The adoption of high-density electrode systems for human-machine interfaces in real-life applications has been impeded by practical and technical challenges, including noise interference, motion artifacts and the lack of compact electrode interfaces. To overcome some of these challenges, we introduce a wearable and stretchable electromyography (EMG) array, and present its design, fabrication methodology, characterisation, and comprehensive evaluation. Our proposed solution comprises dry-electrodes on flexible printed circuit board (PCB) substrates, eliminating the need for time-consuming skin preparation. The proposed fabrication method allows the manufacturing of stretchable sleeves, with consistent and standardised coverage across subjects. We thoroughly tested our developed prototype, evaluating its potential for application in both research and real-world environments. The results of our study showed that the developed stretchable array matches or outperforms traditional EMG grids and holds promise in furthering the real-world translation of high-density EMG for human-machine interfaces.

翻译：高密度电极系统在人机界面实际应用中的推广受到诸多实践与技术挑战的阻碍，包括噪声干扰、运动伪影以及缺乏紧凑型电极接口等问题。为克服部分难题，本文提出一种可穿戴可拉伸肌电（EMG）阵列，并系统阐述其设计、制备方法、特性表征及全面评估。所提方案采用柔性印刷电路板（PCB）基底的干式电极，无需耗时的皮肤预处理步骤。该制备方法可制造具有一致标准化覆盖范围的可拉伸套筒，适用于不同受试者。我们对该原型系统进行了充分测试，评估其在科研及实际应用环境中的潜力。研究结果表明，所开发的可拉伸阵列在性能上达到甚至超越传统EMG网格，有望推动高密度肌电技术在人机界面领域的实际应用转化。