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<p>Yarn-based strain sensors with exceptional comfort, flexibility, and scalability exhibit promising prospects for smart textiles. However, the poor dynamic structural stability and undesired strain-sensing performance have restricted their long-term application. To address this, a spiral interlacing-wrapped yarn sensor (SIWYS) has been fabricated, consisting of an oriented spandex yarn (core layer) and two spiral CNTs@Lyocell core–sheath yarns (outer layer), via scalable spinning and wrapping technology. Benefiting from its unique structure design, SIWYS demonstrates desirable electro-mechanical stability during stretching deformation, resulting in an appealing capacitance response. Therefore, the SIWYS exhibits advanced performance, including a short response time (23&#xa0;ms), excellent sensitivity (GFmax = 21.03), and durability (12,000 cycles). In addition to stably monitoring human motions for various occasions in life, the SIWYS can also be integrated into smart gloves that enable adaptive sign language interpretation aided by deep learning algorithms. It is demonstrated that our SIWYS can show great potential in human–computer interaction and soft robotics for stretchable wearable electronics.</p>

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Scalable fabrication of spiral interlacing-wrapped yarn sensor with high structural stability for motion monitoring and sign language interaction

  • 期刊论文

  • 发表日期：

    2025年12月6日

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  • Yingcun Liu,
  • Juan Li,
  • Yiming Xu,
  • Xiangxiang Liu,
  • Jian Fang

摘要

Yarn-based strain sensors with exceptional comfort, flexibility, and scalability exhibit promising prospects for smart textiles. However, the poor dynamic structural stability and undesired strain-sensing performance have restricted their long-term application. To address this, a spiral interlacing-wrapped yarn sensor (SIWYS) has been fabricated, consisting of an oriented spandex yarn (core layer) and two spiral CNTs@Lyocell core–sheath yarns (outer layer), via scalable spinning and wrapping technology. Benefiting from its unique structure design, SIWYS demonstrates desirable electro-mechanical stability during stretching deformation, resulting in an appealing capacitance response. Therefore, the SIWYS exhibits advanced performance, including a short response time (23 ms), excellent sensitivity (GFmax = 21.03), and durability (12,000 cycles). In addition to stably monitoring human motions for various occasions in life, the SIWYS can also be integrated into smart gloves that enable adaptive sign language interpretation aided by deep learning algorithms. It is demonstrated that our SIWYS can show great potential in human–computer interaction and soft robotics for stretchable wearable electronics.