Abstract

Applications of copper nanoparticles (NPs) are restricted due to their proneness to oxidation by ambient oxygen if not properly protected. Here we discuss the optical properties and application potential of copper NPs covered by a thin oxide layer. Considering Cu@Cu2O core–shell type structures with different core size and shell thicknesses, linear optical properties of surface-oxidized copper NPs have been studied theoretically. Contrary to common perception, it has been demonstrated that surface-oxidized copper NPs have certain advantages for plasmonic applications. While the position of the surface plasmon resonance (SPR) can be fine-tuned by varying the thickness of the oxide layer, their plasmonic response can be enhanced (SPR intensity gain up to 30%) by adjusting the thickness of the oxide layer.

© 2011 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Optical characterization of gold-cuprous oxide interfaces for terahertz emission applications

Gopika K. P. Ramanandan, Aurèle J. L. Adam, Gopakumar Ramakrishnan, Peter Petrik, Ruud Hendrikx, and Paul C. M. Planken
Appl. Opt. 53(10) 1994-2000 (2014)

Implantation-synthesized Cu/Cu–Zn core/shell nanoparticles in SiO2 and their optical properties

Guangyi Jia, Haitao Dai, Xiaoyu Mu, Chungang Guo, and Changlong Liu
Opt. Mater. Express 5(5) 1156-1167 (2015)

How an oxide shell affects the ultraviolet plasmonic behavior of Ga, Mg, and Al nanostructures

Yael Gutierrez, Dolores Ortiz, Juan M. Sanz, Jose M. Saiz, Francisco Gonzalez, Henry O. Everitt, and Fernando Moreno
Opt. Express 24(18) 20621-20631 (2016)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (7)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription