FIELD EFFECT TRANSISTOR, BIOSENSOR PROVIDED WITH IT, AND DETECTING METHOD
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Accused Products
Abstract
A high-sensitivity field effect transistor using as a channel ultrafine fiber elements such as carbon nanotube, and a biosensor using it. The field effect transistor comprises a substrate, a source electrode and a drain electrode arranged on the substrate, a channel for electrically connecting the source electrode with the drain electrode, and a gate electrode causing polarization due to the movement of free electrons in the substrate. For example, the substrate has a support substrate consisting of semiconductor or metal, a first insulating film formed on a first surface of the support substrate, and a second insulating film formed on a second surface of the support substrate, the source electrode, the drain electrode, and the channel arranged on the first insulating film, the gate electrode disposed on the second insulating film.
285 Citations
22 Claims
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1-18. -18. (canceled)
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19. A biosensor device comprising a biosensor device body and a element section which is attachable to and detachable from the biosensor device body, wherein the biosensor device includes a field effect transistor comprising:
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a substrate, a source electrode and a drain electrode disposed on the substrate, a channel electrically connecting the source electrode and the drain electrode and including an ultra fine fiber, a gate electrode capable of causing polarization due to movement of free electrons in the substrate and capable of controlling electric current flowing through the channel, and molecules immobilized on the field effect transistor and capable of capturing a detection target substance; and wherein the element section comprises the gate electrode and the molecules; wherein when the element section is mounted to the biosensor device body, electric current flows through the channel, and the gate electrode controls the electric current flowing through the channel. - View Dependent Claims (20, 21, 22)
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Specification