Electrochemical Sensor Design Using Coplanar and Elevated Interdigitated Array Electrodes. A Computational Study

The time dependent diffusion equation for an interdigitated array (IDA) of coplanar and elevated electrodes is solved numerically by extrapolation of the fully implicit method using a problem adapted space grid. The simulations are performed for IDA electrodes in generator‐collector mode. The influence of the electrode height and the height of the diffusion space on the sensitivity and the response time is investigated.