Polarization‐Independent Thermoplasmonic Optical Filtering Using Cholesteric Liquid Crystals and Gold Nanorod Arrays
5 affiliations
- 1Department of Medico‐Surgical Sciences and Biotechnologies Sapienza University of Rome Latina Italy
- 2National Research Council of Italy Institute of Crystallography CNR‐IC Montelibretti Rome Italy
- 3BEAM Engineering for Advanced Measurements Co. Orlando Florida USA
- 4Air Force Research Laboratory Materials and Manufacturing Directorate Wright‐Patterson Air Force Base Dayton Ohio USA
- 5Department of Polymer‐Nano Science and Technology Department of NanoConvergence Engineering Jeonbuk National University Jeonju Republic of Korea
Abstract
The photothermal response of a gold nanorods array to near‐infrared irradiation is used to dynamically tune the Bragg reflection band of adjacent cholesteric liquid crystal (CLC) layers. By cascading two CLC cells with opposite handedness (right‐ and left‐handed) and with the same peak Bragg wavelength, a compact device capable of reflecting nearly 100% of unpolarized incident light is achieved. The thermoplasmonic heating enables reversible spectral tuning of the reflection band over ~80 nm in the visible range via temperature‐induced changes in birefringence and pitch. This strategy demonstrates a remotely actuated and contact‐free platform for tunable optical filters, with potential applications in smart photonic devices, optical communications, sensing, and liquid crystal displays.
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BibTeX
@article{zaccagnini2026polarizationindependent,
title = {{Polarization‐Independent Thermoplasmonic Optical Filtering Using Cholesteric Liquid Crystals and Gold Nanorod Arrays}},
author = {Federica Zaccagnini and Francesca Petronella and Nelson Tabiryan and Michael E. McConney and Jonathan Slagle and Kwang‐Un Jeong and Timothy J. Bunning and Luciano De Sio},
journal = {Advanced Photonics Research},
year = {2026},
month = oct,
doi = {10.1002/adpr.70293},
url = {https://doi.org/10.1002/adpr.70293},
note = {CC BY},
}
RIS
TY - JOUR
TI - Polarization‐Independent Thermoplasmonic Optical Filtering Using Cholesteric Liquid Crystals and Gold Nanorod Arrays
AU - Federica Zaccagnini
AU - Francesca Petronella
AU - Nelson Tabiryan
AU - Michael E. McConney
AU - Jonathan Slagle
AU - Kwang‐Un Jeong
AU - Timothy J. Bunning
AU - Luciano De Sio
PY - 2026
DA - 2026/10/25
JO - Advanced Photonics Research
DO - 10.1002/adpr.70293
UR - https://doi.org/10.1002/adpr.70293
AB - The photothermal response of a gold nanorods array to near‐infrared irradiation is used to dynamically tune the Bragg reflection band of adjacent cholesteric liquid crystal (CLC) layers. By cascading two CLC cells with opposite handedness (right‐ and left‐handed) and with the same peak Bragg wavelength, a compact device capable of reflecting nearly 100% of unpolarized incident light is achieved. The thermoplasmonic heating enables reversible spectral tuning of the reflection band over ~80 nm in the visible range via temperature‐induced changes in birefringence and pitch. This strategy demonstrates a remotely actuated and contact‐free platform for tunable optical filters, with potential applications in smart photonic devices, optical communications, sensing, and liquid crystal displays.
SN - 2699-9293
ER -