The present subject matter discloses various exemplary projective capacitive micro structured electrode arrays for measuring the impedance and action potential of living cells in particular induced pluripotent stem cells that are subsequently differentiated into cardiomyocytes and neurons. In one exemplary system a projective capacitive electrode array with cardiomyocytes attached onto the electrodes is formed and electrical measurements of live cell responses when exposed to external stimulants, such as small molecule drugs or biologically active compounds is recorded.