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 language | English |
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Article number | 131604 |
Journal | Applied Physics Letters |
Volume | 110 |
Issue number | 13 |
DOIs | |
State | Published - 27 Mar 2017 |