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. Author manuscript; available in PMC: 2016 May 1.
Published in final edited form as: Eur J Pharm Biopharm. 2015 Mar 7;92:120–129. doi: 10.1016/j.ejpb.2015.02.017

Figure 3.

Figure 3

Gold nanoparticles were characterized using dynamic light scattering (DLS) to determine hydrodynamic size in solution and with zeta potential to determine surface charge. (A) The hydrodynamic size of two and three layer gold nanoparticles was determined to be 74.91 ± 13.3 nm and 85.26 ± 18.7 nm, respectively. (B) Two layer gold nanoparticles exhibited an anionic charge of −20 mV, while three layer gold nanoparticles were more neutrally charged at −2 mV.