Stretch-induced plasmonic anisotropy of self-assembled gold nanoparticle mats

Matthew G. Millyard, Fu Min Huang, Richard White, Elisabetta Spigone, Jani Kivioja, Jeremy J. Baumberg, Fumin Huang

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Close-packed monolayers of 20 nm Au nanoparticles are self-assembled at hexane/water interfaces and transferred to elastic substrates. Stretching the resulting nanoparticle mats provides active and reversible tuning of their plasmonic properties, with a clear polarization dependance. Both uniaxial and biaxial strains induce strong blue shifts in the plasmonic resonances. This matches theoretical simulations and indicates that plasmonic coupling at nanometer scale distances is responsible for the observed spectral tuning. Such stretch-tunable metal nanoparticle mats can be exploited for the development of optical devices, such as flexible colour filters and molecular sensors. (C) 2012 American Institute of Physics. [doi:10.1063/1.3683535]

Original languageEnglish
Article number073101
Pages (from-to)-
Number of pages3
JournalApplied Physics Letters
Issue number7
Publication statusPublished - 13 Feb 2012

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Millyard, M. G., Huang, F. M., White, R., Spigone, E., Kivioja, J., Baumberg, J. J., & Huang, F. (2012). Stretch-induced plasmonic anisotropy of self-assembled gold nanoparticle mats. Applied Physics Letters, 100(7), -. [073101].