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Mapping plasmonic topological states at the nanoscale
Ivan S Sinev1, Ivan S Mukhin, Alexey P Slobozhanyuk
1ITMO University, St. Petersburg 197101, Russia. a.samusev@phoi.ifmo.ru.
Nanoscale
|June 26, 2015
Summary
Researchers experimentally observed topological edge states in plasmonic nanodisk chains. These states, excited by polarized light, offer new ways to control light at the nanoscale in complex structures.
Area of Science:
- Condensed Matter Physics
- Nanophotonics
- Plasmonics
Background:
- Topological states of matter offer unique properties for controlling wave phenomena.
- Plasmonic nanostructures provide a versatile platform for manipulating light at the nanoscale.
Purpose of the Study:
- To experimentally observe topological edge states in zigzag chains of plasmonic nanodisks.
- To demonstrate selective excitation and direct visualization of these edge states.
Main Methods:
- Fabrication of zigzag chains of plasmonic nanodisks.
- Excitation of edge states using linearly polarized incident light.
- Direct visualization of edge states using near-field scanning optical microscopy.
Main Results:
- First experimental observation of topological edge states in plasmonic nanodisk zigzag chains.
- Demonstration of selective excitation of edge states with specific light polarization.
- Direct visualization of the localized edge states.
Conclusions:
- Experimental verification of topological edge states in plasmonic nanostructures.
- A novel paradigm for nanoscale light manipulation using topologically nontrivial structures.
- Opens new avenues for designing advanced optical devices.
