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arXiv:1506.01650 (physics)
[Submitted on 4 Jun 2015]

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

Authors:Emilie Ringe, Christopher J. DeSantis, Sean M. Collins, Martial Duchamp, Rafal E. Dunin-Borkowski, Sara E. Skrabalak, Paul A. Midgley
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Abstract: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 and interparticle coupling, as unraveled by EELS tilt series.
Subjects: Plasma Physics (physics.plasm-ph); Mesoscale and Nanoscale Physics (cond-mat.mes-hall); Materials Science (cond-mat.mtrl-sci); Optics (physics.optics)
Cite as: arXiv:1506.01650 [physics.plasm-ph]
  (or arXiv:1506.01650v1 [physics.plasm-ph] for this version)
  https://doi.org/10.48550/arXiv.1506.01650

Submission history

From: Emilie Ringe [view email]
[v1] Thu, 4 Jun 2015 16:45:22 UTC (1,574 KB)
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