Conductive Electrochemically Active Lubricant‐Infused Nanostructured Surfaces Attenuate Coagulation and Enable Friction‐Less Droplet Manipulation,Advanced Materials Interfaces

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Conductive Electrochemically Active Lubricant‐Infused Nanostructured Surfaces Attenuate Coagulation and Enable Friction‐Less Droplet Manipulation
Advanced Materials Interfaces ( IF 4.3 ) Pub Date : 2018-07-04 , DOI: 10.1002/admi.201800617
Amin Hosseini ₁ , Martin Villegas ₁ , Jie Yang ₁ , Maryam Badv ₁ , Jeffrey I. Weitz ₂ , Leyla Soleymani _{1,

3} , Tohid F. Didar _{1,

4}

Affiliation

Micro/nanostructured materials and lubricant‐infused surfaces, both inspired from structures found in nature, are ideally suited for developing self‐cleaning and high surface area transducers for biosensing. These two classes of bio‐inspired technologies are integrated to develop lubricant‐infused electrodes designed to reduce biofouling. Chemical vapor deposition is used to create self‐assembled monolayers of fluorosilane on gold‐modified prestrained polystyrene substrates. After heat shrinking of the substrate, a lubricant is applied to produce a lubricant‐infused nanostructured gold wrinkled surface with hydrophobic properties. These electrically conductive surfaces demonstrate high water contact (≈150°) and low sliding angles (<5°). Moreover, combining these surfaces with passive magnetic actuators enables the actuation of super‐paramagnetic microdroplets in frictionless and open channel conditions without needing full droplet submersion in an immiscible fluid. The fabricated nanostructured surfaces resist protein adhesion in a human plasma coagulation assay and significantly prolong clotting times and retain electrical conductivity, which is essential for electrical sensing applications. The developed hybrid interfaces are expected to have a wide range of applications in biosensing and biological sample preparation involving complex clinical and environmental samples.

中文翻译：

导电的电化学活性润滑剂注入的纳米结构表面可减弱凝结并实现无摩擦的液滴操纵

微米/纳米结构材料和注入润滑剂的表面均受自然结构启发，非常适合开发用于生物传感的自清洁和大表面积传感器。这两类生物启发技术被集成在一起，以开发旨在减少生物污染的润滑剂注入电极。化学气相沉积用于在金改性的预应变聚苯乙烯基板上创建自组装的氟硅烷单层。基材热收缩后，施加润滑剂以产生具有疏水特性的注入润滑剂的纳米结构金皱纹表面。这些导电表面显示出高的水接触性（≈150°）和低的滑动角（<5°）。而且，将这些表面与无源磁致动器结合使用，可以在无摩擦和明渠条件下驱动超顺磁性微滴，而无需将液滴完全浸没在不混溶的流体中。所制造的纳米结构表面可在人体血浆凝结测定中抵抗蛋白质粘附，并显着延长凝血时间并保留导电性，这对于电传感应用至关重要。开发的混合接口有望在涉及复杂临床和环境样本的生物传感和生物样本制备中具有广泛的应用。所制造的纳米结构表面可在人体血浆凝结测定中抵抗蛋白质粘附，并显着延长凝血时间并保留导电性，这对于电传感应用至关重要。开发的混合接口有望在涉及复杂临床和环境样本的生物传感和生物样本制备中具有广泛的应用。所制造的纳米结构表面可在人体血浆凝结测定中抵抗蛋白质粘附，并显着延长凝血时间并保留导电性，这对于电传感应用至关重要。开发的混合接口有望在涉及复杂临床和环境样本的生物传感和生物样本制备中具有广泛的应用。

更新日期：2018-07-04

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