Mechanical stability of ordered droplet packings in microfluidic channels

Jean-Baptiste Fleury; Ohle Claussen; Stephan Herminghaus; Martin Brinkmann; Ralf Seemann

doi:10.1063/1.3665185

Mechanical stability of ordered droplet packings in microfluidic channels

Jean-Baptiste Fleury, Ohle Claussen, Stephan Herminghaus, Martin Brinkmann, Ralf Seemann

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Abstract

The mechanical response and stability of one and two-row packing of monodisperse emulsion droplets are studied in quasi 2d microchannels under longitudinal compression. Depending on the choice of parameter, a considered droplet arrangement is either transformed continuously into another packing under longitudinal compression or becomes mechanically unstable and segregates into domains of higher and lower packing fraction. Our experimental results are compared to analytical calculations for 2d-droplet arrangements with good quantitative agreement. This study also predicts important consequences for the stability of droplet arrangements in flowing systems.

Original language	English
Article number	244104
Journal	Applied Physics Letters
Volume	99
Issue number	24
DOIs	https://doi.org/10.1063/1.3665185
Publication status	Published - 12 Dec 2011
Externally published	Yes

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title = "Mechanical stability of ordered droplet packings in microfluidic channels",

abstract = "The mechanical response and stability of one and two-row packing of monodisperse emulsion droplets are studied in quasi 2d microchannels under longitudinal compression. Depending on the choice of parameter, a considered droplet arrangement is either transformed continuously into another packing under longitudinal compression or becomes mechanically unstable and segregates into domains of higher and lower packing fraction. Our experimental results are compared to analytical calculations for 2d-droplet arrangements with good quantitative agreement. This study also predicts important consequences for the stability of droplet arrangements in flowing systems.",

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AU - Fleury, Jean-Baptiste

AU - Claussen, Ohle

AU - Herminghaus, Stephan

AU - Brinkmann, Martin

AU - Seemann, Ralf

PY - 2011/12/12

Y1 - 2011/12/12

N2 - The mechanical response and stability of one and two-row packing of monodisperse emulsion droplets are studied in quasi 2d microchannels under longitudinal compression. Depending on the choice of parameter, a considered droplet arrangement is either transformed continuously into another packing under longitudinal compression or becomes mechanically unstable and segregates into domains of higher and lower packing fraction. Our experimental results are compared to analytical calculations for 2d-droplet arrangements with good quantitative agreement. This study also predicts important consequences for the stability of droplet arrangements in flowing systems.

AB - The mechanical response and stability of one and two-row packing of monodisperse emulsion droplets are studied in quasi 2d microchannels under longitudinal compression. Depending on the choice of parameter, a considered droplet arrangement is either transformed continuously into another packing under longitudinal compression or becomes mechanically unstable and segregates into domains of higher and lower packing fraction. Our experimental results are compared to analytical calculations for 2d-droplet arrangements with good quantitative agreement. This study also predicts important consequences for the stability of droplet arrangements in flowing systems.

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DO - 10.1063/1.3665185

M3 - Article

SN - 0003-6951

VL - 99

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 24

M1 - 244104

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Mechanical stability of ordered droplet packings in microfluidic channels

Abstract

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