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Related Experiment Video

Updated: Jun 14, 2026

Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators

Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators

Published on: April 4, 2016

Self-ratcheting Stokes drops driven by oblique vibrations.

Karin John¹, Uwe Thiele

¹Laboratoire de Spectrométrie Physique UMR 5588, Université Joseph Fourier-Grenoble I, BP 87-38402 Saint-Martin-d'Hères, France. kjohn@spectro.ujf-grenoble.fr

Physical Review Letters

|April 7, 2010

Summary

A minimal hydrodynamic model explains how drops climb vibrated inclines. Orthogonal vibrations cause nonlinear shape changes, leading to motion and flow reversal at high frequencies.

Related Experiment Videos

Last Updated: Jun 14, 2026

Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators

Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators

Published on: April 4, 2016

Area of Science:

Fluid dynamics
Nonlinear dynamics
Surface science

Background:

Understanding droplet motion on surfaces is crucial in various scientific and industrial applications.
Harmonic vibration of inclines can induce complex droplet behaviors, including climbing motion.

Purpose of the Study:

To develop and analyze a minimal hydrodynamic model explaining why drops climb harmonically vibrated inclines.
To elucidate the fundamental physical mechanisms driving this phenomenon.

Main Methods:

Development of a minimal hydrodynamic model.
Analysis of the nonlinear (anharmonic) response of droplet shape to orthogonal vibrations.
Investigation of the asymmetric response to parallel vibrations.

Main Results:

The orthogonal vibration component induces a nonlinear droplet shape response.
This asymmetry drives the net motion of the drop up the incline.
Identified scaling laws across a broad frequency range.
Observed flow reversal at high frequencies.

Conclusions:

The study establishes the basic mechanism for droplet climbing on vibrated inclines.
The findings provide insights into droplet dynamics under external forcing.
The identified scaling laws and flow reversal offer predictive capabilities for such systems.