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Related Experiment Video

Updated: May 19, 2026

Fabrication and Characterization of Superconducting Resonators

Fabrication and Characterization of Superconducting Resonators

Published on: May 21, 2016

A plasmonic Fano switch.

Wei-Shun Chang¹, J Britt Lassiter, Pattanawit Swanglap

¹Department of Chemistry, Laboratory for Nanophotonics, Rice University, Houston, Texas 77005, United States.

|August 29, 2012

Summary

This summary is machine-generated.

Researchers demonstrate plasmonic clusters with tunable Fano resonances. By altering nanodisk geometry and using a liquid crystal device, they achieved voltage-controlled switching of Fano-like and non-Fano-like spectra, enabling optical on/off functionality.

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Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation

Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation

Published on: September 27, 2011

Area of Science:

* Physics, Materials Science, Nanotechnology
* Focus on plasmonics and nanophotonics

Background:

* Plasmonic clusters exhibit Fano resonances, sensitive to geometric configurations.
* Fano resonances offer potential for sharp spectral features and switching applications.

Purpose of the Study:

* To investigate Fano resonance control in plasmonic clusters via geometry.
* To develop a voltage-controlled optical switch using plasmonic nanostructures and liquid crystals.

Main Methods:

* Fabrication of plasmonic clusters with a hemicircular disk and coupled nanodisks.
* Integration of the plasmonic structure into a liquid crystal device.
* Spectroscopic analysis under varying polarization and applied voltage.

Main Results:

* Plasmonic clusters exhibited Fano-like and non-Fano-like spectra dependent on incident polarization.
* The liquid crystal device enabled voltage-controlled switching between spectral states.
* A reversible transition was achieved at low voltages (around 6 V), switching transparency.

Conclusions:

* Cluster geometry dictates Fano resonance characteristics.
* A novel liquid crystal device offers voltage-tunable optical switching of plasmonic Fano resonances.
* This demonstrates a low-voltage, on/off switch for transparency windows.