Abstract
The first evidence of particle confinement using plasmonics was demonstrated by Garcés-Chávez in 2006. They used the Kretschmann configuration with the top surface of a prism coated by a thin gold layer in order to observe large scale ordering of colloidal particles.1 Later Righini et al. modified the experimental apparatus by fabricating golden micro-disks, instead of using a thin gold layer, leading to the successful trapping of polystyrene spheres on top of these microstructures.2 In 2011, Gordon and Pang achieved 12 nm particle confinement. Their devices consisted of double nano-holes which were connected by a slit punched on a thin gold film.3
© 2015 Japan Society of Applied Physics, Optical Society of America
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