Alternative analysis method of lumped-element circuit model for transmission lines

A design-oriented numerical study of vertical Si-nanowires to be used as sensing elements for the detection of the intracellular electrical activity of neurons. An equivalent lumped-element circuit model is derived and validated by comparison with physics-based numerical simulations. Most of the component values can be identified individually by geometrical and physical considerations. The transfer function and the SNR of the sensor in presence of thermal noise are derived, and the impact of the device geometry is shown.

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Modelling of vertical nano-needles as sensing devices for neuronal signal recordings

10.36227/techrxiv.12585086.v2 ◽

2021 ◽

Author(s):

Federico Leva ◽

Pierpaolo Palestri ◽

Luca Selmi

Keyword(s):

Transfer Function ◽

Electrical Activity ◽

Numerical Simulations ◽

Thermal Noise ◽

Numerical Study ◽

Circuit Model ◽

Si Nanowires ◽

Lumped Element ◽

Neuronal Signal ◽

The Impact

A design-oriented numerical study of vertical Si-nanowires to be used as sensing elements for the detection of the intracellular electrical activity of neurons. An equivalent lumped-element circuit model is derived and validated by comparison with physics-based numerical simulations. Most of the component values can be identified individually by geometrical and physical considerations. The transfer function and the SNR of the sensor in presence of thermal noise are derived, and the impact of the device geometry is shown.

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Resonant Characteristics of Split Ring Resonator and Unit Cell for Periodic Metamaterial Devices

Applied Computational Electromagnetics Society ◽

10.47037/2020.aces.j.351158 ◽

2021 ◽

Vol 35 (11) ◽

pp. 1378-1379

Author(s):

Brinta Chowdhury ◽

Thisara Walpita ◽

B. Yang ◽

A. Eroglu

Keyword(s):

Equivalent Circuit ◽

Ring Resonator ◽

Equivalent Circuit Model ◽

Split Ring Resonator ◽

Circuit Model ◽

Split Ring ◽

Analytical Formulation ◽

Lumped Element ◽

Ring Structures ◽

Simulation Results

The resonant characteristics of single split ring resonator-based metamaterial devices with single gap are presented using the analytical formulation developed for the lumped element equivalent circuit model. The characteristics of the metamaterial resonators have been investigated for different ring sizes, gap widths and substrate permittivity. Equivalent circuit model is developed for two ring structures. The analytical, and simulation results are compared and verified. The prototype has been then built and measured. It has been observed that all the results agree. The results presented in this paper can be used to develop devices at the THz range that can operate as sensors, antennas or tuning elements.

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