Ultrasmooth, highly spherical monocrystalline gold particles for precision plasmonics

You Jin Lee, Nicholas B. Schade, Li Sun, Jonathan A. Fan, Doo Ri Bae, Marcelo M. Mariscal, Gaehang Lee, Federico Capasso, Stefano Sacanna, Vinothan N. Manoharan, Gi Ra Yi

Research output: Contribution to journalArticle

Abstract

Ultrasmooth, highly spherical monocrystalline gold particles were prepared by a cyclic process of slow growth followed by slow chemical etching, which selectively removes edges and vertices. The etching process effectively makes the surface tension isotropic, so that spheres are favored under quasi-static conditions. It is scalable up to particle sizes of 200 nm or more. The resulting spherical crystals display uniform scattering spectra and consistent optical coupling at small separations, even showing Fano-like resonances in small clusters. The high monodispersity of the particles we demonstrate should facilitate the self-assembly of nanoparticle clusters with uniform optical resonances, which could in turn be used to fabricate optical metafluids. Narrow size distributions are required to control not only the spectral features but also the morphology and yield of clusters in certain assembly schemes.

Original languageEnglish (US)
Pages (from-to)11064-11070
Number of pages7
JournalACS Nano
Volume7
Issue number12
DOIs
StatePublished - Dec 23 2013

Fingerprint

Gold
Etching
gold
etching
Self assembly
Surface tension
optical resonance
optical coupling
Particle size
Scattering
Nanoparticles
Crystals
self assembly
interfacial tension
apexes
assembly
nanoparticles
scattering
crystals

Keywords

  • chemical etching
  • Fano-like resonance
  • gold nanospheres
  • monodisperse
  • plasmonics

ASJC Scopus subject areas

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

Cite this

Lee, Y. J., Schade, N. B., Sun, L., Fan, J. A., Bae, D. R., Mariscal, M. M., ... Yi, G. R. (2013). Ultrasmooth, highly spherical monocrystalline gold particles for precision plasmonics. ACS Nano, 7(12), 11064-11070. https://doi.org/10.1021/nn404765w

Ultrasmooth, highly spherical monocrystalline gold particles for precision plasmonics. / Lee, You Jin; Schade, Nicholas B.; Sun, Li; Fan, Jonathan A.; Bae, Doo Ri; Mariscal, Marcelo M.; Lee, Gaehang; Capasso, Federico; Sacanna, Stefano; Manoharan, Vinothan N.; Yi, Gi Ra.

In: ACS Nano, Vol. 7, No. 12, 23.12.2013, p. 11064-11070.

Research output: Contribution to journalArticle

Lee, YJ, Schade, NB, Sun, L, Fan, JA, Bae, DR, Mariscal, MM, Lee, G, Capasso, F, Sacanna, S, Manoharan, VN & Yi, GR 2013, 'Ultrasmooth, highly spherical monocrystalline gold particles for precision plasmonics', ACS Nano, vol. 7, no. 12, pp. 11064-11070. https://doi.org/10.1021/nn404765w
Lee YJ, Schade NB, Sun L, Fan JA, Bae DR, Mariscal MM et al. Ultrasmooth, highly spherical monocrystalline gold particles for precision plasmonics. ACS Nano. 2013 Dec 23;7(12):11064-11070. https://doi.org/10.1021/nn404765w
Lee, You Jin ; Schade, Nicholas B. ; Sun, Li ; Fan, Jonathan A. ; Bae, Doo Ri ; Mariscal, Marcelo M. ; Lee, Gaehang ; Capasso, Federico ; Sacanna, Stefano ; Manoharan, Vinothan N. ; Yi, Gi Ra. / Ultrasmooth, highly spherical monocrystalline gold particles for precision plasmonics. In: ACS Nano. 2013 ; Vol. 7, No. 12. pp. 11064-11070.
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