Complete liquid filling in closed-end microchannels for interdigital transducers (IDTs)-Theoretical model and experimental observations

Wei Guo, Heng Dong Xi, Say Hwa Tan

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We demonstrate the complete filling of both deionized water (DI water) and liquid metal (EGaIn) into closed-end interdigital microchannels driven by a constant pressure at the inlet. A mathematical model is developed to unveil the physical mechanism in the filling process. The proposed theoretical analysis based on our model agrees well with the experimental observations. We also successfully generate traveling surface acoustic waves by actuating interdigital channels filled with EGaIn. Our work will bring significant insights in the fabrication of liquid electrodes for various microfluidic lab-on-a-chip applications.

Original languageEnglish
Title of host publication21st International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2017
PublisherChemical and Biological Microsystems Society
Pages1545-1546
Number of pages2
ISBN (Electronic)9780692941836
StatePublished - 2020
Event21st International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2017 - Savannah, United States
Duration: 22 Oct 201726 Oct 2017

Publication series

Name21st International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2017

Conference

Conference21st International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2017
Country/TerritoryUnited States
CitySavannah
Period22/10/1726/10/17

Keywords

  • Complete filling
  • Interdigital microchannels
  • Liquid metal
  • Surface acoustic waves

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