplets. It is also promising for the design of new smart interface materials such as for biological cell manipulation, chemical microreaction and other types of microfluidic devices.

中文翻译：

具有可切换接触角和附着力的仿生表面，用于微滴的转移和存储†

近来，具有可调节的润湿性的超疏水表面引起了很多关注。控制多功能智能表面的接触角和附着力的能力将更加有益于满足复杂的实际应用，但是直到现在，这一直是一个挑战。受玫瑰花瓣的启发，我们报道了一种智能，仿生和超疏水性的表面，其润湿性可以在Cu物质的超疏水性和超亲水性之间逆转。同时，我们可以通过覆盖和除去墨水来控制在准备好的超疏水表面上的附着力。因此，所制备的表面可以用作微滴转移和存储的介质。与原始的铜基板相比，电化学测量表明，超疏水表面的腐蚀抑制作用得到了显着改善。良好的抗腐蚀性使该平台可用于操纵或存储更多类型的微滴，尤其是腐蚀性微滴。另外，所制备的表面具有良好的稳定性，这有利于所制备的智能表面的实际应用。这项工作为微滴的无损转移和图案化存储提供了一种明智而有效的策略。它也有望用于新型智能接口材料的设计，例如用于生物细胞操纵，化学微反应和其他类型的微流体设备。另外，所制备的表面具有良好的稳定性，这有利于所制备的智能表面的实际应用。这项工作为微滴的无损转移和图案化存储提供了一种明智而有效的策略。它也有望用于新型智能接口材料的设计，例如用于生物细胞操纵，化学微反应和其他类型的微流体设备。另外，所制备的表面具有良好的稳定性，这有利于所制备的智能表面的实际应用。这项工作为微滴的无损转移和模式存储提供了一种明智而有效的策略。它也有望用于新型智能接口材料的设计，例如用于生物细胞操纵，化学微反应和其他类型的微流体设备。

更新日期：2018-07-18

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