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. 2017 May 5;6(5):e16258. doi: 10.1038/lsa.2016.258

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Sorting particles of different radii (specified in the legend) touching the silver substrate. The particle permittivity is ε=3, Gaussian beam waist is w=10λ, and the focus position is f=−100 μm, λ=342 nm, ε₂=−1.25+0.32i and ε₁=1.