Food-Based Highly Sensitive Capacitive Humidity Sensors by Inkjet Printing for Human Body Monitoring,ACS Applied Electronic Materials

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Food-Based Highly Sensitive Capacitive Humidity Sensors by Inkjet Printing for Human Body Monitoring
ACS Applied Electronic Materials ( IF 4.3 ) Pub Date : 2021-08-26 , DOI: 10.1021/acsaelm.1c00570
Yukuan Shen ₁ , Shijie Hou ₁ , Dandan Hao ₁ , Xuan Zhang ₁ , Yang Lu ₁ , Guoqing Zu ₁ , Jia Huang ₁

Affiliation

Electronic sensors for human body health and activity monitoring applications still face challenges, such as nonbiodegradability and high production costs. As a kind of electronic device with noncontact characteristics, humidity sensors are playing an increasingly important role in monitoring human health. In this work, the humidity sensors were prepared by depositing edible sodium carboxymethyl cellulose (CMC) ink on a biodegradable substrate polylactic acid (PLA) via an inkjet printing technology, which not only effectively reduces the risk of pollution to the human body but also greatly reduces the production costs. The humidity sensor based on CMC has ultrahigh sensitivity (56424%), short response time (0.5 s), good cyclic stability, and exhibits excellent performances in real-time monitoring applications for human breathing and noncontact fingertip movement. Therefore, our research will contribute to the large-scale preparation of high-performance, environmental friendly, and low-cost humidity sensors, and the development of monitoring technology in human health.

中文翻译：

用于人体监测的基于食品的喷墨打印高灵敏度电容式湿度传感器

用于人体健康和活动监测应用的电子传感器仍面临挑战，例如不可生物降解性和高生产成本。作为一种具有非接触特性的电子设备，湿度传感器在监测人体健康方面发挥着越来越重要的作用。在这项工作中，通过喷墨打印技术将可食用羧甲基纤维素钠（CMC）墨水沉积在可生物降解的聚乳酸（PLA）上制备湿度传感器，不仅有效降低了对人体的污染风险，而且大大降低生产成本。基于CMC的湿度传感器具有超高灵敏度（56424%）、响应时间短（0.5s）、循环稳定性好、并在人体呼吸和非接触指尖运动的实时监测应用中表现出卓越的性能。因此，我们的研究将有助于大规模制备高性能、环保、低成本的湿度传感器，以及人类健康监测技术的发展。

更新日期：2021-09-28

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