Figure 4 .

AFM image of MoS2NPs and Cu2S NPs. (a) AFM image of MoS2 NPs revealing that the size is about 50 to 100 nm; scan size, 10 × 10 μm; scan rate, 2.96 Hz. (b) AFM image of Cu2S NPs; the size is about 50 to 100 nm; scan size, 10 × 10 μm; scan rate, 1.25 Hz.

Bajwa et al. Nanoscale Research Letters 2012 7:328   doi:10.1186/1556-276X-7-328
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