Detection of E.coli Cell Using Capacitance Modulation

Biosensors can be used to detect the microorganisms present in water [1], [2]. This paper presents a method to detect E.coli bacteria in water depending upon the capacitance modulation in the presence and absence of E.coli cell, which is simulated in Comsol Multiphysics (ver-3.5). Debye layer and cell wall effects [Figure 6, 7, 8] can also be observed using this method. It also presents the simulated results of change in capacitance with microorganism moving with fluid flow [Figure 9].Results show that capillary force is suffices for flow of E.Coli flow with water.