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<p>A large-area multimodal sensor device integrating pressure, temperature, humidity, proximity, and bending sensors was developed on a stretchable and flexible substrate. The substrate combines rigid polyimide with a soft elastomer to enhance stretchability, achieving up to 127% elongation through split-line structural designs that effectively relieve stress concentration. After 1,000 stretch-release cycles at 30% strain, resistance variation remained below 0.48%, confirming excellent mechanical durability. The pressure sensors exhibited high sensitivities of 27.5&#xa0;kPa⁻¹ (8-channel array) and 9.2&#xa0;kPa⁻¹ (18-channel array) across a wide pressure range, demonstrating suitability for robotic gripper applications. The central sensing units accurately measured bending (R² = 0.998), environmental parameters, and object distance with verified functionality. Overall, the device exhibits robust, reliable, and highly stretchable multimodal sensing performance, offering strong potential for advanced robotic manipulation and environmental monitoring applications.</p> Graphical Abstract <p></p>

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Highly stretchable multimodal sensor with split-line structural design for adaptive robotic grippers

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年7月27日

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  • Chan Hwa Hong,
  • Sae Rom Seo,
  • Min-Seok Kim,
  • Young Kyu Hong,
  • Min Hyung Kang,
  • Hye Jin Kim

摘要

A large-area multimodal sensor device integrating pressure, temperature, humidity, proximity, and bending sensors was developed on a stretchable and flexible substrate. The substrate combines rigid polyimide with a soft elastomer to enhance stretchability, achieving up to 127% elongation through split-line structural designs that effectively relieve stress concentration. After 1,000 stretch-release cycles at 30% strain, resistance variation remained below 0.48%, confirming excellent mechanical durability. The pressure sensors exhibited high sensitivities of 27.5 kPa⁻¹ (8-channel array) and 9.2 kPa⁻¹ (18-channel array) across a wide pressure range, demonstrating suitability for robotic gripper applications. The central sensing units accurately measured bending (R² = 0.998), environmental parameters, and object distance with verified functionality. Overall, the device exhibits robust, reliable, and highly stretchable multimodal sensing performance, offering strong potential for advanced robotic manipulation and environmental monitoring applications.

Graphical Abstract