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Download fileRegular Assembly of Polymer Nanoparticles by Optical Trapping Enhanced with a Random Array of Si Needles for Reconfigurable Photonic Crystals in Liquid
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posted on 03.12.2019, 17:04 authored by Itsuo Hanasaki, Tatsuya Shoji, Yasuyuki TsuboiWe report the optical trapping of many particles with
feasible
laser powers by the nanostructured semiconductor-assisted (NASSCA)
trapping technique. Furthermore, we have found that the random array
of silicon needles with spacings substantially smaller than the nanoparticle
sizes is advantageous not only for the trapping force-field enhancement
but also for the realization of close-packed assembly of nanoparticles.
This counterintuitive approach is promising for the realizations of
collective structural orders such as reconfigurable photonic crystals
in liquid, which have been often regarded to require either top-down
templates or full self-assembly beyond control.
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techniquesilicon needlescounterintuitive approachlaser powersarrayRegular Assemblytop-down templatesnanoparticle sizesclose-packed assemblyRandom Arrayrealizationself-assemblyNASSCAforce-field enhancementOptical Trapping EnhancedReconfigurable Photonic CrystalsspacingSi NeedlesPolymer Nanoparticlesreconfigurable photonic crystalsnanostructured semiconductor-assisted