Design and fabrication of thermocapillary micro bubble pump

Tzong Shyng Leu, Yan Hao Liu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

In this paper, a novel MEMS-fabricated thermal bubble pump is proposed. By using thermocapillary effect in a microchannel loop, bubbles are designed to move only in one direction of the loop. Driving heater with a square-wave signal, bubble nucleates and grows asymmetrically above the heater. As soon as the heating pulse is turned off, an interesting phenomenon is found. Instead of bubble collapse, bubble moves toward growing direction. Continuous bubbles grow and move periodically when square-wave pulsing signals are applied. Thermocapillary pumping phenomena are achieved successfully in the experiments. By adjusting background temperature field, thermocapillary pumping phenomena can be sustained. Detailed mechanism for pumping force will be discussed in this paper.

Original languageEnglish
Title of host publicationFrontier of Nanoscience and Technology II
PublisherTrans Tech Publications Ltd
Pages23-26
Number of pages4
ISBN (Print)9783037854297
DOIs
Publication statusPublished - 2012 Jan 1
Event2012 International Conference on Frontier of Nanoscience and Technology, ICFNST 2012 - Hong Kong, Hong Kong
Duration: 2012 Jul 262012 Jul 27

Publication series

NameAdvanced Materials Research
Volume528
ISSN (Print)1022-6680

Other

Other2012 International Conference on Frontier of Nanoscience and Technology, ICFNST 2012
Country/TerritoryHong Kong
CityHong Kong
Period12-07-2612-07-27

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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