Nanometer-Resolved Collective Micromeniscus Oscillations through Optical Diffraction

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dc.creatorRathgen, Helmut
dc.creatorSugiyama, Kazuyasu
dc.creatorOhl, Claus-Dieter
dc.creatorLohse, Detlef
dc.creatorMugele, Frieder
dc.date2007-07-17
dc.date2007-12-04
dc.date.accessioned2026-07-07T08:46:37Z
dc.date.available2026-07-07T08:46:37Z
dc.descriptionWe study the dynamics of periodic arrays of micrometer-sized liquid-gas menisci formed at superhydrophobic surfaces immersed into water. By measuring the intensity of optical diffraction peaks in real time we are able to resolve nanometer scale oscillations of the menisci with sub-microsecond time resolution. Upon driving the system with an ultrasound field at variable frequency we observe a pronounced resonance at a few hundred kHz, depending on the exact geometry. Modeling the system using the unsteady Stokes equation, we find that this low resonance frequency is caused by a collective mode of the acoustically coupled oscillating menisci.
dc.description4 pages, 5 figures
dc.identifierhttps://arxiv.org/abs/0707.2464
dc.identifierhttp://arxiv.org/abs/0707.2464
dc.identifierPhys. Rev. Lett. 99, 214501 (2007)
dc.identifierdoi:10.1103/PhysRevLett.99.214501
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/143306
dc.subjectSoft Condensed Matter
dc.titleNanometer-Resolved Collective Micromeniscus Oscillations through Optical Diffraction
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