Wearable, fast-healing, and self-adhesive multifunctional photoactive hydrogel for strain and temperature sensing,Journal of Materials Chemistry A

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Wearable, fast-healing, and self-adhesive multifunctional photoactive hydrogel for strain and temperature sensing
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2022-10-25 , DOI: 10.1039/d2ta06072h
He Zhu ₁ , Jing Xu _{1,

2} , Xin Sun _{1,

2} , Qikai Guo ₁ , Qinglei Guo ₁ , Mingshun Jiang ₃ , Kejun Wu ₄ , Rong Cai ₅ , Kai Qian _{1,

2}

Affiliation

It is highly desired to synchronously impart wearable, fast-healing, and self-adhesive properties in the biocompatible photoactive hydrogel sensor response to strain and temperature for different practical applications. In this work, we designed a multifunctional polyvinyl alcohol (PVA) hydrogel with poly(dopamine)-modified carbon nanotubes (PVA/d-CNTs), which possesses a high self-healing efficiency of 83.08% within 5 s and strong adhesion to different substrates. Furthermore, the PVA/d-CNT sensor realizes full-range monitoring of human motion, with a broad strain range of up to ∼300%, and exhibits an impressive thermal response in human body temperature measurement for health information collection. In addition, the PVA/d-CNT hydrogel with controllable temperature property quickly heats up to ∼85 °C in 50 s under near-infrared laser irradiation, indicating a potential application in photothermal therapy. Finally, a wireless monitoring system for human motion detection and an alarm circuit for high-temperature warning were implemented in the PVA/d-CNT hydrogel sensor, demonstrating a promising potential application in multifunctional electronic skins, artificial intelligence, and intelligent robots.

中文翻译：

用于应变和温度传感的可穿戴、快速愈合和自粘多功能光活性水凝胶

非常希望在生物相容性光活性水凝胶传感器对应变和温度的响应中同步赋予可穿戴、快速愈合和自粘特性，以用于不同的实际应用。在这项工作中，我们设计了一种具有聚（多巴胺）改性碳纳米管（PVA/d-CNTs）的多功能聚乙烯醇（PVA）水凝胶，该水凝胶在 5 s 内具有 83.08% 的高自愈效率和对不同物质的强粘附性。基板。此外，PVA/d-CNT传感器实现了对人体运动的全方位监测，应变范围高达~300%，在人体温度测量中表现出令人印象深刻的热响应，用于健康信息收集。此外，具有可控温度特性的 PVA/d-CNT 水凝胶在近红外激光照射下可在 50 秒内快速升温至 85 ℃，表明在光热疗法中的潜在应用。最后，在PVA/d-CNT水凝胶传感器中实现了人体运动检测无线监控系统和高温预警报警电路，在多功能电子皮肤、人工智能和智能机器人等领域具有广阔的应用前景。

更新日期：2022-10-25

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