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The purpose of this tutorial is to give a practical introduction to surface plasmon nanophotonics. Surface plasmon polaritons (SPPs) are introduced as a waveguide mode at a single interface. It is shown how SPPs in nanostructures can both concentrate the local field intensity and shorten the optical wavelength. Localised surface plasmons (LSPs) are introduced and described using the quasi-static approximation...
A dynamic theory, using Maxwellpsilas stress tensor analysis and the generalized multipole technique, is proposed to analyze inter-particle spacing in the dual-beam trap. The theory agrees well with our experiments.
Interactions between optical and hydrodynamic forces enable selective particle trapping and control inside a planar optofluidic chip. The unique flow-dependent nature of the traps allows for active particle sorting with extensions to immiscible microfluidic systems.
A linear array of micron diameter polystyrene spheres is trapped using a dual-beam fiber-optic trap fully-integrated within a microfluidic chip. The average particle spacing is sensitive to the number of particles in the trap. Maxwell's stress tensor analysis agrees well with the experiments. This fully integrated optical trap environment may be extended to the manipulation and analysis of biological...
A dual-fiber optic trap is integrated with microfluidics, and stable circulatory particle trapping is observed. The unique circulating and flow-dependant nature of the trap enables active microfluidic mixing as well as particle sorting and control.
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