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Voltage-gated optics and plasmonics enabled by solid-state proton pumping.

Mantao Huang¹, Aik Jun Tan¹, Felix Büttner^1,2

¹Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.

Nature Communications

|November 8, 2019

Summary

This summary is machine-generated.

Researchers developed a nanoscale solid-state proton switch for electrical control of optical properties. This innovation enables dynamic tuning of devices like displays and holography, paving the way for advanced optical technologies.

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Area of Science:

Nanotechnology
Materials Science
Optoelectronics

Background:

Tunable optical properties are crucial for advanced technologies like reflective displays and holography.
Existing hydrogen-based optical switching lacks localized and reversible electrical control.

Purpose of the Study:

To develop a nanoscale solid-state proton switch for electrical control of optical properties.
To demonstrate the versatility of electrochemical hydrogen gating for tunable optical devices.

Main Methods:

Fabrication of a nanoscale solid-state proton switch.
Electrochemical hydrogen gating for optical property modulation.
Characterization of transmittance, interference color, and plasmonic resonance.

Main Results:

Achieved electrical, localized, and reversible control of optical properties.
Demonstrated tunability of transmittance, interference color, and plasmonic resonance.
Discovered significant modulation of the gate dielectric's effective refractive index.

Conclusions:

The proton switch enables electrical control of optical properties via electrochemical hydrogen gating.
The technology allows for device scaling into the deep subwavelength regime.
Potential applications include addressable plasmonic devices and reconfigurable metamaterials.