School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin, 300072, P. R. China.
Department of Dermatology, The First Medical Center of Chinese PLA General Hospital, Beijing, 100853, P. R. China.
Small. 2021 Feb;17(8):e2007803. doi: 10.1002/smll.202007803. Epub 2021 Jan 31.
Lubricant-infused slippery surface exhibits a series of superior properties such as pressure tolerance, self-healing, oil-repellence, etc. Especially when being applied in an aqueous environment, the reliable bubble manipulating ability of slippery surface offers great opportunities to develop advanced systems in the field of gas transport, water splitting, etc. To improve the strength and the functionality of slippery surfaces, a sliced lubricant-infused slippery (SLIS) track is presented here, possessing both flexibility and toughness for underwater bubble manipulation. The rigid slippery slices with hydrophobic porous structure are linked by the liquid bridge of silicone oil, resulting in a continuous lubricant layer for bubble transfer. Taking advantage of this unique assembled structure, the in situ bubble controlling process, that is, pinning and moving, is achieved via the stretching/releasing of an elastic SLIS track. Besides, on the basis of the integrated design, a hypothesis of underwater gas mining is proved in the all-in-one process including the micro-bubble generation, bubble collection, and gas transport. The current design paves an avenue to reinforce the structure of slippery surfaces, and should promote the function of underwater bubble manipulation toward real-world applications.
润滑浸渍的光滑表面具有一系列优异的性能，如耐压力、自修复、疏油性等。特别是在水相环境中，光滑表面可靠的气泡操控能力为气体传输、水分解等领域的先进系统的发展提供了很大的机会。为了提高光滑表面的强度和功能，本文提出了一种切片润滑浸渍的光滑（SLIS）轨道，具有水下气泡操控的柔韧性和韧性。具有疏水性多孔结构的刚性光滑片通过硅油的液桥连接，形成用于气泡传递的连续润滑层。利用这种独特的组装结构，通过弹性 SLIS 轨道的拉伸/释放来实现原位气泡控制过程，即固定和移动。此外，基于整体设计，在微气泡生成、气泡收集和气体传输的一体化过程中，证明了水下气体开采的假设。该设计为增强光滑表面的结构开辟了道路，并应促进水下气泡操控功能向实际应用的发展。
