Mega-electron-volt ion beam induced anisotropic plasmon resonance of silver nanocrystals in glass

J. J. Penninkhof, A. Polman, Luke A. Sweatlock, Stefan A. Maier, Harry A. Atwater, A. M. Vredenberg, B. J. Kooi

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A 30 mega-electron-volt (MeV) Si ion irradiation of BK7 glass containing Ag nanocrystals which induces a partial redistribution of the nanocrystals into linear arrays along the ion tracks was shown. The anisotropy causes a splitting in the optical extinction spectra, so that different surface plasmon resonance bands for longitudinal and transverse polarizations were observed. Resonance shifts as large as 1.5 eV were observed, well into the near-infrared and were in qualitative agreeement with a model for near-field electromagnetic plasmon coupling.

Original languageEnglish
Pages (from-to)4137-4139
Number of pages3
JournalApplied Physics Letters
Issue number20
Publication statusPublished - 17 Nov 2003
Externally publishedYes

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