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. 2014 Mar 13;9(3):e89048. doi: 10.1371/journal.pone.0089048

Figure 1.

Figure 1

UV-Vis spectra of AuNPs aggregated with different NaCl concentrations (a). Hydrodynamic radius difference between aggregated and as-prepared nanoparticles measured with DLS as a function of NaCl concentration (b).