Liquid and back gate coupling effect: toward biosensing with lowest detection limit.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 24392670.
- Also identified by DOI 10.1021/nl403748x.
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Abstract
We employ noise spectroscopy and transconductance measurements to establish the optimal regimes of operation for our fabricated silicon nanowire field-effect transistors (Si NW FETs) sensors. A strong coupling between the liquid gate and back gate (the substrate) has been revealed and used for optimization of signal-to-noise ratio in subthreshold as well as above-threshold regimes. Increasing the sensitivity of Si NW FET sensors above the detection limit has been predicted and proven by direct experimental measurements.
Medical subject headings
- Biopolymers
- Biosensing Techniques
- Conductometry
- Electrodes
- Nanowires
- Transistors, Electronic