Abstract
Nanoscale writing of Cu nanoparticles in glasses is introduced using focused electron irradiation by transmission electron microscopy. Two types of copper borosilicate glasses, one with high and another with low Cu loading, have been tested at energies of 200–300 keV, and formation of Cu nanoparticles in a variety of shapes and sizes using different irradiation conditions is achieved. Electron energy loss spectroscopy analysis, combined with high-resolution transmission electron microscopy imaging, confirmed the irradiation-induced precipitated nanoparticles as metallic, while furnace annealing of the glass triggered dendrite-shaped particles of copper oxide. Unusual patterns of nanoparticle rings and chains under focused electron beam irradiation are also presented. Conclusively, electron beam patterning of Cu-loaded glasses is a promising alternative route to well-established femtosecond laser photoreduction of Cu ions in glass.
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Acknowledgments
We thank the Iraqi Kurdistan Regional Government/Ministry of Higher Education and Scientific Research for the funding of the project as a part of Human Capacity Development Program (HCDP). The authors also thank Professor Russell J. Hand for his helpful contribution.
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Sabri, M.M., Möbus, G. Electron irradiation induced nanocrystal formation in Cu-borosilicate glass. J Nanopart Res 18, 73 (2016). https://doi.org/10.1007/s11051-016-3376-3
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DOI: https://doi.org/10.1007/s11051-016-3376-3