Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/135887
Title: Pinning and Avalanches in Hydrophobic Microchannels
Author: Queralt Martín, María
Pradas Gené, Marc
Rodriguez Trujillo, Romen
Arundell, M.
Corvera Poiré, E.
Hernández Machado, Aurora
Keywords: Física de partícules
Experiments
Particle physics
Experiments
Issue Date: 10-May-2011
Publisher: American Physical Society
Abstract: Rare events appear in a wide variety of phenomena such as rainfall, floods, earthquakes, and risk. We demonstrate that the stochastic behavior induced by the natural roughening present in standard microchannels is so important that the dynamics for the advancement of a water front displacing air has plenty of rare events. We observe that for low pressure differences the hydrophobic interactions of the water front with the walls of the microchannel put the front close to the pinning point. This causes a burstlike dynamics, characterized by series of pinning and avalanches, that leads to an extreme-value Gumbel distribution for the velocity fluctuations and a nonclassical time exponent for the advancement of the mean front position as low as 0.38.
Note: Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.106.194501
It is part of: Physical Review Letters, 2011, vol. 106, num. 19, p. 194501
URI: http://hdl.handle.net/2445/135887
Related resource: https://doi.org/10.1103/PhysRevLett.106.194501
ISSN: 0031-9007
Appears in Collections:Articles publicats en revistes (Electrònica)
Articles publicats en revistes (Física de la Matèria Condensada)

Files in This Item:
File Description SizeFormat 
600465.pdf1.93 MBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.