Reversible Shape and Plasmon Tuning in Hollow AgAu Nanorods

Sadegh Yazdi, Josée R. Daniel, Nicolas Large, George C Schatz, Denis Boudreau, Emilie Ringe

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The internal structure of hollow AgAu nanorods created by partial galvanic replacement was manipulated reversibly, and its effect on optical properties was mapped with nanometer resolution. Using the electron beam in a scanning transmission electron microscope to create solvated electrons and reactive radicals in an encapsulated solution-filled cavity in the nanorods, Ag ions were reduced nearby the electron beam, reshaping the core of the nanoparticles without affecting the external shape. The changes in plasmon-induced near-field properties were then mapped with electron energy-loss spectroscopy without disturbing the internal structure, and the results are supported by finite-difference time-domain calculations. This reversible shape and near-field control in a hollow nanoparticle actuated by an external stimulus introduces possibilities for applications in reprogrammable sensors, responsive materials, and optical memory units. Moreover, the liquid-filled nanorod cavity offers new opportunities for in situ microscopy of chemical reactions.

Original languageEnglish
Pages (from-to)6939-6945
Number of pages7
JournalNano Letters
Volume16
Issue number11
DOIs
Publication statusPublished - Nov 9 2016

Fingerprint

Nanorods
nanorods
hollow
Tuning
tuning
Electron beams
near fields
electron beams
Nanoparticles
Optical data storage
nanoparticles
cavities
Electron energy loss spectroscopy
stimuli
Chemical reactions
chemical reactions
Microscopic examination
Electron microscopes
Optical properties
electron microscopes

Keywords

  • bimetallic nanorods
  • electron energy-loss spectroscopy (EELS)
  • galvanic replacement
  • Localized surface plasmon resonance (LSPR)
  • plasmon near-field
  • reconfigurable systems

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

Cite this

Yazdi, S., Daniel, J. R., Large, N., Schatz, G. C., Boudreau, D., & Ringe, E. (2016). Reversible Shape and Plasmon Tuning in Hollow AgAu Nanorods. Nano Letters, 16(11), 6939-6945. https://doi.org/10.1021/acs.nanolett.6b02946

Reversible Shape and Plasmon Tuning in Hollow AgAu Nanorods. / Yazdi, Sadegh; Daniel, Josée R.; Large, Nicolas; Schatz, George C; Boudreau, Denis; Ringe, Emilie.

In: Nano Letters, Vol. 16, No. 11, 09.11.2016, p. 6939-6945.

Research output: Contribution to journalArticle

Yazdi, S, Daniel, JR, Large, N, Schatz, GC, Boudreau, D & Ringe, E 2016, 'Reversible Shape and Plasmon Tuning in Hollow AgAu Nanorods', Nano Letters, vol. 16, no. 11, pp. 6939-6945. https://doi.org/10.1021/acs.nanolett.6b02946
Yazdi, Sadegh ; Daniel, Josée R. ; Large, Nicolas ; Schatz, George C ; Boudreau, Denis ; Ringe, Emilie. / Reversible Shape and Plasmon Tuning in Hollow AgAu Nanorods. In: Nano Letters. 2016 ; Vol. 16, No. 11. pp. 6939-6945.
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