Self‐Supplying Liquidity Oil‐Adsorbed Slippery Smooth Surface for Both Liquid and Solid Repellency
Self‐Supplying Liquidity Oil‐Adsorbed Slippery Smooth Surface for Both Liquid and Solid Repellency
复制标题
DOI：
10.1002/admi.201901818
复制
发表时间：
2020-01
影响因子：
5.4
通讯作者：
Kengo Manabe;M. Nakano;Y. Hibi;K. Miyake
中科院分区：
文献类型：
--
作者：
Kengo Manabe;M. Nakano;Y. Hibi;K. Miyake
受猪笼草的启发，由纹理/光滑基层和液体层组成的光滑液体注入表面（利斯）是一种令人兴奋的新兴超防水表面。在本文中，具有平坦基底层的光滑LIS被开发为多功能摩擦表面，其被称为减摩流动性油吸附摩擦表面（FLOAT）。FLOAT是通过一种新型的自供给润滑剂策略构建的，该策略基于固体基层和注入液体层之间界面处的π-COOH相互作用，由液体吸附的光滑表面构成，从而大幅降低摩擦。对于小于涂层强度的载荷，FLOAT证明摩擦系数为0.05;对于大于或等于涂层强度的载荷，通过使用基于涂层的选择性塌陷凹部处的苯基基团的相互作用的自供给液体层将液体层保持在FLOAT基层和摩擦物体之间，实现摩擦系数为0.08。此外，FLOAT容易脱落粘性和粘弹性材料，显示出高透明度，并且可以使用可控的图案化表面容易地制造。本文展示的FLOAT显示出作为下一代摩擦表面的潜力，并为各种实际应用的多功能液体表面的设计提供了新的见解。
Inspired by pitcher‐plants, slippery liquid‐infused surfaces (LISs) comprised of a textured/smooth base‐layer and a liquid‐layer are an exciting emerging class of super‐repellent surfaces. Herein, a smooth LIS with a flat base‐layer is developed as a multifunctional tribosurface, which is termed a friction‐reducing liquidity oil‐adsorbed tribo‐surface (FLOAT). The FLOAT is constructed via a novel self‐supplying lubricant strategy from liquid‐adsorbed smooth surfaces based on π–COOH interactions at the interface between the solid base‐layer and the infused‐liquid‐layer, resulting in a drastic friction reduction. The FLOAT demonstrates a friction coefficient of 0.05 for loads less than the strength of the coating; for loads greater than or equal to the strength of the coating, a friction coefficient of 0.08 is achieved by holding the liquid‐layer between the FLOATs base‐layer and the friction object using a self‐supplying liquid‐layer based on the interactions of the phenyl groups at the selectively collapsing concaves of the coating. Furthermore, the FLOAT easily sheds off both viscous and viscoelastic materials, shows high transparency, and can be easily fabricated using a controllable patterning surface. The FLOAT demonstrated herein shows potential as a next‐generation tribosurface and provides new insights for the design of multifunctional liquid surfaces for various practical applications.