Dependence of Self-Noise of the Angular Motion Sensor Based on the Technology of Molecular-Electronic Transfer, on the Area of the Electrodes

In seismic applications, molecular-electronic transfer (MET) sensors are considered to be among the most promising instruments for the measurement of seismic-associated signals. The subject of the presented study is the MET angular motion sensor self-noise dependence on the area of the electrodes of the electrochemical signal converting cell. Sensors with a different area of the signal conditional cell electrodes have been produced, and their self-noise at frequencies <100 Hz has been studied. The results show that sensors with a larger area of electrodes have lower self-noise at low frequencies and larger self-noise at high frequencies, which agrees with the assumption that uncorrelated small-scale hydrodynamic velocity fluctuations are responsible for the sensors convective noise. The results of the study allowed us to refine the MET sensors self-noise model and refined and revealed the directions of further improvement of the MET angular sensors performance.