We conduct research towards implantable integrated circuits and systems for neuro- and bio-interfaces. While former research contributed ground-breaking designs for sub- and epiretinal implants, our recent work focusses on neural recording interfaces, efficient functional electrical stimulation, and the combination of both which is neuromodulation.
Low-power data communication, wireless powering and enhanced saftey are futher core topics of our work. Our circuits and systems are tailored together with collaboration partners for human implantation.
N. Graber: Neurobus aims to solve these issues at the core. Instead of one central unit, the recording and stimulation circuits are distributed on a large number of small implants, so called μASICs. This approach enables the recording and stimulation units close to their corresponding electrodes, reducing the wiring effort and improving the signal integrity. Due to their small size, μASICs can be directly placed on the brain tissue ... [more]
D. Fritschi: Cardiovascular disease is a major cause of death in Europe. Self-expandable implants, so-called stents, have been used in medicine for several decades to reopen narrowed blood vessels and reduce mortality from cardiovascular disease. However, this artificial device can cause e.g. in-stent restenosis due to the body's self-healing mechanism, which narrows the blood vessel again ... [more]
S. Kaltenstadler: The goal of this project is to develop an integrated chip to record, filter and digitize ciliary muscle potentials. The emphasis is on low-power, optimized silicon area, and optimized performance ... [more]
M. Sporer: Bidirectional, neural interfaces are a tool which is widely used in the study of the complex interconnections between neurons within the brain. To understand the activity of neural cells, nervous tissue is first stimulated with a current or voltage signal and afterwards its electrical activity is observed ... [more]
