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http://hdl.handle.net/2445/104353
Title: | Capillary filling at the microscale: control of fluid front using geometry |
Author: | Trejo Soto, Claudia Andrea Costa Miracle, E. Rodríguez-Villarreal, Ivón Cid Vidal, Joan Alarcón Cor, Tomás Hernández Machado, Aurora |
Keywords: | Viscositat Glicols Fluids Plasma sanguini Viscosity Glycols Fluids Blood plasma |
Issue Date: | 22-Apr-2016 |
Publisher: | Public Library of Science (PLoS) |
Abstract: | We propose an experimental and theoretical framework for the study of capillary filling at the micro-scale. Our methodology enables us to control the fluid flow regime so that we can characterise properties of Newtonian fluids such as their viscosity. In particular, we study a viscous, non-inertial, non-Washburn regime in which the position of the fluid front increases linearly with time for the whole duration of the experiment. The operating shear-rate range of our apparatus extends over nearly two orders of magnitude. Further, we analyse the advancement of a fluid front within a microcapillary in a system of two immiscible Newtonian liquids. We observe a non-Washburn regime in which the front can accelerate or decelerate depending on the viscosity contrast between the two liquids. We then propose a theoretical model which enables us to study and explain both non-Washburn regimes. Furthermore, our theoretical model allows us to put forward ways to control the emergence of these regimes by means of geometrical parameters of the experimental set-up. Our methodology allows us to design and calibrate a micro-viscosimetre which works at constant pressure. |
Note: | Reproducció del document publicat a: https://doi.org/10.1371/journal.pone.0153559 |
It is part of: | PLoS One, 2016, vol. 11, num. 4, p. e0153559 |
URI: | http://hdl.handle.net/2445/104353 |
Related resource: | https://doi.org/10.1371/journal.pone.0153559 |
ISSN: | 1932-6203 |
Appears in Collections: | Articles publicats en revistes (Física de la Matèria Condensada) |
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