Scholarlink

<p>Ultrasensitive detection of low-frequency and weak-pressure stimuli is crucial for non-invasive wearable physiological signal monitoring, human-machine interfaces, and sonar technologies. Hydrogels, with their low elastic modulus, high conformability, and tunable functionality, have been explored as suitable candidate materials for transduction of such signals. However, conventional hydrogel-based sensors lacking effective interfacial integration or surface engineering are often constrained by weak interfacial adhesion and microstructural fragility, resulting in compromised signal stability. Therefore, overcoming these limitations requires a robust interfacial design that can simultaneously enhance mechanical robustness and stabilize signal transmission. Here, we report a root-inspired hydrogel-electrode interface that integrates dendritic metallic nano-roots interfacial locking and monolithically fabricated microarray architectures. This nano/micro-hierarchical interface synergistically enhances sensing performance through amplified electrical double-layer capacitance, providing an ultralow detection limit of ~0.38 Pa, a gauge factor of 6.0 in the low-pressure region, reliable responses across 50-900 Hz, and stable performance. This strategy offers a versatile approach for realizing robust and ultrasensitive hydrogel-based sensors operating under weak and low-frequency stimuli.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Root-inspired hierarchical hydrogel-electrode interface enables ultrasensitive sensing

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年7月21日

查看全文
  • Jie Tang,
  • Yuan He,
  • Ruiqi Guo,
  • Qiao Hu,
  • Yuanji Yao,
  • Zicai Zhu,
  • Dayu Zhang,
  • Hongbo Wei,
  • Xinyu Li,
  • Masuki Kawamoto,
  • Sunghoon Lee,
  • Takao Someya,
  • Jian Lv,
  • Peng Li

摘要

Ultrasensitive detection of low-frequency and weak-pressure stimuli is crucial for non-invasive wearable physiological signal monitoring, human-machine interfaces, and sonar technologies. Hydrogels, with their low elastic modulus, high conformability, and tunable functionality, have been explored as suitable candidate materials for transduction of such signals. However, conventional hydrogel-based sensors lacking effective interfacial integration or surface engineering are often constrained by weak interfacial adhesion and microstructural fragility, resulting in compromised signal stability. Therefore, overcoming these limitations requires a robust interfacial design that can simultaneously enhance mechanical robustness and stabilize signal transmission. Here, we report a root-inspired hydrogel-electrode interface that integrates dendritic metallic nano-roots interfacial locking and monolithically fabricated microarray architectures. This nano/micro-hierarchical interface synergistically enhances sensing performance through amplified electrical double-layer capacitance, providing an ultralow detection limit of ~0.38 Pa, a gauge factor of 6.0 in the low-pressure region, reliable responses across 50-900 Hz, and stable performance. This strategy offers a versatile approach for realizing robust and ultrasensitive hydrogel-based sensors operating under weak and low-frequency stimuli.