Topic: iridium-oxide microelectrodes

Sensory neuroprostheses aim to restore sight or hearing through electrical microstimulation viaimplanted neural interfaces. Although there has been significant progress recently, there are stillgaps in our understanding of how to precisely target and activate specific neurons usingintracortical microstimulation. The application of advanced stimulation strategies such as currentsteering and dynamic stimulation might improve control over neuronal activity and keep thenumber of implanted electrodes reasonable. In this study, we developed flexible multi-shankprobes containing iridium-oxide microel

Neural probes made of flexible and soft materials typically have a limited shank length, restricting access to deeper brain areas. In this study, we developed single-shank polyimide-based neural probes with an ultra-long implantable shank, enabling penetration depths of several centimeters. The probes are composed of multiple components assembled using gold-gold thermocompression bonding after wafer-level fabrication, with the assembled devices exceeding a length of 300 mm. The tapered shank is approximately 200 µm wide, 15 µm thick and contains 32 linearly placed iridium-oxide microelectrodes