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In a Bio-FET, the biological recognition element is one of the two main compartments.
True
The ion-sensitive field-effect transistor (ISFET) is a type of metal-gate semiconductor field-effect transistor (MOSFET).
False
A Bio-FET typically has a metal gate to allow for ion-sensitive membrane attachment.
False
The conductance of the FET channel can change when charged molecules bind to the FET gate.
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A SARS-CoV-2 biosensor based on a Bio-FET detects variations in the transistor channel due to changes in spike protein concentration.
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In a Bio-FET, the field-effect transistor part consists of an ion-sensitive membrane and a reference electrode.
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The Nyquist plot in the text represents the impedance of the electrode in the presence of an internal SAM layer and external biomolecules.
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The equivalent circuit described in the text contains five circuit elements: Solution resistance Rs, constant phase elements CPE1 and CPE2, constant resistance Re, and charge transfer resistance Rct.
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The Bio-FET is a field-effect transistor that is affected by changes in the surface potential due to the binding of molecules.
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The FET channel is not influenced by biological recognition elements in Bio-FETs.
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An ISFET stands for Ion-Sensitive Field-Effect Transistor and is commonly used in biosensor applications.
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A MOSFET biosensor is not a type of field-effect transistor-based biosensor.
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An impedance profile of Zo at low frequencies tends to that of ZW until the diffusing species has completely crossed the film.
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At decreasing frequencies, a semicircle is obtained in the impedance spectrum, indicating that the diffusing species has entered the finite length diffusing layer.
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The thicker the film, the higher the frequency at which the curvature of the impedance spectrum is observed.
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Ion-sensitive field-effect transistor (ISFET) is extensively discussed in the given text.
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The text mentions a tutorial on Electrochemical Impedance Spectroscopy by Alexandros Ch. Lazanas and Mamas I.
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Metal-oxide-semiconductor field-effect transistor (MOSFET) technology for biosensors is explained in detail in the content provided.
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