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Microfluidics: Modeling, Mechanics and Mathematics by Bastian E. Rapp

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Chapter 9

Fluids

9.1 Introduction

Microfluidics involves the design and the application of technical systems which manipulate fluids at the microscale. As we will see, numerous effects can be exploited at this length scale that cannot (or hardly) be seen in fluidic systems at greater length scales. As an example, most microfluidic systems show strictly laminar flow behavior. This gives rise to numerous effects, e.g., filtering and laminar flow stacking, which are very difficult to obtain in systems at greater length scales.

Scaling Law. One important advantage of microfluidics is often referred to as the scaling law. If a system is decreased in size linearly in all dimensions, the volume of the system will shrink with the power of three. As ...

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