Biomedical Engineering MSBME, American University of Sharjah, Sharjah, United Arab Emirates.
Department of Chemical Engineering, American University of Sharjah, Sharjah, United Arab Emirates.
Chemosphere. 2021 Jun;273:129680. doi: 10.1016/j.chemosphere.2021.129680. Epub 2021 Jan 18.
Implantable and stretchable electrodes have managed to progress the medical field from a medical diagnosis aspect to a patient treatment level. They offer the ability to detect biosignals and conduct electrical current to tissues that aid in muscle stimulation and axon regeneration. Current conventional electrodes are fabricated from stiff and very expensive, precious metals such as platinum. In this work, novel, low cost, and highly flexible electrode materials were fabricated based on titanium dioxide (TiO) and polymethyl methacrylate (PMMA) supported by a silicone polymer matrix. The electrode materials were characterized by their electrochemical, mechanical, and surface properties. The electrodes possessed high flexibility with Young's modulus of 235 kPa, revealing highly stretchable characteristics. The impedance at 1 kHz was around 114.6 kΩ, and the charge capacity was 1.23 mC/cm. The fabricated electrodes appeared to have a smooth surface, as seen in the scanning electron microscope micrographs, compared with electrodes in the literature. Long-time stability tests revealed an overall decrease in impedance and an increase in the charge capacity up to 475% of the initial value within three weeks.
可植入和可拉伸电极成功地将医学领域从医学诊断方面推进到了患者治疗水平。它们提供了检测生物信号和向组织传导电流的能力，有助于肌肉刺激和轴突再生。目前的传统电极由坚硬且非常昂贵的贵金属如铂制成。在这项工作中，基于二氧化钛 (TiO) 和聚甲基丙烯酸甲酯 (PMMA) 的新型低成本、高柔性电极材料由硅酮聚合物基质支撑。通过电化学、机械和表面特性对电极材料进行了表征。电极具有高弹性，杨氏模量为 235 kPa，具有高度可拉伸的特性。在 1 kHz 时的阻抗约为 114.6 kΩ，电荷容量为 1.23 mC/cm。与文献中的电极相比，扫描电子显微镜照片显示，所制备的电极表面似乎很光滑。长时间稳定性测试表明，在三周内，阻抗总体上呈下降趋势，而电荷容量则增加到初始值的 475%。
