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Noise considerations in field-effect biosensors
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10.1063/1.2355542
/content/aip/journal/jap/100/7/10.1063/1.2355542
http://aip.metastore.ingenta.com/content/aip/journal/jap/100/7/10.1063/1.2355542

Figures

Image of FIG. 1.
FIG. 1.

Conceptual structure of a BioFET.

Image of FIG. 2.
FIG. 2.

Equivalent circuit model for the semiconductor-insulator-electrolyte interface (Ref. 9).

Image of FIG. 3.
FIG. 3.

Equivalent circuit model for the electrode-electrolyte interface (Ref. 10).

Image of FIG. 4.
FIG. 4.

Equivalent circuit model for the semiconductor-insulator-electrolyte-electrode system.

Image of FIG. 5.
FIG. 5.

Complete equivalent circuit model for the BioFET showing the various noise contributions.

Image of FIG. 6.
FIG. 6.

Calculated BioFET low-frequency noise spectral density at at three different drain biasing points.

Image of FIG. 7.
FIG. 7.

Calculated low-frequency mean-square noise in the frequency range for a BioFET (solid line) and thermal noise from the electrolyte resistance for three different NaCl concentrations (dashed lines).

Image of FIG. 8.
FIG. 8.

Signal to low-frequency noise ratio for a BioFET as a function of the applied bias potential.

Image of FIG. 9.
FIG. 9.

Calculated low-frequency mean-square noise in the frequency range vs BioFET gate area (solid line) and thermal noise from the electrolyte resistance with a NaCl concentration (dashed line) at threshold.

Tables

Generic image for table
Table I.

Parameter values for BioFET membrane model.

Generic image for table
Table II.

Calculated values of the BioFET small-signal model elements (the values of and are for gate area).

Generic image for table
Table III.

Parameter values used in the charge sheet model.

Generic image for table
Table IV.

Parameter values for noise calculations.

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/content/aip/journal/jap/100/7/10.1063/1.2355542
2006-10-11
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Noise considerations in field-effect biosensors
http://aip.metastore.ingenta.com/content/aip/journal/jap/100/7/10.1063/1.2355542
10.1063/1.2355542
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