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Molecular Electronic Angular Motion Transducer Broad Band Self-Noise.
Dmitry Zaitsev1, Vadim Agafonov2, Egor Egorov3
1Center for Molecular Electronics, Moscow Institute of Physics and Technology, Moscow 117303, Russia. dmitry_zaytsev@mail.ru.
Sensors (Basel, Switzerland)
|November 28, 2015
Summary
This study models self-noise in molecular electronic transfer (MET) sensors across 0.01-200 Hz. Noise originates from fluid fluctuations at low frequencies, convective processes at mid-frequencies, and electronic limitations at high frequencies.
Area of Science:
- Physics
- Electrical Engineering
- Materials Science
Background:
- Molecular electronic transfer (MET) sensors offer high performance at low cost.
- Self-noise is a critical factor limiting MET sensor applications.
- A comprehensive noise model for MET sensors across all operating frequencies is currently lacking.
Purpose of the Study:
- To experimentally investigate the self-noise of MET sensors.
- To develop a theoretical model for MET sensor noise.
- To identify the sources of self-noise across different frequency ranges.
Main Methods:
- Experimental characterization of MET sensor self-noise from 0.01 Hz to 200 Hz.
- Development of a theoretical noise model based on experimental data.
- Analysis of noise contributions from thermal hydrodynamic fluctuations, convective processes, and electronic components.
Main Results:
- Self-noise is attributed to thermal hydrodynamic fluctuations (0.01–2 Hz).
- Convective processes dominate noise in the 2–100 Hz range, showing an inverse frequency dependence.
- Electronic voltage noise and sensor impedance influence noise at high frequencies (100–200 Hz).
Conclusions:
- A novel theoretical model explains MET sensor self-noise across the full operating frequency range.
- Understanding noise sources enables targeted strategies for noise reduction.
- This research deepens the understanding of molecular electronic sensor noise mechanisms.
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