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Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation
Published on: September 27, 2011
Plasmonic response of nanoscale spirals
Jed I Ziegler1, Richard F Haglund
1Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235-1807, USA. jed.i.ziegler@vanderbilt.edu
Nano Letters
|August 12, 2010
Summary
Archimedean spiral geometry enables complex plasmonic modes with unique near-field structures and larger volumes. These modes are tunable via spiral track width, spacing, and winding number, offering robust topological control.
Area of Science:
- Plasmonics
- Nanophotonics
- Metamaterials
Background:
- Archimedean spirals offer a unique geometry for manipulating light-matter interactions.
- Exploring complex plasmonic modes is crucial for advanced optical applications.
Purpose of the Study:
- To demonstrate the realization of complex plasmonic modes within Archimedean spiral structures.
- To investigate the tunability of these modes through geometric parameters.
Main Methods:
- Numerical simulations were employed to model plasmonic behavior.
- Experimental fabrication and characterization of Archimedean spiral structures were performed.
Main Results:
- Achieved complex plasmonic modes with unique near-field properties and enhanced mode volumes.
- Demonstrated that spiral track width, spacing, and winding number control polarization response, resonance, and symmetry-breaking.
Conclusions:
- Archimedean spirals provide a topologically robust platform for realizing advanced plasmonic functionalities.
- Geometric control over spiral parameters allows for precise tailoring of plasmonic modes for diverse applications.
