MICRO SYSTEMS FOR BIOLOGICAL ANALYSES, THEIR USE FOR DETECTING ANALYTES AND METHOD FOR PRODUCING THEM
The invention concerns a micro system for biological analysis for detecting analytes, for example antigens, in a sample: the micro system comprises a cell (1) provided with a fixed electrode (3) and a mobile electrode (5) along the XX' axis. The electrode(s) are covered with or capable of fixing a specific ligand of the analyte to be detected, for example an antibody. After a sample has been introduced in the cell with electrodes at a removed position, for example at a distance of 2 mu m, the mobile electrode can be brought closer or can be made to oscillate between a removed position (2 mu m) and a close position (0.1 mu m) and a parameter (impedance, viscosity, contact force between the electrodes) representative of the formation of an analyte-ligand layer on the electrode(s) can be measured.