Self-propelling rotator driven by soluto-capillary marangoni flows

Mark Frenkel, Gene Whyman, Evgeny Shulzinger, Anton Starostin, Edward Bormashenko

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19 Scopus citations

Abstract

The self-propelled, longstanding rotation of the polymer tubing containing camphor continuing for dozens of hours is reported. The rotator is driven by the solutocapillary Marangoni flows owing to the dissolution of camphor. The phenomenological model of self-propulsion is suggested and verified. Scaling laws describing the quasi-stationary self-propulsion are proposed and tested experimentally. The change in the surface tension, arising from the dissolution of camphor and driving the rotator, is estimated as 0.3 mN/m.

Original languageEnglish
Article number131604
JournalApplied Physics Letters
Volume110
Issue number13
DOIs
StatePublished - 27 Mar 2017

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