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A bioinspired dual-modal laser-induced graphene tactile sensor for high-precision multimodal object recognition
Gongmo Xiang1, Guozhen Zhang2, Guoning Yin1
1School of Chemistry, Beihang University, Beijing 100191, P. R. China.
Materials Horizons
|April 1, 2026
Summary
Researchers developed a novel bioinspired tactile sensor mimicking wasp antennae. This dual-modal sensor accurately identifies object shape and material type, paving the way for advanced robotics and wearable devices.
Area of Science:
- Materials Science
- Robotics
- Biomimetics
Background:
- Developing multifunctional tactile sensors for embodied perception is challenging.
- Existing sensors often lack structural simplicity and multimodal perception capabilities.
Purpose of the Study:
- To present a dual-modal bioinspired trichoid tactile sensor (BTTS) integrating piezoresistive and triboelectric effects.
- To create a hierarchical bionic architecture for enhanced tactile sensing.
Main Methods:
- Fabrication of vertically aligned rough-substrate laser-induced graphene fibers (RLIGFs) on a polyimide substrate.
- Development of a BTTS-based wireless wearable system (BWWS) for real-time signal acquisition.
- Utilizing machine learning for signal fusion and classification.
Main Results:
- The BTTS design produces distinguishable electrical signals for various object shapes and materials.
- The BWWS achieved 95.6% accuracy in simultaneously recognizing object shape and material type across eight objects.
- Demonstrated a simple structure, rapid fabrication, and low cost.
Conclusions:
- The proposed BTTS offers a promising solution for embodied perception.
- The sensor has strong potential for applications in humanoid robotics and wearable devices.
- The bioinspired design effectively integrates multimodal perception with structural simplicity.
