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Related Experiment Video

Updated: Jan 29, 2026

Fabrication of Surface Acoustic Wave Devices on Lithium Niobate

Fabrication of Surface Acoustic Wave Devices on Lithium Niobate

Published on: June 18, 2020

Megahertz-wave-transmitting conducting polymer electrode for device-to-device integration.

Taehoon Kim^1,2, Gwangmook Kim^1,2, Hyeohn Kim¹

¹Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, Korea.

Nature Communications

|February 10, 2019

Summary

Researchers developed a transparent conductor for radiofrequencies using a conducting polymer. This breakthrough enables advanced device integration and new applications like MRI-compatible monitors.

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Area of Science:

Materials Science
Electrical Engineering
Physics

Background:

Achieving high optical transparency and electrical conductivity simultaneously, especially at radiofrequencies (kHz to hundreds of GHz), is a significant challenge.
This incompatibility hinders the development of advanced user interfaces and seamless device-to-device integration.

Purpose of the Study:

To present a novel design strategy for creating transparent conductors operating efficiently at megahertz (MHz) frequencies.
To overcome the limitations of current transparent conductors for enhanced device integration via electromagnetic wave transmittance.

Main Methods:

A design strategy was developed to control plasma frequency via electrical conductivity.
The conducting polymer poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) was used and its microstructure manipulated via a solution process.
The approach was experimentally verified using the modified PEDOT:PSS.

Main Results:

A transparent conductor capable of operating at MHz frequencies was successfully prepared.
The electrical conductivity was tuned to achieve the desired plasma frequency for transparency at lower frequencies.
The conducting polymer electrodes enabled the fabrication of functional devices.

Conclusions:

The developed strategy offers a new pathway for creating transparent conductors with tailored properties.
This advancement facilitates device-to-device integration through electromagnetic wave transmittance.
Applications include fully functional touch displays and magnetic resonance imaging (MRI)-compatible biomedical devices, heralding a new era for transparent conductor technology.