Figure 4.

Normalized absorption spectra of PEG-coated AuNPs in the presence of 10.0% (w/v) NaCl solution. (A) 16-nm AuNPs and (B) 26-nm AuNPs.

Ling et al. Nanoscale Research Letters 2013 8:538   doi:10.1186/1556-276X-8-538
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