Abstract
The coalescence process of copper oxide particles of 3∼ ∼8 nm was studied by in-situ HRTEM observation with no external heating. We found that merging of two particles is much faster as compared to the reshaping process. The coalescence of pre-aligned nanoparticles leads to the formation of a single nanocrystal. The lattice mismatch between two merged misaligned particles can be released by structural relaxation in small nanoparticles and by interface movement in large nanoparticles. Surface atom migration is the leading mechanism during the whole coalescence process.
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Acknowledgements
The authors would like to thank Drs. Firooz Rasouli, Sarojini Deevi and Sohini PalDey for their valuable contributions.
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Zhang, W., Miser, D. Coalescence of oxide nanoparticles: In situ HRTEM observation. J Nanopart Res 8, 1027–1032 (2006). https://doi.org/10.1007/s11051-005-9056-3
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DOI: https://doi.org/10.1007/s11051-005-9056-3