Abstract
Gold nanoparticles are of particular interest due to their wide applications in biology, catalysis, and photonics devices. Therefore, the high-resolution transmission electron microscopy, a powerful characterization tool, was utilized to elucidate the atomic-level structure of gold nanoparticles that contain twinning and special grain boundaries. This work presents quantitative results of atomic resolution images of no-covered gold nanoparticles synthesized by the sputtering method. The sample was composed of nanoparticles of different geometric structures and several crystal defects. Stacking faults with Frank and Shockley partial dislocations were the defects found in the crystal structure. The formation of the stacking faults resulted from the random gold atom addition onto the B or C sites of the (111) surface during the crystal growth in the [111] direction. And finally, the electronic radiation effects observed during the analysis were rotation, displacement, and coalescence of nanoparticles.
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The author wishes would acknowledge financial support from Instituto Mexicano del Petróleo through the project-D.00483.
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Angeles-Chavez, C. HRTEM study of crystal defects in gold nanoparticles. MRS Advances 6, 834–838 (2021). https://doi.org/10.1557/s43580-021-00172-4
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DOI: https://doi.org/10.1557/s43580-021-00172-4