生物灵感灵活的外皮电子产品具有优越的气体透性和单向水运输能力
Boya Chen1, Zhihui Qian1,2, Guangsheng Song1
1Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China.
Nano letters
|February 27, 2025
概括
这项研究引入了一种新的仿生表皮电子设备,灵感来自于仙人掌. 它提供了卓越的透气性和水管理,为舒适的长期佩戴和增强的电肌图 (EMG) 信号采集提供了优越的透气性和水管理.
科学领域:
- 生物模拟学和材料科学 材料科学
- 可穿戴电子设备和生物传感器
- 人与机器接口 人与机器接口
背景情况:
- 外皮电子对于人机接口和可穿戴传感器至关重要.
- 在皮肤设备接口管理汗水和气体透性存在挑战,以长时间的舒适性和皮肤健康.
- 现有的设备往往会损害透气性或水管理的功能.
研究的目的:
- 开发一种仿生外皮电子设备,具有增强的气体透性和单向水运输.
- 为了提高舒适度,并防止皮肤损伤在长时间佩戴的表皮电子产品.
- 通过先进的设备设计实现高性能电动肌谱 (EMG) 信号采集.
主要方法:
- 灵活的表皮电子设备的开发灵感来自于仙人掌棘和三角体的雾收集机制.
- 设备的灵活性 (斯模量),透气性 (气体透气性) 和水运输能力 (单向和反重力) 的表征.
- 在持续出汗和长时间佩戴期间,评估设备在电肌图学 (EMG) 信号采集中的性能.
主要成果:
- 该仿生装置表现出极好的灵活性 (0.02 MPa),高透气性 (电极:3551.63 g/day-1 m/day-2,基板:3795.38 g/day-1 m/day-2),以及高效的单向 (1.09 s) 和反重力 (2.50 s) 水运输.
- 实现了出色的电肌图 (EMG) 信号采集,信号噪声比 (SNR) 大约是商业电极的58倍.
- 该设备在连续出汗5小时和长时间佩戴7天的过程中保持了性能.
结论:
- 仿生皮肤表皮电子设备有效地解决了在皮肤设备接口上的汗水和气体管理的挑战.
- 开发的设备提供卓越的舒适性,透气性和水上运输,可长时间佩戴.
- 这项技术显示出在推进高性能,可穿戴的人机界面电子产品方面具有重大潜力,特别是在EMG应用中.
相关概念视频
01:24External and Internal Respiration
External respiration occurs in the lungs, and it is the first step in the journey of oxygen inside the body. When we inhale, oxygen enters our lungs and diffuses across the thin alveolar membrane. The alveoli are tiny, air-filled sacs that provide a vast surface area for gas exchange. Oxygen in the alveoli has a higher partial pressure (105 mmHg) than in the adjacent pulmonary capillaries (40 mmHg), establishing a pressure gradient. As a result, oxygen molecules move from the alveoli into the...
01:29Electrical Transport
The electrical transport property of a material is defined by its resistance and conductivity. Resistance is the measure of a material's ability to resist the flow of electric current, while conductivity gauges its ability to allow the current to pass through, depending on the geometry of the measurement cell, such as electrode spacing and area. Conductivity is measured in Siemens (S). There are different types of conductance, including specific conductance, equivalent conductance, and molar...
01:30The Electrical Double Layer
In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...