Modelling of Low Level Ionic Current Sensing Micro-tip

Sensing of electrical quantities e.g. current and charges at micro and nano level is a challenging task for the researchers. Most of the electrical quantities produced as a result of natural phenomenon are very small and need infinitesimally small sensors to be detected. The authors of this paper are developing an appropriate micro/nano array sensor that is capable of sensing ionic currents in sweat fluid secreted from sweat pores on the finger ridges. In this paper, we have presented the results of preliminary modelling studies of vertically aligned single ionic current sensing tip with 5μm in diameter and 10μm in height. Effect of ionic current and current density response of sensing tip is discussed.