Li Weibin, Zhang Chen, Wang Yuren
National Microgravity Laboratory, Institute of Mechanics, Chinese Academy of Sciences, 100190 Beijing, China; School of Engineering Science, University of Chinese Academy of Sciences, 100049 Beijing, China.
National Microgravity Laboratory, Institute of Mechanics, Chinese Academy of Sciences, 100190 Beijing, China; School of Engineering Science, University of Chinese Academy of Sciences, 100049 Beijing, China.
Adv Colloid Interface Sci. 2024 Nov;333:103286. doi: 10.1016/j.cis.2024.103286. Epub 2024 Aug 27.
Colloidal droplet evaporation is an intriguing and intricate phenomenon that has captured the interest of scientists across diverse disciplines, including physical chemistry, fluid dynamics, and soft matter science, over the past two decades. Despite being a non-equilibrium system with inherent challenges posed by coffee ring formation and Marangoni effects, which hinder the precise control of deposition patterns, evaporative self-assembly presents a convenient and cost-effective approach for generating arrays of well-ordered structures and functional patterns with wide-ranging applications in inkjet printing, photonic crystals, and biochemical assays. In the realm of printed electronics and photonics, effectively mitigating coffee rings while achieving uniformity and orderliness has emerged as a critical factor in realising the next generation of large-area, low-cost, flexible devices that are exceptionally sensitive and high-performance. This review highlights the evaporative self-assembly process in colloidal droplets with a focus on the intricate mechanical environment, self-assembly at diverse interfaces, and potential applications of these assembling ordered structures.
在过去二十年中，胶体液滴蒸发是一种引人入胜且错综复杂的现象，吸引了包括物理化学、流体动力学和软物质科学等不同学科的科学家的关注。尽管它是一个非平衡系统，存在咖啡环形成和马兰戈尼效应带来的固有挑战，这些挑战阻碍了对沉积图案的精确控制，但蒸发自组装为生成有序结构阵列和功能图案提供了一种便捷且经济高效的方法，在喷墨打印、光子晶体和生化分析等领域有广泛应用。在印刷电子学和光子学领域，有效减轻咖啡环现象同时实现均匀性和有序性，已成为实现下一代大面积、低成本、高灵敏度和高性能的柔性器件的关键因素。本综述重点介绍了胶体液滴中的蒸发自组装过程，关注其复杂的力学环境、在不同界面的自组装以及这些组装有序结构的潜在应用。
