Pencil-on-Paper Humidity Sensor Treated with NaCl Solution for Health Monitoring and Skin Characterization,Nano Letters

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Pencil-on-Paper Humidity Sensor Treated with NaCl Solution for Health Monitoring and Skin Characterization
Nano Letters ( IF 9.6 ) Pub Date : 2022-12-30 , DOI: 10.1021/acs.nanolett.2c04384
Guangyu Niu ₁ , Zihan Wang ₂ , Ye Xue ₃ , Jiayi Yan ₂ , Ankan Dutta ₄ , Xue Chen ₅ , Ya Wang ₂ , Chaosai Liu ₂ , Shuaijie Du ₅ , Langang Guo ₂ , Peng Zhou ₆ , Huanyu Cheng ₄ , Li Yang _{3,

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Affiliation

Although flexible humidity sensors are essential for human health monitoring, it is still challenging to achieve high sensitivity and easy disposal with simple, low-cost fabrication processes. This study presents the design and fabrication of highly reliable hand-drawn interdigital electrodes from pencil-on-paper treated with NaCl solution for highly sensitive hydration sensors working over a wide range of relative humidity (RH) levels from 5.6% to 90%. The applications of the resulting flexible humidity sensor go beyond the monitoring of respiratory rate and proximity to characterizations of human skin types and evaluations of skin barrier functions through insensible sweat measurements. The sensor array can also be integrated with a diaper to result in smart diapers to alert for an early diaper change. The design and fabrication strategies presented in this work could also be leveraged for the development of wearable, self-powered, and recyclable sensors and actuators in the future.

中文翻译：

用 NaCl 溶液处理的纸上铅笔湿度传感器用于健康监测和皮肤表征

尽管柔性湿度传感器对于人体健康监测至关重要，但要通过简单、低成本的制造工艺实现高灵敏度和易于处理仍然具有挑战性。本研究介绍了使用经过 NaCl 溶液处理的纸上铅笔设计和制造高度可靠的手绘叉指电极，用于在 5.6% 至 90% 的广泛相对湿度 (RH) 水平范围内工作的高灵敏度水合传感器。由此产生的柔性湿度传感器的应用超出了监测呼吸频率和接近人体皮肤类型的特征以及通过无感汗液测量评估皮肤屏障功能。传感器阵列还可以与尿布集成，形成智能尿布，提醒提早换尿布。

更新日期：2022-12-30

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