Preprint Open Access

Modelling of vertical nano-needles as sensing devices for neuronalsignal recordings

Federico Leva; Pierpaolo Palestri; Luca Selmi

Abstract: This paper reports 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 geo- metrical 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.

Files (641.0 kB)
Views 20
Downloads 15
Data volume 9.6 MB
Unique views 12
Unique downloads 13


Cite as