本文制备了具有微-纳二级结构的超疏水表面,并在湿空气自然对流条件下进行了水平表面冷凝实验。实验结果表明,冷凝液滴行为可分为液滴合并、液滴弹跳和液滴扫掠三类。其中液滴弹跳与液滴扫掠行为均是由液滴合并触发的自推进液滴行为。液滴扫掠与液滴弹跳的区别是,目标液滴未能跳离表面,而是沿表面运动,并吞并沿途的液滴,留下狭长的运动轨迹,且轨迹尽头停留一个大液滴。本文亦通过统计方法,获得了超疏水表面上冷凝液滴的粒径分布、平均直径、表面覆盖率等,研究了液滴种群和单个液滴的生长机制。 In this paper, the superhydrophobic surface with micro-nano secondary structure was prepared and the horizontal surface condensation experiments were conducted under natural convection of wet air. The experimental results show that the condensate droplet behavior can be divided into three categories: droplet merge, droplet bounce and droplet sweep. The droplet bounce and droplet sweeping behavior are self-propelled droplet behaviors triggered by the droplet combination. The difference between drop sweeping and drop bouncing is that the target droplet does not jump off the surface, but rather moves along the surface and swallows the droplet along the way, leaving a long, narrow trajectory with a large droplet at the end of the trace. In this paper, the particle size distribution, average diameter and surface coverage of condensed droplets on superhydrophobic surface were also obtained by statistical methods. The growth mechanism of droplet population and single droplets were studied.