Self-ratcheting Stokes drops driven by oblique vibrations.
作者： Karin John , Uwe Thiele
DOI: 10.1103/PHYSREVLETT.104.107801
关键词: Drop (liquid) 、 Anharmonicity 、 Transport phenomena 、 Mechanics 、 Spinning drop method 、 Physics 、 Classical mechanics 、 Oblique case 、 Nonlinear system 、 Vibration 、 Homogeneous
摘要: We develop and analyze a minimal hydrodynamic model to understand why drop climbs smooth homogeneous incline that is harmonically vibrated at an angle different from the substrate normal [P. Brunet, J. Eggers, R. D. Deegan, Phys. Rev. Lett. 99, 144501 (2007)]. find vibration component orthogonal induces nonlinear (anharmonic) response in shape. This results asymmetric of parallel and, as consequence, observed net motion. In addition establishing basic mechanism, we identify scaling laws valid broad frequency range flow reversal high frequencies.
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