Dynamic surface tension measurement with temporal resolution on microsecond scale

We introduce a method for measuring the time-dependent surface tension of liquid with a time resolution higher than 0.1 ms. The method involves inkjet technology with in-flight manipulation of droplets. Droplets are launched continuously and then deformed by a dielectric force. The resonance oscilla...

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Bibliographic Details
Published inApplied physics express Vol. 7; no. 7; pp. 77301 - 77304
Main Authors Ishiwata, Tomoki, Sakai, Keiji
Format Journal Article
LanguageEnglish
Published The Japan Society of Applied Physics 01.07.2014
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Summary:We introduce a method for measuring the time-dependent surface tension of liquid with a time resolution higher than 0.1 ms. The method involves inkjet technology with in-flight manipulation of droplets. Droplets are launched continuously and then deformed by a dielectric force. The resonance oscillation of droplets after deformation is observed, and eigenfrequencies for given droplet radii indicate the surface tension as a function of time after the formation of a liquid surface. We demonstrate experimental results for the cases of water and an aqueous solution containing surfactant material, in which constant and time-dependent surface tension are expected, respectively.
ISSN:1882-0778
1882-0786
DOI:10.7567/APEX.7.077301