Mathematical Model of the Hydrodynamic Noise in the Electrochemical Microsystems

Бугаев, А. С.; Agafonov, Vadim M.; Shabalina, Anna

doi:10.1109/icct56057.2022.9976734

Cited by 2 publications

(1 citation statement)

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“…The measurement limit of weak signals is defined by the self-noise of the sensors. That is why a significant number of publications are devoted to the study of the self-noise of MET sensors [12,[19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Study of the Phase Relationship between Noise Cathode Currents in Electrochemical Motion Sensors to Determine the Mechanism of Self-Noise

Zhubanyshkaliyev,

Shabalina,

Agafonov

2023

Preprint

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The limits for recording weak signals for electrochemical seismic sensors are determined by their self-noise. At the same time, the noise nature is complex and not fully understood. In this work, for the first time, in addition to the frequency dependences of the noise amplitude, the difference in the phases of the noise currents of the cathodes of an electrochemical sensor has been studied. It has been established that at low frequencies the cathode currents change in an-tiphase. As the frequency increases, the phase difference becomes random. At the same time, the frequency at which the phase difference changes depend on the interelectrode distance; the clos-er the electrodes are located to each other, the greater it is. Physically, this effect is explained by the transition from noise caused by the integral flow of the working fluid to noise associated with vortex flows, the size of which depends on frequency. Thus, a new way of studying noise makes it possible to identify its physical nature and develop new methods of reduction.

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