Micro machining and Wettability of PMMA

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Table of contents

Chapter 1 Literature Review
1.1 Changes due to scaling down
1.1.1 Change of the relative importance of the four forces
1.1.2 Confinement
1.1.3 Specific surface area
1.1.4 Wettability and Surfactants
1.2 Droplet and bubble
1.2.1 Droplet (bubble) formation
1.2.2 Droplet (bubble) breakup
1.2.3 Satellite Droplet formation
1.2.4 Coalescence of droplet (bubble)
1.3 Outline
Chapter 2 Experimental
2.1 Fabrication Methods and Experimental Techniques
2.2 Micro machining and Wettability of PMMA
2.2.1 Precise milling
2.2.2 Wettability of PMMA
2.2.3 PMMA Microchannels
2.3 Experimental Setup
2.3.1 Experimental setup for microsystems
2.3.2 Experimental for ferrodroplet coalescence in the ambient air
2.4 Numerical methods
2.5 Image analysis
2.6 Physical properties of materials used in the experiments
Chapter 3 Water-based ferrofluid droplet formation in a microfluidic flow-focusing device 
3.1 Introduction
3.2 Results and discussion
3.2.1 Droplet formation in the dripping regime under three configurations of magnetic fields
3.2.2 Volume of ferrofluid droplet and the formation mechanism
3.3 Conclusions
Chapter 4 Droplet (Bubble) breakup process in a microfluidic T-junction
4.1 Introduction
4.1.1 The breakup of droplet under magnetic field
4.1.2 Asymmetrical breakup of bubble due to feedback
4.2 Results and discussion
4.2.1 Ferrodroplet breakup
4.2.2 Bubble breakup
4.3 Conclusions
Chapter 5 The formation of satellite droplet 􀋄bubble􀋅in different micro-device
5.1 Introduction
5.2 Results and discussion
5.2.1 Formation of satellite droplet due to neck pinch-off
5.2.2 Formation of satellite droplet in T-junction
5.2.3 The total volume of the satellite droplets
5.2.4 The formation of satellite droplet (bubble) due to tip stream
5.3 Conclusions
Chapter 6 Droplet (Bubble) coalescence
6.1 Introduction
6.1.1 Bubble coalescence in microfluidic geometry
6.1.2 The dynamics of droplet coalescence
6.2 Results and discussion
6.2.1 Bubble coalescence in microchannel
6.2.2 Coalescence of ferrodroplet
6.3 Conclusions
Chapter 7 General conclusions and prospects
7.2 Prospects
Nomenclature
References