Screen Printed μ-ELECTRODES for Photochemical Applications

A new device, based on screen printed electrodes, was realised allowing low manufacturing costs and rapid analyses with PSII or with other biological (algae) or photochemical catalysts. The μ-electrode was cut from a PVC sheet, on whose two sides graphite and silver pastes were deposited by screen printing techniques. The biosensor was placed in a flow cell obtained by carving a light emitting diode (LED). Details on the layout of the electrode and the flow-through μ-cell are described together with preliminary results obtained by detecting H₂O₂, K₄Fe(CN)₆, Glucose and PSII activity.