Threshold-variation-enhanced adaptability of response in a nanowire field-effect transistor network

Kasai, Seiya; Miura, Kensuke; Shiratori, Yuta
May 2010
Applied Physics Letters;5/10/2010, Vol. 96 Issue 19, p194102
Academic Journal
Stochastic resonance in a summing network with varied thresholds was investigated using GaAs-based etched nanowire field-effect transistors having different threshold voltages. The network’s response adapted to input offset fluctuations in the range of the threshold voltage variation and the network could detect a weak signal without any adjustment of the input offset or the addition of high noise. The observed adaptability resulted from a widened dynamic range of the system due to signal decomposition and reconstruction by multiple thresholds together with the output summation process.


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