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. 2010 Apr 8;10(4):3585–3596. doi: 10.3390/s100403585

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© 2010 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland.

This article is an open-access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).

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Figure 3. — (a) and (c) The SEM images of the Au NP assembled films prepared with two different sizes of Au NPs; (b) and (d) The size distribution of Au NPs in (a) and (c).The diameter of (b) and (d) is 48 ± 6 nm and 23 ± 2 nm, respectively.