Honeycomb Spectroelectrochemical Electrodes

Our honeycomb electrode chip contains an onboard working, counter and reference electrode that have been screen-printed (using a conductive platinum or gold ink) on to a rugged ceramic substrate.  The working electrode is perforated with a honeycomb pattern of holes which allow light to pass through the electrode. The active surface of the working electrode includes a metal coating along the inner walls of the holes. As light passes through the holes, the beam grazes the walls of each hole.  Normally the path length of the electrochemically generated species is the diffusion layer near the surface of the electrode.  With our honeycomb design the effective path length is the length of the honeycomb card (1.7 mm).  As a result, molecules with low extinction coefficients are more easily detectable.