The European Physical Journal Special Topics

, Volume 226, Issue 6, pp 1199–1205

Photochemical migration of liquid column in a glass tube

  • M. Muto
  • Y. Ayako
  • K. Yamamoto
  • M. Yamamoto
  • Y. Kondo
  • M. Motosuke
Regular Article

DOI: 10.1140/epjst/e2016-60217-y

Cite this article as:
Muto, M., Ayako, Y., Yamamoto, K. et al. Eur. Phys. J. Spec. Top. (2017) 226: 1199. doi:10.1140/epjst/e2016-60217-y
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Part of the following topical collections:
  1. IMA8 - Interfacial Fluid Dynamics and Processes

Abstract

A light-induced migration of liquid columns in a 2.5-mm glass capillary by photochemical isomerization was demonstrated. The isomerization of a surfactant AZTMA, which was added into ultrapure water, occurred by irradiating UV or visible light and results in the surface tension of the liquid. By utilizing this effect, the column manipulation was performed by irradiating the UV light to a half portion of the liquid column so that liquid-gas interface at two column ends had different surface tension dye to the photochemical isomerization. As a result, the migration of the columns generated by a difference in the Laplace pressure at two ends was observed. The columns firstly advanced at constant speeds depending on their lengths and then decelerated by mixing of isomers in the columns. Moreover, it was found that shorter the column length, higher the mobility. This characteristic was explained by the viscous friction, which counteracted the driving force, and the Marangoni convection in the vicinity of the interface.

Copyright information

© EDP Sciences and Springer 2017

Authors and Affiliations

  • M. Muto
    • 1
  • Y. Ayako
    • 2
  • K. Yamamoto
    • 1
  • M. Yamamoto
    • 1
  • Y. Kondo
    • 2
  • M. Motosuke
    • 1
  1. 1.Department of Mechanical EngineeringTokyo University of ScienceTokyoJapan
  2. 2.Department of Industrial ChemistryTokyo University of ScienceTokyoJapan

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