期刊
ADVANCED MATERIALS TECHNOLOGIES
卷 5, 期 8, 页码 -出版社
WILEY
DOI: 10.1002/admt.202000325
关键词
bioelectronics; electromyography; high-density electromyography; Mxenes; wearable sensors
资金
- Mirowski Family Foundation
- NIH training Fellowship in Neuroengineering and Medicine [T32NS091006]
- National Science Foundation Graduate Research Fellowship Program [DGE-1845298]
- Murata Manufacturing Co., Ltd.
- NSF [ECCS-154253]
Wearable sensors for surface electromyography (EMG) are composed of single- to few-channel large-area contacts, which exhibit high interfacial impedance and require conductive gels or adhesives to record high-fidelity signals. These devices are also limited in their ability to record activation across large muscle groups due to poor spatial coverage. To address these challenges, a novel high-density EMG array is developed based on titanium carbide (Ti3C2Tx) MXene encapsulated in parylene-C. Ti(3)C(2)T(x)is a 2D nanomaterial with excellent electrical, electrochemical, and mechanical properties, which forms colloidally stable aqueous dispersions, enabling safe, scalable solutions-processing. Leveraging the excellent combination of metallic conductivity, high pseudocapacitance, and ease of processability of Ti(3)C(2)T(x)MXene, the fabrication of gel-free, high-density EMG arrays is demonstrated, which are approximate to 8 mu m thick, feature 16 recording channels, and are highly skin conformable. The impedance of Ti(3)C(2)T(x)electrodes in contact with human skin is 100-1000x lower than the impedance of commercially available electrodes which require conductive gels to be effective. Furthermore, the arrays can record high-fidelity, low-noise EMG, and can resolve muscle activation with improved spatiotemporal resolution and sensitivity compared to conventional gelled electrodes. Overall, the results establish Ti3C2Tx-based bioelectronic interfaces as a powerful platform technology for high-resolution, noninvasive wearable sensing technologies.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据