A New Low Power Instrument for Impedance Measurements in Biomedicine Based on FFT. Application to Interleukin-10 Protein Detection

We describe a low power, easy to use and portable device for measuring the electrochemical impedance of different types of biosensors. The measurement technique is based on the direct synthesis of sinusoidal signals followed by a discrete time Fourier transform analysis, carried out by an integrated electronic stage that excites and collects the response from the sample. This kind of technique provides very good signal to noise ratio, high...