75th Annual Meeting of the APS Division of Fluid Dynamics (November 20, 2022 — November 22, 2022)

V0092: Dancing bubble navigated by a near-infrared laser

Authors

• Man Hu, Department of Aeronautics and Astronautics, Fudan University, Shanghai, 200433, China
• Feng Wang, Department of Aeronautics and Astronautics, Fudan University, Shanghai, 200433, China
• Daosheng Deng, Department of Aeronautics and Astronautics, Fudan University, Shanghai, 200433, China

DOI: https://doi.org/10.1103/APS.DFD.2022.GFM.V0092

    Precise manipulation of droplets or bubbles hosts a broad range of applications for microfluidic devices, drug delivery, and soft robotics. 

    Here, during the near-infrared laser impacting on water, by simply introducing a thermally conductive interface, we unexpectedly observe a spontaneously bouncing bubble with hundreds-of-micrometer diameter at tens-of-Hertz frequency.

    Furthermore, by controlling the translating velocity of the laser beam, the bubble exhibits distinctive behaviors from bouncing to dancing within water. We demonstrate the relevant applications by steering the bubble within water to specifically interact with tiny objects, such as bubble, droplet and particles.

    More detail analysis and discussions, please refer to our recent work in Nature Communications (2022) 13:5749.