In the Transactions on Biomedical Circuits and Systems (DOI: 10.1109/TBCAS.2021.3080398, he proposes a new chopped neural signal amplifier with offset compensated input impedance boosting.
In the Journal of Solid State Circuits (DOI: 10.1109/JSSC.2021.3076510) he shows our latest 32-channel neuromodulator featuring arbitrary stimulation waveforms, charge balancing, low noise LFP and spike recording, on-chip digitization, and many other features.