Ultramicroelectrode

An ultramicroelectrode (UME) is a working electrode used in a three electrode system. The small size of UME give them relatively large diffusion layers and small overall currents. These features allow UME to achieve useful steady-state conditions and very high scan rates (V/s) with limited distortion. UME were developed independently by Wightmann and Fleischmann around 1980.