Plasmon Resonance Spectroscopy and Mode Coupling in Metallic Nanostructures Consisting of Nano Arcs or Nano Crescents
ORAL
Abstract
Using infrared spectroscopy the localized surface plasmon resonances of nanorods, nanoarcs and nanocrescents were investigated. The reflection/transmission spectra are rich with information regarding the fundamental and higher order modes, their dipole component polarization, and the impact that shape design and material design have on the frequency response. Using electron beam lithography and focused ion beam milling to control the relative position of the nanoscale objects in homodimers, heterodimers and tetramers, we have investigated the coupling of plasmons by the response of the system to near-infrared radiation. This information is utilized in the design of thin-film plasmonic metamaterials with engineered chiral and non-linear optic responses (chiroptic and NLO effects).
*This work was supported by a grant from the National Science Foundation (DMR-1151614). This research used resources of the Advanced Light Source, which is a DOE Office of Science User Facility under contract no. DE-AC02-05CH11231. We acknowledge the support of the Maryland NanoCenter and its FabLab and A
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Presenters
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Kunyi Zhang
- Materials Science and Engineering, Univ of Maryland-College Park