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Integrated platform based on high refractive index contrast waveguide for optical guiding and sorting
2010
Complex Light and Optical Forces IV
The high-refractive index contrast (Δn ~0.65 as compared to silicon oxide) of Tantalum pentoxide (Ta 2 O 5 ) waveguide allows strong confinement of light in waveguides of sub-micron thickness (200 nm). This enhances the intensity in the evanescent field, which we have employed for efficient propelling of micro-particles. The feasibility of opto-fluidics sorting of different sized micro-particles based on their varying optical propulsion velocity is suggested. Optical propulsion of fixed red
doi:10.1117/12.840632
fatcat:g2xs7d62qfemhhshpkg6qrg57m