"Bottleneck effect" in two-dimensional microfluidics.
An anomalously long transient is needed to achieve a steady pressurization of a fluid when forced to flow through micronarrowed channels under constant mechanical driving. This phenomenon, known as the "bottleneck effect" is here revisited from a different perspective, by using confined displacements of interfacial fluids. Compared to standard microfluidics, such effect admits in this case a neat quantitative characterization, which reveals intrinsic material characteristics of flowing monolayers and permits to envisage strategies for their controlled micromanipulation.
Burriel
Patricia
P
SOC and SAM Group, Departament de Química Física and Institut de Nanociència i Nanotecnologia de la UB (IN2 UB), Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain.
Claret
Josep
J
Ignés-Mullol
Jordi
J
Sagués
Francesc
F
D004548:Elasticity; D046210:Microfluidic Analytical Techniques / Q000379:methods*; D008956:Models, Chemical; D019301:Oleic Acid / Q000737:chemistry; D009829:Oleic Acids; D014783:Viscosity
D009829:Oleic Acids; D019301:Oleic Acid; C011459:elaidic acid