Page 8 - Optofluidics Fundamentals, Devices, and Applications
P. 8
Co n t e n t s vii
5 Optofluidic Trapping and Transport Using
Planar Photonic Devices . . . . . . . . . . . . . . . . . . . . . . . 75
Extended Abstract . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
5-1 Optically Driven Microfluidics . . . . . . . . . . . . . 77
5-1-1 A Brief Review of Traditional
Transport Mechanisms in Microfl uidic
Devices . . . . . . . . . . . . . . . . . . . . . . . . . 77
5-1-2 Optical Manipulation in Microfl uidic
Devices . . . . . . . . . . . . . . . . . . . . . . . . . 78
5-1-3 Some Limitations of Traditional
Optical Manipulation Systems . . . . . 79
5-1-4 Near-Field Optical Manipulation . . . 80
5-2 Optofluidic Transport . . . . . . . . . . . . . . . . . . . . 80
5-2-1 Qualitative Description of Optofl uidic
Transport . . . . . . . . . . . . . . . . . . . . . . . 80
5-2-2 Why Is Optofl uidic Transport
Interesting? . . . . . . . . . . . . . . . . . . . . . . 82
5-3 Demonstrations of Optofluidic Transport . . . . . 83
5-3-1 Optofluidic Transport within Solid-
(and Liquid-) Core Waveguiding
Device . . . . . . . . . . . . . . . . . . . . . . . . . . 83
5-3-2 A Detailed Example—Optofl uidic
Transport in PDMS Microfl uidics
Using SU-8 Waveguides . . . . . . . . . . . 87
5-4 Theory of Optofluidic Transport . . . . . . . . . . . 90
5-4-1 Overview and Recent Literature . . . . 90
5-4-2 Microscale Hydrodynamics and
Particle Transport . . . . . . . . . . . . . . . . 91
5-4-3 Electromagnetic Forces
on a Particle . . . . . . . . . . . . . . . . . . . . . 93
5-4-4 Solutions in Different Transport
Regimes . . . . . . . . . . . . . . . . . . . . . . . . 94
5-4-5 Comments on the Infl uence of
Brownian Motion and Trapping
Stability . . . . . . . . . . . . . . . . . . . . . . . . . 96
5-5 Optofluidic Chromatography . . . . . . . . . . . . . 100
5-6 Summary and Conclusions . . . . . . . . . . . . . . . 103
References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
6 Optofluidic Colloidal Photonic Crystals . . . . . . . . . 107
6-1 Introduction to Colloidal Crystals . . . . . . . . . 108
6-1-1 Colloids and Colloidal Photonic
Crystals . . . . . . . . . . . . . . . . . . . . . . . . . 108
6-1-2 Photonic Characteristics of Colloidal
Photonic Crystals . . . . . . . . . . . . . . . . 109
