Electrochemical (Molecular Electronic Transfer) Motion Sensor transducers

The Molecular Electronic Transfer Technology (MET Tech)

The basic design of the MET transducer, shown in Figure 1. The transducer is contained in a channel, 1, of a sensor filled with a specially prepared electrolytic solution. It consists of four fine platinum mesh electrodes, two anodes, 2, and two cathodes, 3, separated by thin, microporous ceramic or polymer spacers 4. Such an assembly is held together by a housing 5. To measure the motion of the fluid, it must be converted into an electrical signal. One way of achieving this is by using the convective diffusion of the ions in the electrolyte. At the heart of a MET device are inert electrodes at which a reversible redox reaction occurs, which does not involve either plating of a metal or evolution of a gas.