Hetero-oligomer nanoparticle arrays for plasmon-enhanced hydrogen sensing

Ankun Yang, Mark D. Huntington, M. Fernanda Cardinal, Sicelo S. Masango, Richard P. Van Duyne, Teri W Odom

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

This paper describes how the ability to tune each nanoparticle in a plasmonic hetero-oligomer can optimize architectures for plasmon-enhanced applications. We demonstrate how a large-area nanofabrication approach, reconstructable mask lithography (RML), can achieve independent control over the size, position, and material of up to four nanoparticles within a subwavelength unit. We show how arrays of plasmonic hetero-oligomers consisting of strong plasmonic materials (Au) and reactant-specific elements (Pd) provide a unique platform for enhanced hydrogen gas sensing. Using finite-difference time-domain simulations, we modeled different configurations of Au-Pd hetero-oligomers and compared their hydrogen gas sensing capabilities. In agreement with calculations, we found that Au-Pd nanoparticle dimers showed a red-shift and that Au-Pd trimers with touching Au and Pd nanoparticles showed a blue-shift upon exposure to both high and low concentrations of hydrogen gas. Both Au-Pd hetero-oligomer sensors displayed high sensitivity, fast response times, and excellent recovery.

Original languageEnglish
Pages (from-to)7639-7647
Number of pages9
JournalACS Nano
Volume8
Issue number8
DOIs
Publication statusPublished - 2014

Fingerprint

oligomers
Oligomers
Hydrogen
Nanoparticles
nanoparticles
Gases
hydrogen
gases
nanofabrication
trimers
Nanotechnology
blue shift
red shift
Dimers
Lithography
Masks
low concentrations
masks
lithography
platforms

Keywords

  • Au-Pd nanoparticle dimers
  • Au-Pd nanoparticle trimers
  • heterogeneous oligomers
  • hydrogen sensing
  • nanofabrication
  • plasmonic assemblies

ASJC Scopus subject areas

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

Cite this

Yang, A., Huntington, M. D., Cardinal, M. F., Masango, S. S., Van Duyne, R. P., & Odom, T. W. (2014). Hetero-oligomer nanoparticle arrays for plasmon-enhanced hydrogen sensing. ACS Nano, 8(8), 7639-7647. https://doi.org/10.1021/nn502502r

Hetero-oligomer nanoparticle arrays for plasmon-enhanced hydrogen sensing. / Yang, Ankun; Huntington, Mark D.; Cardinal, M. Fernanda; Masango, Sicelo S.; Van Duyne, Richard P.; Odom, Teri W.

In: ACS Nano, Vol. 8, No. 8, 2014, p. 7639-7647.

Research output: Contribution to journalArticle

Yang, A, Huntington, MD, Cardinal, MF, Masango, SS, Van Duyne, RP & Odom, TW 2014, 'Hetero-oligomer nanoparticle arrays for plasmon-enhanced hydrogen sensing', ACS Nano, vol. 8, no. 8, pp. 7639-7647. https://doi.org/10.1021/nn502502r
Yang A, Huntington MD, Cardinal MF, Masango SS, Van Duyne RP, Odom TW. Hetero-oligomer nanoparticle arrays for plasmon-enhanced hydrogen sensing. ACS Nano. 2014;8(8):7639-7647. https://doi.org/10.1021/nn502502r
Yang, Ankun ; Huntington, Mark D. ; Cardinal, M. Fernanda ; Masango, Sicelo S. ; Van Duyne, Richard P. ; Odom, Teri W. / Hetero-oligomer nanoparticle arrays for plasmon-enhanced hydrogen sensing. In: ACS Nano. 2014 ; Vol. 8, No. 8. pp. 7639-7647.
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