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| Hauptseite > Publikationsdatenbank > Transport Phenomena in Liquid-Gated Si Nanowire FETs for Biosensing Applications |
| Hauptseite > Publikationsdatenbank > Transport Phenomena in Liquid-Gated Si Nanowire FETs for Biosensing Applications |
| Conference Presentation (Invited) | FZJ-2015-04587 |
2015
Abstract: We review transport and noise properties of liquid-gated Si nanowire field-effect transistor structures designed and fabricated for biosensing applications, aiming to study the response at the level of a single molecule or single neuron. It is shown that the characteristic capture time of a single trap, determined from random telegraph signal noise, contains important information about surface potential changes, with enhanced sensitivity compared to standard measurements of the drain current’s dependence on the pH concentration of the solution. The gate coupling effect determined was used to improve the signal-to-noise ratio: an important characteristic to register small signals from neuronal activity.
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