Diffusion coefficient measurement based on diffusion-induced focusing in optofluidic waveguide

H. T. Zhao, Y. Yang, L. K. Chin, A. Q. Liu

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

1 Citation (Scopus)

Abstract

This paper presents a new optofluidic method to measure the mutual diffusion coefficient in binary solutions by directly analyzing the diffusion-induced focusing pattern based on a single optical micrograph. The average diffusion coefficient of ethylene glycol (EG) and deionized water binary solution is measured under different mass fractions and flow rates to demonstrate the proposed method. Experimental results show good agreement with the reported data and indicate that the mutual diffusion coefficient is slightly decreased with the increase of the flow rate and is inversely proportional to the mass fraction of EG.

Original languageEnglish
Title of host publication17th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2013
PublisherChemical and Biological Microsystems Society
Pages1532-1534
Number of pages3
ISBN (Print)9781632666246
Publication statusPublished - Oct 2013
Externally publishedYes
Event17th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2013 - Freiburg, Germany
Duration: 27 Oct 201331 Oct 2013

Publication series

Name17th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2013
Volume3

Conference

Conference17th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2013
Country/TerritoryGermany
CityFreiburg
Period27/10/1331/10/13

Keywords

  • Diffusion coefficient
  • Diffusion-induced focusing
  • Optofluidic waveguide
  • Single optical micrograph

ASJC Scopus subject areas

  • Bioengineering

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