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Updated: May 31, 2026

Assembly and Characterization of an External Driver for the Generation of Sub-Kilohertz Oscillatory Flow in Microchannels
Published on: January 28, 2022
Transport by bi-harmonic drives: from harmonic to vibrational mixing
M Borromeo1, P Hänggi, F Marchesoni
1Dipartimento di Fisica, Università di Perugia, I-06123 Perugia, Italy. Istituto Nazionale di Fisica Nucleare, Sezione di Perugia, I-06123 Perugia, Italy.
Abstract:
Transport in a one-dimensional symmetric device can be activated by the combination of thermal noise and a bi-harmonic drive. The results of extensive simulations allow us to distinguish between two apparently different bi-harmonic regimes: (i) harmonic mixing, where the two drive frequencies are commensurate but not too high; (ii) vibrational mixing, where one harmonic drive component possesses a high frequency but finite amplitude-to-frequency ratio. A comparison with the earlier theoretical predictions shows that at present the analytical understanding of nonlinear frequency mixing is still not satisfactory.
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