材料科学
热电效应
数码产品
纳米技术
可穿戴计算机
解耦(概率)
电子皮肤
计算机科学
生物医学工程
电气工程
医学
嵌入式系统
物理
控制工程
热力学
工程类
作者
Chaohui Tian,Saeed Ahmed Khan,Zhiyi Zhang,Xiaojing Cui,Hulin Zhang
出处
期刊:ACS Sensors
[American Chemical Society]
日期:2024-01-25
卷期号:9 (2): 840-848
被引量:2
标识
DOI:10.1021/acssensors.3c02172
摘要
Electronic skins (e-skins) are being extensively researched for their ability to recognize physiological data and deliver feedback via electrical signals. However, their wide range of applications is frequently restricted by the indispensableness of external power supplies and single sensory function. Here, we report a passive multimodal e-skin for real-time human health assessment based on a thermoelectric hydrogel. The hydrogel network consists of poly(vinyl alcohol)/low acyl gellan gum with [Fe(CN)6]4-/3- as the redox couple. The introduction of glycerol and Li+ furnishes the gel-based e-skin with antidrying and antifreezing properties, a thermopower of 2.04 mV K-1, fast self-healing in less than 10 min, and high conductivity of 2.56 S m-1. As a prospective application, the e-skin can actively perceive multimodal physiological signals without the need for decoupling, including body temperature, pulse rate, and sweat content, in real time by synergistically coupling sensing and transduction. This work offers a scientific basis and designs an approach to develop passive multimodal e-skins and promotes the application of wearable electronics in advanced intelligent medicine.
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