Materials 2013, 6(1), 198-205; doi:10.3390/ma6010198
Article

Hardness and Elastic Modulus on Six-Fold Symmetry Gold Nanoparticles

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Received: 6 November 2012; in revised form: 20 December 2012 / Accepted: 6 January 2013 / Published: 14 January 2013
(This article belongs to the Special Issue Metal Nanoparticles 2012)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: The chemical synthesis of gold nanoparticles (NP) by using gold (III) chloride trihydrate (HAuCl∙3H2O) and sodium citrate as a reducing agent in aqueous conditions at 100 °C is presented here. Gold nanoparticles areformed by a galvanic replacement mechanism as described by Lee and Messiel. Morphology of gold-NP was analyzed by way of high-resolution transmission electron microscopy; results indicate a six-fold icosahedral symmetry with an average size distribution of 22 nm. In order to understand the mechanical behaviors, like hardness and elastic moduli, gold-NP were subjected to nanoindentation measurements—obtaining a hardness value of 1.72 GPa and elastic modulus of 100 GPa in a 3–5 nm of displacement at the nanoparticle’s surface.
Keywords: nanoparticles; gold; HRTEM; nanoindentation; hardness
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MDPI and ACS Style

Ramos, M.; Ortiz-Jordan, L.; Hurtado-Macias, A.; Flores, S.; Elizalde-Galindo, J.T.; Rocha, C.; Torres, B.; Zarei-Chaleshtori, M.; Chianelli, R.R. Hardness and Elastic Modulus on Six-Fold Symmetry Gold Nanoparticles. Materials 2013, 6, 198-205.

AMA Style

Ramos M, Ortiz-Jordan L, Hurtado-Macias A, Flores S, Elizalde-Galindo JT, Rocha C, Torres B, Zarei-Chaleshtori M, Chianelli RR. Hardness and Elastic Modulus on Six-Fold Symmetry Gold Nanoparticles. Materials. 2013; 6(1):198-205.

Chicago/Turabian Style

Ramos, Manuel; Ortiz-Jordan, Luis; Hurtado-Macias, Abel; Flores, Sergio; Elizalde-Galindo, José T.; Rocha, Carmen; Torres, Brenda; Zarei-Chaleshtori, Maryam; Chianelli, Russell R. 2013. "Hardness and Elastic Modulus on Six-Fold Symmetry Gold Nanoparticles." Materials 6, no. 1: 198-205.

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