液体弹珠及其研究进展

Progress in Liquid Marbles

润湿性是固体表面的重要性质之一,主要由表面的化学组成和微观几何结构共同决定。不粘连表面是指具有特殊的表面形貌及性能,使得诸如尘土、水、冰以及污染物较难黏附的特殊表面。液体弹珠是被高疏水性颗粒包裹形成的不润湿的液滴,可以稳定地静置于固体及液体表面。本文介绍了液体弹珠的结构和制备方法,综述了液体弹珠的静态力学性能及其在磁场电场下的响应性能,探讨了这种新型不粘连体系用于移动和控制微量液滴的独特优势,展望了其发展趋势以及应用前景。

Wettability is an important property of a solid surface and is governed by both the chemical composition and the geometric structure. Non-sticky surface is a kind of surface with specific topographic structure and properties, being non-adhesive towards dirt, water, ice and other contaminants. Liquid marbles are non- wetting liquid droplets enclosed by highly hydrophobic powder, and can stably sit on the surface of a solid or a liquid. In this review, the methods to prepare liquid marbles and their structures are introduced, then static mechanical properties and responsive abilities of liquid marbles to electric and magnetic fields are briefly summarized. The advantages of controllable manipulation and transportation of small liquid droplets are also discussed. Future research interests and the application prospects of liquid marbles are proposed.