Multifunctional Flexible Ionic Skin with Dual-Modal Output Based on Fibrous Structure,ACS Applied Materials & Interfaces

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Multifunctional Flexible Ionic Skin with Dual-Modal Output Based on Fibrous Structure
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2022-11-30 , DOI: 10.1021/acsami.2c17498
Yue Zhou ₁ , Liupeng Zhao ₁ , Qisong Jia ₁ , Tianshuang Wang ₁ , Peng Sun _{1,

2} , Fangmeng Liu _{1,

2} , Xu Yan ₁ , Chenguang Wang ₁ , Yanfeng Sun ₁ , Geyu Lu _{1,

2}

Affiliation

Flexible wearable electronic devices with multiple sensing functions that simulate human skin in all aspects have become a popular research topic. However, the current expensive and time-consuming means of integration and the complex decoupling process are hampering the further development of multifunctional sensors. Here, an ultraflexible ionic fiber membrane (IFM) prepared by a simple electrospinning technique is reported, which exhibits pressure and humidity sensing properties. With the help of different electrode structures, the IFM-based multifunctional sensor achieved pressure and humidity detection with different sensing mechanisms. Pressure sensing with high sensitivity (49.7 kPa^–1 at 0–30 kPa) and wide detection range (0–220 kPa) was indicated by the capacitive signal. Humidity sensing with high linearity (1.086% per percent relative humidity (RH)) in the range 15%–90% RH was indicated by the resistance signal. In particular, the multimodal output of capacitance/resistance corresponding to pressure/humidity in this study directly addresses the problem of accurately distinguishing the two stimuli. Furthermore, we have demonstrated that the impact between pressure and humidity is negligible when measured simultaneously and independently. Because of the excellent pressure/humidity sensing performance, we have fabricated a smart bracelet and mask for pulse, skin moisture, and breathe monitoring, which indicates the promising future of multifunctional flexible sensors based on IFM in the healthcare field.

中文翻译：

基于纤维结构的双模输出多功能柔性离子皮肤

具有多种传感功能、全方位模拟人体皮肤的柔性可穿戴电子设备成为热门研究课题。然而，目前昂贵且耗时的集成手段以及复杂的解耦过程正在阻碍多功能传感器的进一步发展。在这里，报道了一种通过简单的静电纺丝技术制备的超柔性离子纤维膜 (IFM)，它具有压力和湿度传感特性。借助不同的电极结构，基于IFM的多功能传感器通过不同的传感机制实现了压力和湿度检测。具有高灵敏度的压力传感 (49.7 kPa ^–1在 0-30 kPa) 和宽检测范围 (0-220 kPa) 由电容信号指示。电阻信号指示在 15%–90% RH 范围内具有高线性度（每百分比相对湿度 (RH) 1.086%）的湿度感测。特别是，本研究中对应于压力/湿度的电容/电阻的多峰输出直接解决了准确区分两种刺激的问题。此外，我们已经证明，当同时和独立测量时，压力和湿度之间的影响可以忽略不计。由于出色的压力/湿度传感性能，我们制作了用于脉搏、皮肤水分和呼吸监测的智能手环和面罩，这预示着基于 IFM 的多功能柔性传感器在医疗保健领域的广阔前景。

更新日期：2022-11-30

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