Unidirectional movement behavior of underwater bubbles on the wettability gradient mesh via asymmetrical bounce  

作　　者：Yuzhen Ning Zhihong Zhao Shuang Ben Qiang Li Cunming Yu Xudong Zhang Huawei Chen Kesong Liu Lei Jiang 

机构地区：[1]School of Mechanical Engineering and Automation,Beihang University,Beijing 100191,China [2]Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology,School of Chemistry,Beihang University,Beijing 100191,China [3]Research Institute of Aero-Engine,Beihang University,Beijing 100191,China [4]School of Materials Science and Engineering,Shenyang Ligong University,Shenyang 110159,China [5]Tianmushan Laboratory,Hangzhou 310023,China [6]The Analysis,Testing Center,Beihang University,Beijing 100191,China

出　　处：《Science China Chemistry》2024年第8期2606-2613,共8页中国科学（化学英文版）

基　　金：supported by the China Postdoctoral Science Foundation (2021TQ0023, 2022TQ0022, 2022M720012);the National Natural Science Foundation of China (52303143, 22005015,22105014);the National Key R&D Program of China (2019YFB1309702);Beijing Young Talent Support Program;Tianmushan Laboratory Research Project (TK2023C018);Beijing Nova Program (20220484213);the 111Project;the Fundamental Research Funds for the Central Universities。

摘　　要：The impact of underwater bubbles on solid surfaces with a gradient wettability is important for fundamental science and technological applications. Despite progress in the translational motion of underwater bubbles on asymmetric surface, a fundamental dynamic understanding of asymmetrical bounce behavior of the underwater bubble needs to be further improved.Herein, we investigate asymmetrical bounce of underwater bubbles after impacting the wettability gradient copper mesh surface.Asymmetrical bounce of the underwater bubble on the wettability gradient mesh(WGM) surface is composed by asymmetrical spread in the spread process and asymmetrical recoil in the recoil process, which induce the unidirectional movement behavior.Additionally, effective bubble-size manipulation can be easily implemented due to different volumes of bubbles remaining at different locations of WGM surface. We envision that this work will provide a new understanding of asymmetrical bounce behavior of the underwater bubble on the wettability gradient surface, and propose a novel and feasible strategy for constructing the underwater bubble manipulation system.

关 键 词：asymmetrical bounce unidirectional movement behavior gradient wettability 

分 类 号：TQ02[化学工程]