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Materials 2011, 4(2), 368-379; doi:10.3390/ma4020368

Coalescence and Collisions of Gold Nanoparticles

1,5, 1,2,3,* , 1,3, 4 and 2
Received: 28 December 2010; in revised form: 21 January 2011 / Accepted: 27 January 2011 / Published: 28 January 2011
(This article belongs to the Special Issue Metal Nanoparticles)
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Abstract: We study the assembling of small gold clusters subject to collisions and close contact coalescence by using molecular dynamics simulations to simulate events that occur typically in the sputtering process of synthesis. Our results support the notion that the kinetics of coalescence processes strongly determine the geometry and structure of the final particle. While impact velocities, relative orientations, and the initial shape of the interacting particles are unlikely to strictly determine the structural details of the newly formed particle, we found that high initial temperatures and/or impact velocities increase the probability of appearance of icosahedral-like structures, Wulff polyhedra are likely to be formed as a product of the interactions between nanospheres, while the appearance of fcc particles of approximately cuboctahedral shape is mainly due to the interaction between icosahedra.
Keywords: gold nanoparticles; coalescence; collisions; molecular dynamics; common neighbor analysis
gold nanoparticles; coalescence; collisions; molecular dynamics; common neighbor analysis
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.

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MDPI and ACS Style

Antúnez-García, J.; Mejía-Rosales, S.; Pérez-Tijerina, E.; Montejano-Carrizales, J.M.; José-Yacamán, M. Coalescence and Collisions of Gold Nanoparticles. Materials 2011, 4, 368-379.

AMA Style

Antúnez-García J, Mejía-Rosales S, Pérez-Tijerina E, Montejano-Carrizales JM, José-Yacamán M. Coalescence and Collisions of Gold Nanoparticles. Materials. 2011; 4(2):368-379.

Chicago/Turabian Style

Antúnez-García, Joel; Mejía-Rosales, Sergio; Pérez-Tijerina, Eduardo; Montejano-Carrizales, Juan Martín; José-Yacamán, Miguel. 2011. "Coalescence and Collisions of Gold Nanoparticles." Materials 4, no. 2: 368-379.

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