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首页> 外文期刊>Bulletin of the American Physical Society >APS -Annual Meeting of the APS Four Corners Section- Event - Droplet Manipulation to Detect Surface Tesnion
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APS -Annual Meeting of the APS Four Corners Section- Event - Droplet Manipulation to Detect Surface Tesnion

机译：APS-APS四角区年会-活动-检测表面Tesnion的液滴操作

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Droplet manipulation on super-repellent surfaces has been widely studied using different methods because droplets exhibit high mobility, minimal contamination and minimal sample loss on such surfaces. However, to the best of our knowledge, there are no studies that employ super-repellent surfaces to sort droplets based on surface tension. In this work, we synthesized tunable superomniphobic surfaces with fluorinated, flower-like TiO$_{mathrm{2}}$ nanostructures. We demonstrate that the surface chemistry of our superomniphobic surfaces can be tuned using UV irradiation. This allows us to systematically tune the mobility of droplets with different surface tensions on our superomniphobic surfaces. Each of these surfaces with same surface texture, but different solid surface energy allows certain high surface tension liquid droplets to freely roll past the surface while ``trapping'' other low surface tension liquid droplets due to adhesion. Leveraging this selective mobility of droplets based on their surface tension, we fabricated a simple device with precisely tailored discrete surface energy domains that, for the first time, can sort droplets by their surface tension. The novelty of our work lies in the design of discrete and tunable superomniphobic domains as well as the ability of the device to sort droplets by surface tension. We envision that our droplet sorting device will enable inexpensive and analytical devices for personalized point-of-care diagnostic platforms.
机译：使用不同的方法对超疏水表面上的液滴进行了广泛的研究，因为液滴在此类表面上显示出高迁移率，最小的污染和最小的样品损失。然而，据我们所知，尚无研究采用超抗性表面根据表面张力对液滴进行分类。在这项工作中，我们合成了具有氟化的花状TiO $ _ {mathrm {2}} $纳米结构的可调超疏水表面。我们证明了可以使用紫外线辐射来调节我们的超憎水表面的表面化学。这使我们能够系统地调整超疏疏性表面上具有不同表面张力的液滴的迁移率。这些表面中的每个表面具有相同的表面纹理，但具有不同的固体表面能，允许某些高表面张力液滴自由滚动通过表面，同时由于粘附而``捕获''其他低表面张力液滴。利用基于液滴表面张力的选择性移动性，我们制造了一种具有精确定制的离散表面能域的简单设备，该装置首次可以通过其表面张力对液滴进行分类。我们工作的新颖性在于离散和可调的超疏水域的设计，以及该设备通过表面张力对液滴进行分选的能力。我们设想，我们的液滴分选设备将为个性化即时诊断平台提供价格低廉的分析设备。

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