Gas-Aggregated Copper Nanoparticles with Long-term Plasmon Resonance Stability

Metal nanoparticles (NPs) possessing localized surface plasmon resonance (LSPR) are of high interest for applications in optics, electronics, catalysis, and sensing. The practically important issue is the stability of the LSPR, which often limits the use of some metals due to their chemical reactivi...

Full description

Saved in:
Bibliographic Details
Published in:Plasmonics (Norwell, Mass.) Mass.), 2021-04, Vol.16 (2), p.333-340
Main Authors: Popok, Vladimir N., Novikov, Sergey M., Lebedinskij, Yurij Yu, Markeev, Andrey M., Andreev, Aleksandr A., Trunkin, Igor N., Arsenin, Aleksey V., Volkov, Valentyn S.
Format: Article
Language:English
Subjects:
Biochemistry
Biological and Medical Physics
Biophysics
Biotechnology
Chemistry
Chemistry and Materials Science
Copper
Gold
Magnetron sputtering
Nanoparticles
Nanotechnology
Oxidation
Plasmonics
Silver
Surface plasmon resonance
Surface stability
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Metal nanoparticles (NPs) possessing localized surface plasmon resonance (LSPR) are of high interest for applications in optics, electronics, catalysis, and sensing. The practically important issue is the stability of the LSPR, which often limits the use of some metals due to their chemical reactivity leading to degradation of the NP functionality. In this work, copper NPs of two distinct sizes are produced by magnetron sputtering gas aggregation. This method ensures formation of the particles with high purity and monocrystallinity, enhancing the chemical inertness and providing a superior time stability of the plasmonic properties. Additionally, a simple UV-ozone treatment, which leads to the formation of an oxide shell around the copper NPs, is found to be an efficient method to prevent following gradual oxidation and assure the LSPR stability in ambient atmospheric conditions for periods over 100 days even for small (10–12 nm in diameter) NPs. The obtained results allow for significant improvement of the competitiveness of copper NPs with gold or silver nanostructures, which are traditionally used in plasmonics.
ISSN:1557-1955
1557-1963
DOI:10.1007/s11468-020-01287-4