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Modular Soft Sensor Made of Eutectogel and Its Application in Gesture Recognition.

Fengya Fan¹, Mo Deng¹, Xi Wei²

¹School of Computer Science and Technology, University of Science and Technology of China, No. 96, Jinzhai Road Baohe District, Hefei 230026, China.

|June 25, 2025

Summary

This study introduces a modular soft sensor unit (M2SU) for wearable devices. The novel design enables easy, in situ integration and high-accuracy gesture recognition for enhanced human-computer interaction.

Keywords:

gel sensor gesture recognition modular design soft wearable device stretchable sensor

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Area of Science:

Materials Science
Wearable Technology
Robotics

Background:

Soft sensors offer flexibility for wearable devices but are difficult to modify post-fabrication.
Existing wearable sensors lack modularity, hindering in situ customization and repair.

Purpose of the Study:

To develop a novel modular soft sensor unit (M2SU) for adaptable wearable sensing.
To demonstrate the M2SU's capability for high-accuracy gesture recognition in practical applications.

Main Methods:

Designed a modular soft sensor unit (M2SU) using piezoresistive eutectogel and magnetic neodymium blocks.
Integrated 8 M2SUs onto a glove for evaluating gesture recognition performance.
Utilized a 1D convolutional neural network for data analysis and classification.

Main Results:

Achieved high accuracies for gesture recognition tasks: 80.43% (Task 1), 88.58% (Task 2), and 79.87% (Task 3).
Demonstrated the M2SU's effectiveness in capturing human motion for wearable sensing.
Confirmed the feasibility of in situ assembly and reversible integration of modular sensors.

Conclusions:

The modular soft sensor unit (M2SU) design enables flexible and adaptable wearable sensing solutions.
This innovation facilitates high-accuracy gesture recognition through simple, in situ assembly.
The M2SU design holds significant potential for advancing human-computer interfaces in wearable technology.