Theory of microfluidics

Kirby, B.J. and Hasselbrink, E.F., Zeta potential of microfluidic substrates 1. Theory, experimental techniques, and effects on separations. Electrophoresis, 2004, 25 187-202. 

Some of the major applications of the EDL theory, in perspective of microfluidic research, are... 

In this article, the underlying concepts and theory of electroporation and also some of the most significant experimental studies on the microfluidic ceU electroporation will be reviewed. It wDl begin by providing the fundamentals and mathematical description of the cell electroporation. Here, the theory of membrane permeabilization and its simplified asymptotic solution will be reviewed. After that, the most... 

Recent years have seen rapid progress in application of the theory of mixing as well as in the innovative design of new microfluidic mixers. The design space available for innovation in this... 

Berthier J (2008) Theory of wetting, micro-drops and digital microfluidics. William Andrew Publishing, Norwich... 

Another fundamental concept in the theory of surface effects in microfluidics is the contact angle that appears at the contact line between three different phases, typically the solid wall of a channel and two immiscible fluids inside that channel. The two concepts, that is, contact angle and surface tension, allow understanding of the capillary forces that act on two-fluid flows inside microchannels of lab-on-a-chip (LCX)) systems. 

As we have seen, this work is directed toward a continuum theory of a mixture of liquid and noncondensible gas, wherein constituents are allowed the same bulk temperature and velocity fields. The theories and physical principles that we use are those of microfluids and continuum thermodynamics, viz ... 

Despite the fact that much effort has been made to model the DMFC system, considerable work remains, particularly in support of the emerging portable designs and systems. Few have treated the dominating effects of two-phase flow. No model to date has sufficient detail to provide a microfluidic theory for portable systems including effects of channel geometry and wettability characteristics of the GDL on fluid flow in the anode or cathode. Modeling studies are needed to fully elucidate the intricate couplings of methanol, water, and heat-transport... 

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