Self-Propelled Motion of Monodisperse Underwater Oil Droplets Formed by a Microfluidic Device

Naoko Ueno, Taisuke Banno, Arisa Asami, Yuki Kazayama, Yuya Morimoto, Toshihisa Osaki, Shoji Takeuchi, Hiroyuki Kitahata, Taro Toyota

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

We evaluated the speed profile of self-propelled underwater oil droplets comprising a hydrophobic aldehyde derivative in terms of their diameter and the surrounding surfactant concentration using a microfluidic device. We found that the speed of the oil droplets is dependent on not only the surfactant concentration but also the droplet size in a certain range of the surfactant concentration. This tendency is interpreted in terms of combination of the oil and surfactant affording spontaneous emulsification in addition to the Marangoni effect.

Original languageEnglish
Pages (from-to)5393-5397
Number of pages5
JournalLangmuir
Volume33
Issue number22
DOIs
Publication statusPublished - 2017 Jun 6

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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