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Millivolt Modulation of Plasmonic Metasurface Optical Response via Ionic Conductance

Journal Article · · Advanced Materials
 [1];  [2];  [2];  [3]
  1. California Institute of Technology (CalTech), Pasadena, CA (United States). Thomas J. Watson Lab. of Applied Physics. Kavli Nanoscience Inst.; DOE/OSTI
  2. California Institute of Technology (CalTech), Pasadena, CA (United States). Thomas J. Watson Lab. of Applied Physics
  3. California Institute of Technology (CalTech), Pasadena, CA (United States). Thomas J. Watson Lab. of Applied Physics. Kavli Nanoscience Inst.

A plasmonic metasurface with an electrically tunable optical response that operates at strikingly low modulation voltages is experimentally demonstrated. The fabricated metasurface shows up to 30% relative change in reflectance in the visible spectral range upon application of 5 mV and 78% absolute change in reflectance upon application of 100 mV of bias. The designed metasurface consists of nanostructured silver and indium tin oxide (ITO) electrodes which are separated by 5 nm thick alumina. The millivolt-scale optical modulation is attributed to a new modulation mechanism, in which transport of silver ions through alumina dielectric leads to bias-induced nucleation and growth of silver nanoparticles in the ITO counter-electrode, altering the optical extinction response. This transport mechanism, which occurs at applied electric fields of 1 mV nm-1, provides a new approach to use of ionic transport for electrical control over light–matter interactions.

Research Organization:
California Inst. of Technology (CalTech), Pasadena, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); Air Force Office of Scientific Research (AFOSR) (United States)
Grant/Contract Number:
FG02-07ER46405
OSTI ID:
1533041
Alternate ID(s):
OSTI ID: 1375059
Journal Information:
Advanced Materials, Journal Name: Advanced Materials Journal Issue: 31 Vol. 29; ISSN 0935-9648
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

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Dynamic beam steering with all-dielectric electro-optic III–V multiple-quantum-well metasurfaces journal August 2019
Angle-Multiplexed Metasurfaces: Encoding Independent Wavefronts in a Single Metasurface under Different Illumination Angles journal December 2017
A review of dielectric optical metasurfaces for wavefront control journal June 2018
Tunable all-dielectric metasurface for phase modulation of the reflected and transmitted light via permittivity tuning of indium tin oxide journal January 2019
Toward a universal metasurface for optical imaging, communication, and computation journal August 2022
Electro-Optically Tunable Universal Metasurfaces preprint January 2019
On-Demand Reconfiguration of Nanomaterials: When Electronics Meets Ionics journal October 2017
Chromatic Dispersion Manipulation Based on Metalenses journal December 2019
Self-Assembled Nanostructured Photonic-Plasmonic Metasurfaces for High-Resolution Optical Thermometry journal May 2018
Arbitrary and Independent Polarization Control In Situ via a Single Metasurface journal August 2018
Recent Progress in Active Optical Metasurfaces journal April 2019
A broadband achromatic metalens in the visible journal January 2018
Plasmonics of Diffused Silver Nanoparticles in Silver/Nitride Optical Thin Films journal December 2019
Spatiotemporal light control with active metasurfaces journal May 2019
Tunable beam manipulation based on phase-change metasurfaces journal January 2019
Dynamically tunable and active hyperbolic metamaterials journal January 2018
When metasurface meets hologram: principle and advances journal January 2019
Graphene-based metasurfaces for switching polarization states of anomalous reflection and focusing journal January 2019

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