Flexible implantable bioelectrodes have the potential to advance neural sensing and muscle stimulation, especially in peripheral nerve injuries. In such cases, the application of electrical stimulation to muscles prevents muscular atrophy and helps to bridge the gap between the injured nerve and the corresponding muscle. This article investigates the fabrication and characterization of a novel, cost-effective, flexible bioelectrode, based on silicone polymer (polysiloxane) and titanium (IV) dioxide. Samples were synthesized and evaluated for their electrochemical and mechanical properties. The bioelectrodes fabricated in this article exhibited promising electrical and mechanical characteristics. The ductile properties for the samples showed an elongation of 293% ± 27.1% before breaking and an elastic modulus of 32.9 ± 5.01 kPa. The impedance at 1 kHz (a standard frequency value to measure the neural activity) was equal to 198 $\text{k}\Omega $ . The electrode’s impedance found at 7 MHz was 0.35 $\text{k}\Omega $ , thus supporting its potential to be employed in implantable electrode applications.

中文翻译：

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新型二氧化钛复合柔性电极的研制与表征

柔性植入式生物电极具有促进神经感应和肌肉刺激的潜力，尤其是在周围神经损伤中。在这种情况下，对肌肉施加电刺激可防止肌肉萎缩，并有助于弥合受伤的神经与相应肌肉之间的间隙。本文研究了基于有机硅聚合物（聚硅氧烷）和二氧化钛（IV）的新型，经济高效的柔性生物电极的制造和表征。合成样品并评估其电化学和机械性能。本文中制造的生物电极表现出令人鼓舞的电气和机械特性。样品的韧性显示出断裂前的伸长率为293％±27.1％，弹性模量为32.9±5.01 kPa。 $ \ text {k} \ Omega $ 。在7 MHz下发现的电极阻抗为0.35 $ \ text {k} \ Omega $ ，从而支持其在可植入电极应用中的潜力。