[23a-1BM-1~11] 12.7 Biomedical Engineering and Biochips

11:15 AM - 11:30 AM JST(2:15 AM - 2:30 AM UTC)

[23a-1BM-9] Neural Stimulator using Photovoltaic Power and Electric Double-Layer Capacitance

〇Kazuma Tanoguchi¹, Shunsuke Takeuchi¹, Kaito Kashimura¹, Hirohito Sawahata¹ (1.Kosen, Ibaraki Col.)

Keywords:

neural stimulator,electric double-layer capacitance,semiconductor

Neurostimulation technology, which is important in neuroscience and neuromedicine, is required to be completely wireless and battery-free. Here, we propose a unique technology that converts the weak photocurrent of a photodiode (~5 μA) into large enough current pulse for neurostimulation (>100 μA) using charging and discharging by the electric double layer capacitance of the porous carbon electrode. As a result of measuring the current in electrodes in prototype circuit, pulses with a peak current of 114 μA were confirmed. Therefore, it has been demonstrated that this circuit can output sufficient current for nerve stimulation.