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. 2015 Oct 13;5:15227. doi: 10.1038/srep15227

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(a) Whole frame of TIRFM images of (Zn)CuInS alloyed QDs (Cu:In:Zn stoichiometric ratio of 1:4:3) dispersed with organic solvent (90% hexane-10% octane) on glass substrate at room temperature (512 × 512 pixel). (b) Magnification of the selected area from (a). (c) Whole frame of TIRFM image of (Zn)CuInS/ZnS QDs (Cu:In:Zn stoichiometric ratio of 1:4:3, the growth time of ZnS shell is 10 h) dispersed with organic solvent (90% hexane-10% octane) on glass substrate at room temperature (512 × 512 pixel). (d) Magnification of the selected area from (c). All the QDs are well separated and no aggregation is observed in this case. The exposure time is 50 ms.