Key Features

• Authoritative reporting on the latest changes in microfluidic science, where microscopic liquid volumes are handled as ""microdrops"" and separately from ""nanodrops.""

• A methodical examination of how liquid microdrops behave in the complex geometries of modern miniaturized systems and interact with different morphological (micro-fabricated, textured) solid substrates.

• A thorough explanation of how capillary forces act on liquid interfaces in contact with micro-fabricated surfaces.

• Analysis of how droplets can be manipulated, handled, or transported using electric fields (electrowetting), acoustic actuation (surface acoustic waves), or by a carrier liquid (microflow).

• A fresh perspective on the future of microfluidics.

Readership

Engineers, scientists, and developers in biotechnology, nanotechnology, MEMS, and pharmaceuticals. This book will also be an excellent text for a Masters level course in physics and biotechnology.

Table of Contents

Preface

Acknowledgments

Chapter 1. Introduction: Digital Microfluidics in Today’s Microfluidics

1.1 The development of microfluidics

1.2 The advantages of digital and droplet microfluidics compared to conventional microflows

1.3 The respective place of digital and droplet microfluidics in today’s microfluidics

1.4 Summary

References

Chapter 2. Theory of Wetting

2.1 Introduction

2.2 Interfaces and surface tension

2.3 Laplace’s law and applications

2.4 Wetting—partial or total wetting

2.5 Contact angle—Young’s law

2.6 Work of adhesion, work of cohesion, and the Young–Dupré’s equation

2.7 Capillary force, force on a triple line

2.8 Measuring surface tension of liquids

2.9 Surface tension of solids

2.10 Minimization of the surface energy and minimal energy surface

2.11 Summary

References

Chapter 3. The Physics of Droplets

3.1 Introduction

3.2 The shape of microdrops

3.3 Drops on inhomogeneous surfaces

3.4 Drops moving by capillarity

3.5 Contact angle hysteresis

3.6 Droplet pinning

3.7 The effect of surfactants

3.8 Marangoni convection

3.9 Evaporation

3.10 Summary

References

Chapter 4. Electrowetting Theory

4.1 Introduction

4.2 Theoretical background

4.3 Lippmann–Young’s law and the electrocapillary equivalence

4.4 Saturation

4.5 Hysteresis

4.6 Working range of EWOD devices

4.7 Materials and substrates

4.8 Discussion: special substrates and new concepts

4.9 Summary

References

Chapter 5. EWOD Microsystems

5.1 Introduction

5.2 Open and covered EWOD microsystems

5.3 Droplet motion

5.4 Division of droplets

5.5 Droplet mergi

Details

No. of pages:
560
Language:
English
Copyright:
© 2013
Published:
Imprint:
William Andrew
Print ISBN:
9781455725502
Electronic ISBN:
9781455728008