FULLY ELECTRONIC DNA DETECTION TECHNIQUE

摘要

A low-cost set-up for DNA detection at bio-modified electrodes interfaces, based on the measurement of the electrical capacitance by means of an external system, previously employed on large surfaces, has been tested on micro-fabricated electrodes. In order to eliminate systematic errors due to parasitic elements we developed an automatic compensation procedure based both on subtraction of parasitic at open circuit and on a calibration function plotted for small capacitances(10 pF-400 pF)