Journal Article

FZJ-2020-02508

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Noise suppression beyond the thermal limit with nanotransistor biosensors

Kutovyi, Y.FZJ* ; Madrid, I. ; Zadorozhnyi, I.FZJ* ; Boichuk, N.FZJ* ; Kim, S. H. ; Fujii, T. ; Jalabert, L. ; Offenhäusser, A.FZJ* ; Vitusevich, S. (Corresponding author)FZJ* ; Clément, N. (Corresponding author)

2020
Macmillan Publishers Limited, part of Springer Nature [London]

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Please use a persistent id in citations: http://hdl.handle.net/2128/25763  doi:10.1038/s41598-020-69493-y

Abstract: Transistor biosensors are mass-fabrication-compatible devices of interest for point of care diagnosis as well as molecular interaction studies. While the actual transistor gates in processors reach the sub-10 nm range for optimum integration and power consumption, studies on design rules for the signal-to-noise ratio (S/N) optimization in transistor-based biosensors have been so far restricted to 1 µm2 device gate area, a range where the discrete nature of the defects can be neglected. In this study, which combines experiments and theoretical analysis at both numerical and analytical levels, we extend such investigation to the nanometer range and highlight the effect of doping type as well as the noise suppression opportunities offered at this scale. In particular, we show that, when a single trap is active near the conductive channel, the noise can be suppressed even beyond the thermal limit by monitoring the trap occupancy probability in an approach analog to the stochastic resonance effect used in biological systems.

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Contributing Institute(s):

1. Bioelektronik (IBI-3)

Research Program(s):

1. 523 - Controlling Configuration-Based Phenomena (POF3-523) (POF3-523)

Appears in the scientific report 2020

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