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Effect of Temperature on Coalescence Behavior of Unsupported Gold Nanoparticles

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Abstract

The coalescing behavior of gold nanoparticles was studied by employing molecular dynamics simulations based on a semi-empirical embedded-atom method. Investigations on the coalescing process of the faceted nanoparticles revealed that at relatively low-temperatures, plastic deformation by slip motion was the main mechanism of coalescence, while near the melting point, coalescence was preceded by local fluid motion. Different initial configuration and coalescing temperature have a substantial influence on the coalescing behavior, making different final structures such as twinned face-centered cubic or amorphous nanoparticles.

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Acknowledgments

This work was supported by Basic Science Research Program (2017R1A2B4012871), Leading Foreign Research Institute Recruitment Program (2013K1A4A3055679), and the Priority Research Centers Program (2009-0093814) through the National Research Foundation of Korea (NRF).

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Authors and Affiliations

  1. School of Materials Science and Engineering, Kookmin University, Seoul, 02707, Korea

    Kayoung Yun, Jaegab Lee & Ho-Seok Nam

  2. Computational Science Research Center, Korea Institute of Science and Technology, Seoul, 02792, Korea

    Kayoung Yun

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  1. Kayoung Yun
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Correspondence to Ho-Seok Nam.

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Yun, K., Lee, J. & Nam, HS. Effect of Temperature on Coalescence Behavior of Unsupported Gold Nanoparticles. Electron. Mater. Lett. 15, 133–139 (2019). https://doi.org/10.1007/s13391-018-0090-6

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