Figure 3.

UV-vis absorption spectrum and shift in the absorption of urchin-like gold nanoparticles. (A) UV-vis absorption spectrum of the synthesised urchin-like gold nanoparticles. (B) Shift in the absorption (λrps) of urchin-like gold nanoparticles with particle size.

López-Muñoz et al. Nanoscale Research Letters 2012 7:667   doi:10.1186/1556-276X-7-667
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