Graphene-based implantable neural electrodes for insect flight control,Journal of Materials Chemistry B

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Graphene-based implantable neural electrodes for insect flight control
Journal of Materials Chemistry B ( IF 6.1 ) Pub Date : 2022-05-19 , DOI: 10.1039/d2tb00906d
Jian Xiong ₁ , Bin Zhang ₁ , Andrew Balilonda ₂ , Shengyuan Yang ₁ , Kerui Li ₁ , Qinghong Zhang ₃ , Yaogang Li ₃ , Hongzhi Wang ₁ , Chengyi Hou ₁

Affiliation

Implantable neural electrodes have been widely used to investigate the function of the brain and treat neurological disorders. Due to their advantages of size and preparation, fibrous neural electrodes have been widely applied, but conventional metal wire electrodes have many shortcomings that are impossible to overcome. Here, we present a modified graphene-based fiber electrode, which retains the excellent electrical properties of the graphene fiber (GF) electrode and enhances the charge storage capacity (CSC) from the initial 7.97 mC cm⁻² to 504.04 mC cm⁻². The modified electrodes were further investigated via in vivo experiments, and the results show that the modified graphene fibers controlled insect flight with a minimum voltage close to that of silver wire electrodes, and no irreversible chemical reaction occurred during the electrical stimulation process, which could achieve the stimulation effect while ensuring the safety of the tissues around the electrodes.

中文翻译：

用于昆虫飞行控制的基于石墨烯的植入式神经电极

植入式神经电极已被广泛用于研究大脑功能和治疗神经系统疾病。纤维状神经电极因其尺寸和制备上的优势得到了广泛的应用，但传统的金属丝电极存在许多无法克服的缺点。在这里，我们提出了一种改性石墨烯基纤维电极，它保留了石墨烯纤维（GF）电极的优异电性能，并将电荷存储容量（CSC）从最初的 7.97 mC cm ^-2提高到 504.04 mC cm ^-2。通过体内进一步研究修饰电极实验结果表明，改性石墨烯纤维以接近银线电极的最小电压控制昆虫飞行，并且在电刺激过程中不发生不可逆的化学反应，在保证昆虫安全的同时达到刺激效果。电极周围的组织。

更新日期：2022-05-19

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