Generation of Nanobubbles Using Alumina Nanopores and Bubble Coalescence

DOI Web Site 13 References
  • MA Teng
    Advanced Institute for Materials Research, Tohoku University
  • TADAKI Daisuke
    Research Institute of Electrical Communication, Tohoku University
  • KIMURA Yasuo
    Tokyo University of Technology
  • HIRANO-IWATA Ayumi
    Advanced Institute for Materials Research, Tohoku University Research Institute of Electrical Communication, Tohoku University
  • NIWANO Michio
    Research Institute of Electrical Communication, Tohoku University

Bibliographic Information

Other Title
  • アルミナ微細孔によるナノバブル生成とバブル合体

Abstract

<p>Nanobubbles (NBs), with their unique physicochemical properties and promising applications, have become an important research topic. Generation of monodispersed bulk NBs with specified gas content remains a challenge. We developed a simple method for generating bulk NBs, using porous alumina films with ordered straight nano-scaled holes. Nanoparticle tracking analysis (NTA) is used to confirm NB formation. The NTA data demonstrates that NB size is distributed discretely with a uniform increment factor of √2. To explain the observed characteristic size distribution of NBs, we propose a simple model in which two NBs of the same size are assumed to preferentially coalesce.</p>

Journal

  • Vacuum and Surface Science

    Vacuum and Surface Science 66 (11), 639-644, 2023-11-10

    The Japan Society of Vacuum and Surface Science

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