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Amorphization of Cu nanoparticles: effects on surface plasmon resonance

Amekura, H.; Johannessen, B.; Sprouster, D. J.; Ridgway, M. C.


Crystalline copper nanoparticles (NPs) were formed in silica by multi-energy MeV ion implantations and then transformed to amorphous NPs by irradiation with 5 MeV Sn3+ ions. Optical absorptionspectra of both the phases were evaluated in the ultra-violet to near-infrared regions. Compared with corresponding crystalline NPs of the same mean diameter, the amorphous NPs showed a low-energy shift of the surface plasmon resonance around 2.2 eV and less prominent absorptionstructure around 4 eV. These...[Show more]

CollectionsANU Research Publications
Date published: 2011-07-25
Type: Journal article
Source: Applied Physics Letters
DOI: 10.1063/1.3615307


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