Probing the plasmonic near-field of gold nanocrescent antennas

Rostislav Bukasov, Tamer A. Ali, Peter Nordlander, Jennifer S. Shumaker-Parry

Research output: Contribution to journalArticle

97 Citations (Scopus)

Abstract

We present an investigation of the plasmon-induced electromagnetic near-field around gold nanocrescent (NC) antennas which exhibit localized surface plasmon resonances (LSPRs) in the infrared. To probe the near-field behavior, we monitored the LSPR shift of NCs to adsorption of dielectric layers of varying thickness. The experimental results are analyzed using theoretical simulations, and the EM field decay lengths for the NCs are determined. We discuss how the structural properties of NC antennas influence the near-field properties and compare the results with the near-fields of other metal nanostructures. We show that the near-field distribution around NCs depends strongly on the structural parameters of the NC and that its spatial extent can be tuned to large distances (>700 nm) from the nanostructure surface. In addition, we discuss NC antenna structural changes associated with exposure to ethanol and buffer solutions and the impact on LSPR properties.

Original languageEnglish
Pages (from-to)6639-6650
Number of pages12
JournalACS Nano
Volume4
Issue number11
DOIs
Publication statusPublished - Nov 23 2010
Externally publishedYes

Fingerprint

Surface plasmon resonance
Gold
near fields
antennas
Antennas
gold
surface plasmon resonance
Nanostructures
Structural properties
Buffers
Ethanol
Metals
Infrared radiation
Adsorption
ethyl alcohol
buffers
electromagnetism
adsorption
probes
shift

Keywords

  • Decay length
  • Electromagnetic near-field
  • Infrared Plasmon
  • Nanosphere template lithography
  • Plasmonic nanostructure

ASJC Scopus subject areas

  • Engineering(all)
  • Materials Science(all)
  • Physics and Astronomy(all)

Cite this

Bukasov, R., Ali, T. A., Nordlander, P., & Shumaker-Parry, J. S. (2010). Probing the plasmonic near-field of gold nanocrescent antennas. ACS Nano, 4(11), 6639-6650. https://doi.org/10.1021/nn101994t

Probing the plasmonic near-field of gold nanocrescent antennas. / Bukasov, Rostislav; Ali, Tamer A.; Nordlander, Peter; Shumaker-Parry, Jennifer S.

In: ACS Nano, Vol. 4, No. 11, 23.11.2010, p. 6639-6650.

Research output: Contribution to journalArticle

Bukasov, R, Ali, TA, Nordlander, P & Shumaker-Parry, JS 2010, 'Probing the plasmonic near-field of gold nanocrescent antennas', ACS Nano, vol. 4, no. 11, pp. 6639-6650. https://doi.org/10.1021/nn101994t
Bukasov R, Ali TA, Nordlander P, Shumaker-Parry JS. Probing the plasmonic near-field of gold nanocrescent antennas. ACS Nano. 2010 Nov 23;4(11):6639-6650. https://doi.org/10.1021/nn101994t
Bukasov, Rostislav ; Ali, Tamer A. ; Nordlander, Peter ; Shumaker-Parry, Jennifer S. / Probing the plasmonic near-field of gold nanocrescent antennas. In: ACS Nano. 2010 ; Vol. 4, No. 11. pp. 6639-6650.
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