Microelectrode Fabrication by Electrochemical Turning
In this paper micro-electrochemical turning for fabricating microelectrode is presented. A stainless steel film with 50 μm thickness as turning tool is the cathode and a rotary tungsten rod for the proposed microelectrode fabrication is the anode. By applying ultra short pulses in micro seconds, dissolution of the anode can be restricted to the small region very close to the cathode. Due to rotation of the anode and movement of the cathode along the rotary axis direction, the anode uniformity corrosion was improved and its rotating concentricity was ensured simultaneously. A micro-electrode with a high aspect ration, namely 20 μm in diameter and 2500 μm in length has been fabricated in the low concentration electrolyte, 4%NaOH.
Bo Zhao, Guanglin Wang, Wei Ma, Zhibo Yang and Yanyan Yan
Y. K. Wang et al., "Microelectrode Fabrication by Electrochemical Turning", Key Engineering Materials, Vol. 455, pp. 269-273, 2011