Direct measurement of force exerted during single microbubble generation

Shinji Deguchi, Satoshi Takahashi, Hidenori Hiraki, Syuhei Tanimura

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

While there has been progress in the understanding of microbubble mechanics, the force associated with their formation has not previously been measured. Here we directly measure the force exerted during microbubble generation. We illuminate a carbon microfiber immersed in distilled water by using an infrared laser to produce individual bubbles. The fiber is elastically deformable and acts as a force sensor. A force of several nano-Newtons was detected on generation of each bubble. We show that water vaporization is responsible for the primary formation of the bubbles, and their subsequent expansion is caused by the diffusion of dissolved gases.

Original languageEnglish
Article number084101
JournalApplied Physics Letters
Volume102
Issue number8
DOIs
Publication statusPublished - Feb 25 2013

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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