학술논문
Charge-injection waveforms for iridium oxide (AIROF) microelectrodes
Document Type
Conference
Source
Proceedings of the 25th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (IEEE Cat. No.03CH37439) Engineering in medicine and biology society Engineering in Medicine and Biology Society, 2003. Proceedings of the 25th Annual International Conference of the IEEE. 2:1960-1963 Vol.2 2003
Subject
Language
ISSN
1094-687X
Abstract
The charge-injection limits of activated iridium oxide (AIROF) microelectrodes subjected to charge-balanced biphasic current pulsing are investigated as a function of anodic bias and asymmetry in the cathodic and anodic pulse widths. The use of asymmetric waveforms, in which the charge balancing anodic phase is delivered at a lower current density and longer pulse width, permits the use of anodic biasing to maximize charge-injection capacity. The need for more sophisticated driving waveforms and how these could be implemented in modern ASIC design to achieve optimal charge-injection is discussed.