Micro-reaction chamber microelectrodes especially for neural and biointerfaces

摘要

Biocompatible electrodes with smaller geometric area improve the selectivity of the neural recording and stimulation applications. A volume within the electrode back plane of a micro-reaction chamber (μRC) is used to confine and sequester an electrochemical reaction used for charge passage. The μRC electrode decreases impedance and improves charge storage capacity without altering the geometry of the active site.

主权项

1. A method for manufacture of micro-reaction chamber electrodes, comprising:
providing an at least partially hollow chamber having a volume and terminating in an opening and having a high electrochemical transfer interface area to geometric surface area of the opening ratio, said at least partially hollow chamber formed at least in part within a portion of an electronic conductor wherein the electronic conductor forms one or more walls of the at least partially hollow chamber; distributing an electrochemical transfer interface throughout the at least partially hollow chamber to maximize surface area of the electrochemical transfer interface with respect to the at least partially hollow chamber; and providing a conductor in charge carrying communication with the at least partially hollow chamber via the electrochemical transfer interface.