Issue 18, 2012

A novel deep reactive ion etched (DRIE) glass micro-model for two-phase flow experiments

Abstract

In the last few decades, micro-models have become popular experimental tools for two-phase flow studies. In this work, the design and fabrication of an innovative, elongated, glass-etched micro-model with dimensions of 5 × 35 mm2 and constant depth of 43 microns is described. This is the first time that a micro-model with such depth and dimensions has been etched in glass by using a dry etching technique. The micro-model was visualized by a novel setup that allowed us to monitor and record the distribution of fluids throughout the length of the micro-model continuously. Quasi-static drainage experiments were conducted in order to obtain equilibrium data points that relate capillary pressure to phase saturation. By measuring the flow rate of water through the flow network for known pressure gradients, the intrinsic permeability of the micro-model's flow network was also calculated. The experimental results were used to calibrate a pore-network model and test its validity. Finally, we show that glass-etched micro-models can be valuable tools in single and/or multi-phase flow studies and their applications.

Graphical abstract: A novel deep reactive ion etched (DRIE) glass micro-model for two-phase flow experiments

Article information

Article type
Paper
Submitted
08 May 2012
Accepted
07 Jun 2012
First published
13 Jun 2012

Lab Chip, 2012,12, 3413-3418

A novel deep reactive ion etched (DRIE) glass micro-model for two-phase flow experiments

N. K. Karadimitriou, V. Joekar-Niasar, S. M. Hassanizadeh, P. J. Kleingeld and L. J. Pyrak-Nolte, Lab Chip, 2012, 12, 3413 DOI: 10.1039/C2LC40530J

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