微气泡操控及其在功能材料图案化中的应用

Micro-bubble manipulation and its application in functional material patterning

气泡是气体于液体中分散形成的两相体系,对于气泡的精准操控可以实现材料、医疗、化工等领域的诸多应用.不同于传统研究中依据尺寸的气泡划分方式,我们按照气泡所处空间的自由度将其划分为自由气泡与受限气泡.受限空间的引入降低了体系的运动维度,使气泡具有更高的可控性.本文以受限空间内的气泡操控与应用为重点,介绍了相关的气泡成核、静态结构、动态演化、稳定性等基础问题与理论,并对自由气泡、二维受限气泡阵列、三维受限气泡阵列等多维度的气泡操控与应用前景进行了总结,特别关注了受限空间中的二维气泡阵列作为一种新型模板在印刷功能材料图案领域的相关研究,并展望了受限气泡在微纳米乃至分子尺度图案化、功能器件制备和纳米尺度气泡操控的研究拓展.

Bubble is a two-phase system formed by gas dispersing in liquid. Accurate control of bubbles has many applications in material, medical, chemical and other fields. Different from the traditional method of classifying bubbles according to size, we classify bubbles into free bubbles and confined bubbles according to the freedom of the space in which they live. The introduction of confined space reduces the freedom of motion and makes bubbles more controllable. This paper focuses on the control and application of bubbles in confined space, introduces basic theories related to nucleation, structure, evolution and stability, and summarizes the multi-dimensional bubble control and application, including free bubble, two-dimensional bubble array, three-dimensional bubble array. The research of twodimensional bubble array in confined space as a new template to fabricate functional material pattern is particularly focused, and the applications of confined bubbles in micro-/nano-scale and even molecular patterning, functional device fabrication and nano-scale bubble manipulation are outlooked.