用于壁面微气泡约束成型重构的柔性多级结构制造及操控

瞄准海洋发展战略对水下新型智能结构制造和操控的迫切需求，本项目创新性地提出了一种用于水下高压环境中柔性多级结构操控的壁面气泡约束成型策略，即利用柔性微纳米结构亲疏水相间的固体壁面形成连续稳定的气膜，在拉普拉斯压力梯度和表面能梯度的作用下，实现可重构的壁面微气泡约束成型控制。该方法突破了气泡润湿稳定性受制于水下复杂恶劣应用环境的困扰，实现液相高静水压力和强液流剪切作用下微气泡的定向连续稳定输送。本项目旨在探究柔性多级结构空间形态对壁面微气泡约束成型机理，研究柔性微纳米多级结构的外场操控分步模塑成型方法；通过壁面气膜的多参量（气液界面分数、气膜层厚度、定向气泡输运）综合调制，解决微气泡溢出与连续稳定输运的矛盾，为水下高压环境下气-液-固的界面行为调控提供一种柔性微纳米多级结构的制造及操控方法，支持我国海洋工程的快速发展。

Aiming at the urgent demand of the marine development strategy for new underwater intelligent structures and manufacturing, this project innovatively proposes a wall-bubble-constrained-forming strategy by manipulating reconfigurable flexible multi-level structures in an underwater high-pressure environment. Specially, a continuous and stable gas film will be constructed on the hydrophilic-hydrophobic interphase solid wall of reconfigurable flexible micro-nano structures. With Laplace pressure gradient and surface energy gradient, multi-parameter control of the gas film will be realized. This method breaks through the limitation of the complex and harsh underwater environment to the wetting stability of bubbles, and realizes the continuous, directional and stable delivery of micro-bubbles under conditions of high hydrostatic pressure and the strong liquid-flow shear force. This project aims to investigate the comprehensive manipulation mechanism of the spatial shape of the reconfigurable flexible multi-level structure towards the multi-parameters of the gas film, study the step-by-step molding method of reconfigurable flexible micro-nano multi-level structures in external fields, establish continuous and stable gas transportation, and solves the contradiction between bubble overflow and continuous transportation. Eventually, for manipulating the gas-liquid-solid interface behavior in underwater high-pressure environment, this project will provide a novel manufacturing and control method of flexible multi-level structures, which will promote the rapid development of Chinese marine engineering.