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Nano Lett. 2013 Sep 11;13(9):4118-22. doi: 10.1021/nl4016254. Epub 2013 Aug 20.

Transport and trapping in two-dimensional nanoscale plasmonic optical lattice.

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Department of Electrical Engineering, ‡Department of Chemistry, §Center for Nanotechnology, Materials Sciences, and Microsystems, and ∥Frontier Research Center on Fundamental and Applied Science of Matters, National Tsing Hua University , Hsinchu 30013, Taiwan, R.O.C.


We report the transport and trapping behavior of 100 and 500 nm diameter nanospheres in a plasmon-enhanced two-dimensional optical lattice. An optical potential is created by a two-dimensional square lattice of gold nanostructures, illuminated by a Gaussian beam to excite plasmon resonance. The nanoparticles can be guided, trapped, and arranged using this optical potential. Stacking of 500 nm nanospheres into a predominantly hexagonal closed pack crystalline structure under such a potential is also reported.


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