Corpus ID: 118000367

Near-Field Plasmonic Behavior of Au/Pd Nanocrystals with Pd-Rich Tips

  title={Near-Field Plasmonic Behavior of Au/Pd Nanocrystals with Pd-Rich Tips},
  author={E. Ringe and C. DeSantis and S. Collins and M. Duchamp and R. E. Dunin-Borkowski and S. Skrabalak and P. Midgley},
  journal={arXiv: Plasma Physics},
  • E. Ringe, C. DeSantis, +4 authors P. Midgley
  • Published 2015
  • Physics
  • arXiv: Plasma Physics
  • Using nanometer spatial resolution electron-energy loss spectroscopy (EELS), energy dispersive X-ray spectroscopy (EDS), and cathodoluminescence (CL) mapping, we demonstrate that Au alloys containing a poor plasmonic metal (Pd) can nevertheless sustain multiple size-dependent localized surface plasmon resonances and observe strong field enhancement at Pd-rich tips, where the composition is in fact least favorable for plasmons. These Au/Pd stellated nanocrystals are also involved in substrate… CONTINUE READING