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Related Experiment Video

Updated: Jan 10, 2026

A Simple and Scalable Fabrication Method for Organic Electronic Devices on Textiles

A Simple and Scalable Fabrication Method for Organic Electronic Devices on Textiles

Published on: March 13, 2017

Robotic Drop-Coating Graphite-Copper PDMS Soft Pressure Sensor with Fabric-Integrated Electrodes for Wearable

Zeping Yu¹, Yunhao Zhang¹, Lingpu Ge²

¹Graduate School of Computer Science and Engineering, University of Aizu, Aizuwakamatsu 965-8580, Japan.

|November 27, 2025

Summary

A novel robotic drop-coating method fabricates advanced graphite-copper nanoparticle/Polydimethylsiloxane (PDMS) flexible pressure sensors. This scalable technique enhances conductivity and integration for wearable electronics and soft robotics.

Keywords:

PDMS composite flexible pressure sensor graphite–copper nanoparticles human–machine interaction robotic drop-coating textile-integrated electrodes wearable devices

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Last Updated: Jan 10, 2026

A Simple and Scalable Fabrication Method for Organic Electronic Devices on Textiles

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Published on: March 13, 2017

Author Spotlight: Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing

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Conformable Wearable Electrodes: From Fabrication to Electrophysiological Assessment

Conformable Wearable Electrodes: From Fabrication to Electrophysiological Assessment

Published on: July 22, 2022

Area of Science:

Materials Science
Nanotechnology
Robotics

Background:

Flexible pressure sensors are crucial for wearable tech, human-machine interfaces, and soft robotics.
Conventional Polydimethylsiloxane (PDMS)-based sensors face challenges like poor conductivity, filler dispersion, and textile integration.

Purpose of the Study:

To develop a scalable fabrication method for high-performance flexible pressure sensors.
To overcome limitations of traditional PDMS-based sensor manufacturing.

Main Methods:

Utilized a robotic drop-coating technique for precise deposition of graphite-copper nanoparticle (G-CuNP)/PDMS composites.
Fabricated a three-layer sandwiched structure with textile-integrated electrodes.
Systematically investigated filler loading and G-CuNP ratios, optimizing at 40 wt% total fillers (55 wt% graphite).

Main Results:

Achieved high sensitivity in low-pressure regions and stable performance in medium-to-high pressure ranges (R² = 0.998).
Demonstrated excellent cyclic stability (>1000 cycles) with 7.42% average hysteresis.
Successfully mapped multipoint forces using a hand-shaped sensor matrix, distinguishing grasping behaviors.

Conclusions:

Robotic drop-coating offers a scalable and advantageous approach for fabricating advanced flexible pressure sensors.
The developed G-CuNP/PDMS sensors present a promising solution for low-cost, reliable wearable applications.