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. 2013 Jun 18;13(6):7813–7826. doi: 10.3390/s130607813

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© 2013 by the authors; licensee MDPI, 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 8. — XPS spectra for platinum core particle (39.8 nm) (A) and Pt_39.8@Ag_y particles with an optimal silver shell thickness of 1.3 (B); 5.2 (C); and 9.1 (D) nm. The inserted graphs show the Pt 4f_7/2 and 4f_5/2 peaks (solid curves) and the fitting with the asymmetric G-L mixed function (circles).