Figure 1.

(a) SEM image of the PS colloidal crystal template; (b) SEM image of deposited Ag film coated PS spheres monolayer. The inset one is the magnification SEM image of (b); (c) SEM image of Ag NP island produced after removing the PS spheres monolayer; the inset one is a specially magnified Ag NP on the TiO2 film; (d) Schematic figure depicting the preparation of triangular metal NP island connected with semiconductor by PS lithography strategy, and the inset one is the cross sectional TEM image of Ag/TiO2 nanocomposite.

Xu et al. Nanoscale Research Letters 2012 7:239   doi:10.1186/1556-276X-7-239
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