New plasmonic materials in visible spectrum through electrical charging

Jiangrong Cao, Rajesh Balachandran, Manish K Keswani, Krishna Muralidharan, Slimane Laref, Richard W Ziolkowski, Keith A Runge, Pierre A Deymier, Srini Raghavan, Mamoru Miyawaki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Due to their negative permittivity, plasmonic materials have found increasing number of applications in advanced photonic devices and metamaterials, ranging from visible wavelength through microwave spectrum. In terms of intrinsic loss and permittivity dispersion, however, limitations on available plasmonic materials remain a serious bottleneck preventing practical applications of a few novel nano-photonic device and metamaterial concepts in visible and nearinfrared spectra. To overcome this obstacle, efforts have been made and reported in literature to engineer new plasmonic materials exploring metal alloys, superconductors, graphene, and heavily doped oxide semiconductors. Though promising progress in heavily doped oxide semiconductors was shown in the near-infrared spectrum, there is still no clear path to engineer new plasmonic materials in the visible spectrum that can outperform existing choices noble metals, e.g. gold and silver, due to extremely high free electron density required for high frequency plasma response. This study demonstrates a path to engineer new plasmonic materials in the visible spectrum by significantly altering the electronic properties in existing noble metals through high density charging/discharging and its associated strong local bias effects. A density functional theory model revealed that the optical properties of thin gold films (up to 7 nm thick) can be altered significantly in the visible, in terms of both plasma frequency (up to 12%) and optical permittivity (more than 50%). These corresponding effects were observed in our experiments on surface plasmon resonance of a gold film electrically charged via a high density double layer capacitor induced by a chemically non-reacting electrolyte.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume8632
DOIs
StatePublished - 2013
EventPhotonic and Phononic Properties of Engineered Nanostructures III - San Francisco, CA, United States
Duration: Feb 3 2013Feb 7 2013

Other

OtherPhotonic and Phononic Properties of Engineered Nanostructures III
CountryUnited States
CitySan Francisco, CA
Period2/3/132/7/13

Fingerprint

Plasmonics
visible spectrum
engineers
charging
permittivity
gold
noble metals
Permittivity
Gold
Photonic devices
photonics
Metals
Metamaterials
Precious metals
oxides
Engineers
electrochemical capacitors
microwave spectra
plasma frequencies
Oxides

Keywords

  • Electrochemistry double layer capacity
  • Optical permittivity
  • Plasmonic metal

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Cao, J., Balachandran, R., Keswani, M. K., Muralidharan, K., Laref, S., Ziolkowski, R. W., ... Miyawaki, M. (2013). New plasmonic materials in visible spectrum through electrical charging. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 8632). [86321I] https://doi.org/10.1117/12.2002883

New plasmonic materials in visible spectrum through electrical charging. / Cao, Jiangrong; Balachandran, Rajesh; Keswani, Manish K; Muralidharan, Krishna; Laref, Slimane; Ziolkowski, Richard W; Runge, Keith A; Deymier, Pierre A; Raghavan, Srini; Miyawaki, Mamoru.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8632 2013. 86321I.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Cao, J, Balachandran, R, Keswani, MK, Muralidharan, K, Laref, S, Ziolkowski, RW, Runge, KA, Deymier, PA, Raghavan, S & Miyawaki, M 2013, New plasmonic materials in visible spectrum through electrical charging. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 8632, 86321I, Photonic and Phononic Properties of Engineered Nanostructures III, San Francisco, CA, United States, 2/3/13. https://doi.org/10.1117/12.2002883
Cao J, Balachandran R, Keswani MK, Muralidharan K, Laref S, Ziolkowski RW et al. New plasmonic materials in visible spectrum through electrical charging. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8632. 2013. 86321I https://doi.org/10.1117/12.2002883
Cao, Jiangrong ; Balachandran, Rajesh ; Keswani, Manish K ; Muralidharan, Krishna ; Laref, Slimane ; Ziolkowski, Richard W ; Runge, Keith A ; Deymier, Pierre A ; Raghavan, Srini ; Miyawaki, Mamoru. / New plasmonic materials in visible spectrum through electrical charging. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8632 2013.
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