Open-Channel Microfluidics

Nomenclature

Introduction: open-channel microfluidics and open microfluidics

1. Paper-based microfluidics

2. Thread-based microfluidics

3. Sessile droplets microfluidics

4. Open-channel microfluidics

5. Book contents

References

Chap.1. Capillarity theoretical basis

Introduction

1.1. Liquid surface tension

1.2. Laplace pressure

1.3. Liquid-liquid surface tension

1.4. Contact with solid surface: Young’s law

1.5. Neumann’s construction

1.6. Work of adhesion, work of cohesion and the Young-Duprė equation

1.7. Solid surface energy: Zisman’s approach

1.7.1. Using Young’s law

1.7.2. Using Zisman’s plot

1.8. Wetting and pinning

1.8.1. Wetting

1.8.2. Pinning and canthotaxis

1.9. Wenzel law

1.10. Cassie-Baxter law

1.11. Capillary rise

1.12. Marangoni convection

References

Chap.2. Condition for capillary flow in open channels

Abstract

2.1. Spontaneous capillary flow in monolithic channel

2.2. Spontaneous capillary flow in composite open channels: the generalized Cassie condition

2.3. Enhanced open capillary flows

2.3.1. Constant additional inlet pressure

2.3.2. Overfilled reservoir: Initial additional Laplace pressure

2.4. Conclusions

References

Chap.3. Flow dynamics in open channels

Abstract

3.1. Background: Spontaneous capillary flow in composite, closed-channels of arbitrary uniform cross-section

3.2. Flow dynamics in open micro-channels of uniform cross section

3.3. Flow dynamics in open micro-channels of variable cross section

3.3.1. Sudden constriction and enlargements

3.3.2. Sudden enlargement with pinning: Open capillary valves

3.3.3. Progressive enlargements

3.3.4. Capillary pumps

3.3.5. Filters

3.3.6. One-way wicking

3.4. The capillary dynamics of non-Newtonian fluids

3.4.1. Shear-thinning fluids

3.4.2. The case of whole blood

References

Chap.4. Open-channel geometries

Abstract

Introduction

4.1. Rectangular channels

4.2. Rectangular channels with imperfect corners

4.3. Rounded channels

4.4. Semi-cylindrical channel

4.5. Suspended channels

4.6. Rails

4.7. Embossed channels

4.8. Fiber bundles and flow caging

4.9. Capillary rise and uphill open capillary flows

4.10. Capillary networks

4.10.1. Example #1

4.10.2. Example #2

4.10.3. Capillary flow after a bypass or a derivation

Conclusion

References

Chap.5. Capillary filaments

Abstract

5.1. Capillary filaments: the Concus-Finn condition

5.2. The case of V-grooves

5.3. Capillary filaments in open-channel turns

5.4. Capillary filaments in non-uniform channels

5.5. Detached capillary filaments

5.6. Metastable capillary filaments

5.7. Capillary filaments driving SCF

5.8. Dynamics of capillary filaments

5.9. Drying of capillary filaments

5.10. Capillary filaments stopped by rounded wedges

Conclusion

References

Chap.6. Two-phase open-channel capillary flows

Introduction

6.1. Plugs in uniform cross-section open-channels

6.1.1. Quasi-steady state approach: SCF condition in presence of plugs

6.1.2. Plugs dynamics in open-channel capillary flow

6.1.3. Conclusions

6.1.4. Capillary wagons

6.2. Bypasses and bifurcations

6.2.1. Bifurcations

6.2.2. Bypasses

6.3. Plugs and capillary filaments

6.3.1. Plugs moved by capillary filaments

6.3.2. Plugs blocked by reverse capillary filaments

Conclusions

References

Chap.7. Applications

Abstract

7.1. Materials and fabrication

7.2. Space: design of vanes

7.2.1. Space cup

7.2.2. Vanes

7.3. Microfluidics

7.3.1. Capillary channels on paper

7.3.2. Evaporation capillary pumping

7.4. Biology, biotechnology and medicine

7.4.1. Gel electrophoresis

7.4.2. Micro-Dots for cell studies

7.4.3. Mimicking lungs

7.4.4. Micro-device for cell behavior studies

7.4.5. In-vivo sensors

7.4.6. Open-channel microfluidics for whole blood analysis

7.5. Biochemistry: Liquid-liquid extraction

Conclusion

References

Chap 8: Epilog

References