Hydrophilic Domains Enhance Nanobubble Stability

Takashi Nishiyama, Koji Takahashi, Tatsuya Ikuta, Yutaka Yamada, Yasuyuki Takata

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Highly stable nanoscale gas states at solid/liquid interfaces, referred to as nanobubbles, have been widely studied for over a decade. In this study, nanobubbles generated on a hydrophobic Teflon amorphous fluoroplastic thin film in the presence and absence of hydrophilic carbon domains are investigated by peak force quantitative nanomechanics. On the hydrophobic surface without hydrophilic domains, a small number of nanobubbles are generated and then rapidly decrease in size. On the hydrophobic surface with hydrophilic domains, the hydrophilic domains have a significant effect on the generation and stability of nanobubbles, with bubbles remaining on the surface for up to three days. Bigger, better bubbles: The enhancement of nanobubble generation and stability by the existence of hydrophilic domains on a surface is shown (see picture). Close to the Ti/Si boundary, many nanobubbles are generated on the relatively hydrophobic Si surface. The hydrophilic-hydrophobic combination is one of the key factors for nanobubble generation and stabilization.

Original languageEnglish
Pages (from-to)1500-1504
Number of pages5
JournalChemPhysChem
Volume17
Issue number10
DOIs
Publication statusPublished - May 18 2016
Externally publishedYes

Keywords

  • atomic force microscopy
  • hydrophilic domains
  • hydrophobic surfaces
  • nanobubbles
  • solid/liquid interfaces

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Atomic and Molecular Physics, and Optics

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  • Cite this

    Nishiyama, T., Takahashi, K., Ikuta, T., Yamada, Y., & Takata, Y. (2016). Hydrophilic Domains Enhance Nanobubble Stability. ChemPhysChem, 17(10), 1500-1504. https://doi.org/10.1002/cphc.201501181