Needle-type multi-electrode array fabricated by MEMS technology for the hypodermic continuous glucose monitoring system

A needle-type multi-electrode array for the hypodermic continuous glucose monitoring sensor was fabricated using MEMS technology. The developed multielectrode sensor has 4 electrodes of two working(Pt) electrodes, one counter(Pt) electrode, and one reference(Ag/AgCl) electrode. Two working electrodes are for the enzyme and nonenzyme electrodes which measure glucose concentration and the background current(I₀), respectively. The developed integrated sensor system is adequate to accomplish our prereported new two-point calibration method using only one-point sample measurement. Results of in vitro performance test are also provided.