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Keywords:

  • interfaces;
  • nanobubbles;
  • nanostructures;
  • scanning probe microscopy;
  • solvent exchange

Abstract

In a recently introduced method for nanobubble generation, water is replaced with NaCl solution. It has the same mechanism as alcohol/water exchange: a liquid of higher gas solubility is used to replace one of lower gas solubility. Herein, the opposite process is realized by replacement of saline solutions with water. Interestingly, nanobubbles are also observed by AFM when different concentrations and valences of saline liquids are employed.