The study and characterization of bacteria is nowdays drawing increasing interest among the scientific community. With the use of Impedance Flow Cytometry and Electrical Impedance Spectroscopy is possible to perform detailed analysis on shape, size and compositional properties of bacteria. In the present project, these techniques are intended to be employed in a biosensing device in combination with a customized microfluidic channel, designed with the ambition of trapping single bacteria by exploiting its own geometry. The trap mechanism is first developed and simulated by the means of the finite element method software COMSOL, highlighting the challenges associated with the single bacterium immobilization.