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高拉伸性和导电性包裹纠联接网络,用于全碳基软生物电极

Cong Ma¹, Gongwei Tian², Yan Liu²

¹School of Mechanical Engineering, Hebei University of Technology, Xiping Road, 300401 Tianjin, China.

|May 23, 2025

概括

研究人员开发了先进的基于碳的生物电极,用于医疗监测. 这些可拉伸的电极提供卓越的导电性和耐用性,减少MRI器件,以更好地诊断神经疾病.

科学领域:

生物医学工程生物医学工程
材料科学材料科学材料科学
神经科学是一个神经科学.

背景情况:

可伸缩碳电极对于生物电子应用至关重要,如电肌图信号监测和电刺激.
现有的电极在平衡电导率和机械伸展性方面面临着挑战.
应用包括监测疾病,如肌缩侧面硬化症 (ALS) 和肌痛性硬化症 (MG).

研究的目的:

开发一种新的基于碳的可拉伸电极,具有增强的电气和机械性能.
为了评估这些电极在生物信号监测和MRI环境中的性能.
为了解决医疗应用当前碳聚合物电极的局限性.

主要方法:

在聚合物矩阵内使用多个碳纳米材料制造一个包装纠合碳网.
电导率和机械性能的表征,包括断裂时的延长和周期性耐用性.
测试符合皮肤附着的测试,多通道心电图 (ECG) 和电肌图 (EMG) 信号记录.
在鼠标模型中进行体内植入,以在9.4 T MRI 扫描仪中记录电生理信号,并将MRI 文物与电极进行比较.

主要成果:

实现了高电导率 (454.5 S/m),明显超过现有的碳聚合物电极.
在断裂时显示出异常的延长 (>3000%),远远超过典型的可拉伸碳电极 (<500%).
具有显著的耐用性,可以在20%的应变下承受超过10,000个循环,而传统电极<2500个循环.
成功记录了ECG和EMG信号,性能与Ag/AgCl电极相当.
在体内测试显示,与电极相比,成功进行了电生理学记录,并减少了MRI器件.

结论:

新的碳网电极设计克服了导电性和伸展性之间的权衡.
这些电极为生物电子应用提供了卓越的性能和耐用性.
开发的材料显示了先进的,MRI兼容的医学诊断和治疗的前景,特别是神经疾病.

关键词:

与MRI兼容的电极.碳网是碳网络中的一个.纠纠的纠是一个问题.可伸缩电子产品可伸缩电子产品包装结构的包装结构.

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