Facile approach to design a stable, damage resistant, slippery, and omniphobic surface.
Facile approach to design a stable, damage resistant, slippery, and omniphobic surface.
复制标题
设计稳定、抗损坏、光滑和无所不能的表面的简便方法
作者：
创建一个强大的全憎性表面，排斥各种液体将有广泛的技术影响，从生物医学设备和燃料运输到建筑领域。目前的全憎表面仍然存在制备方法复杂、成本高、对环境有害等问题。为了解决这些挑战，在这里，我们报告了一种新的方法来设计一种非氟化的，长期光滑的蜡烛烟灰纳米粒子的全憎性表面，其中有机硅粘合剂在室温下固化。多孔性、纳米级粗糙度、基底与有机硅润滑剂的强亲和力以及粘合剂固化后润滑剂的保留对其在零度以下温度下的稳定性和低冰粘附强度起重要作用。开发的表面表现出抗损坏的光滑性能，对包括血液在内的几种具有不同表面张力的液体的排斥性，冰点沿着延迟，具有超低的冰粘附强度（2 kPa），并在恶劣的环境条件下保持它甚至低于7 kPa;在-90 °C下90次结霜/除霜循环;在冰层下2个月;在60 °C下2个月;在酸性/碱性水中流动并暴露于超冷水中9天。此外，这种新技术便宜，易于制造，环境友好，适合大规模应用。
Creating a robust omniphobic surface that repels various liquids would have broad technological implications for areas ranging from biomedical devices and fuel transport to architecture. The present omniphobic surfaces still have the problems of complex fabrication methods, high cost, and being environmentally harmful. To address these challenges, here we report a novel process to design a non-fluorinated, long-term slippery omniphobic surface of candle soot nanoparticles with a silicone binder that cures at room temperature. The porosity, nanoscale roughness, strong affinity of the substrate with the silicone lubricant, and retention of lubricant after curing of the binder play an important role in its stability and low ice adhesion strength at sub-zero temperature. The developed surface exhibits damage resistant slippery properties, repellency to several liquids with different surface tensions including blood, delay in freezing point along with ultra-low ice adhesion strength (2 kPa) and maintains it even below 7 kPa under harsh environmental conditions; 90 frosting/defrosting cycles at −90 °C; 2 months under an ice layer; 2 months at 60 °C; 9 days flow in acidic/basic water and exposure to super-cold water. In addition, this novel technique is cheap, easy to fabricate, environmentally benign and suitable for large-scale applications.
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影响因子：
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作者：
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