GRAPHENE-BASED FIELD-EFFECT TRANSISTOR BIOSENSORS

Junhong Chen

Patent

Atlas literature

Patent

US 9,676,621

GRAPHENE-BASED FIELD-EFFECT TRANSISTOR BIOSENSORS

Junhong Chen

Drawings

Patent drawings and their descriptions. Click a drawing to enlarge it.

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Claims

Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.

7 independent · 17 dependent

1
Independentreduced graphene oxide sheetAuFET-based biosensor
A ﬁeld-eﬀect transistor (FET)-based sensor, the sensor comprising: a nanostructure, nanoparticles in contact with the nanostructure, and one or more biomolecules in contact with the nanoparticles, wherein the nanostructure comprises a reduced graphene oxide sheet; and wherein the nanoparticles comprise gold.
1. 2
  Dependent← claim 1thermally-reduced graphene oxide sheetFET-based biosensor
  The FET-based sensor of claim 1, wherein the nanostructure comprises a thermally-reduced graphene oxide sheet.
2. 3
  Dependent← claim 1metal nitride/graphene nanohybrid sheetFET-based biosensor
  (Withdrawn and previously presented) The FET-based sensor of claim 1, wherein the nanostructure comprises a metal nitride/graphene nanohybrid sheet.
3. 11
  Dependent← claim 1FET-based biosensor
  The FET-based sensor of claim 1, wherein the biomolecule is selected from the group consisting of an DNA, protein, bacteria, virus, or fungi.
4. 14
  Dependent← claim 1FET-based biosensor
  The FET-based sensor of claim 1, wherein the nanoparticle is in contact with the nanostructure by non-covalent bonding. 2
5. 16
  Dependent← claim 1FET-based biosensor
  (Withdrawn and previously presented) A method of detecting a target biomolecule in a sample, the method comprising: (a) contacting the FET-based sensor of claim 1 with a sample containing or suspected of containing the target biomolecule; and (b) monitoring a change in an electrical characteristic.
6. 21
  Dependent← claim 1FET-based biosensor
  (Withdrawn and previously presented) A method of making the FET-based sensor of claim 1, the method comprising: depositing the one or more nanoparticles conjugated with the one or more proteins onto the nanostructure.
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Independent
7-10. canceled
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canceled
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canceled
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canceled
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Independentreduced graphene oxide sheetAuFET-based biosensor
A ﬁeld-eﬀect transistor (FET)-based sensor, the nanoparticles electronically coupled to the contact with the nanoparticles, wherein the sheet, and wherein the nanoparticles comprise more nanoparticles are deposited onto the force directed assembly (ES F DA) or drop-sensor comprising: a nanostructure, nanostructure, and one or more probe molecules in nanostructure comprises a reduced graphene oxide gold. 3

Device structures

Layer stacks claimed or described, ordered top of device to substrate.

FET-based biosensor

Aunanoparticle decoration

reduced graphene oxide sheetchannel

drain_electrodedrain electrode

source_electrodesource electrode

passivation_layerpassivation layer

substrate

Materials

Materials described outside the worked examples.

reduced graphene oxide sheet

Claimed Channel Material

gold nanoparticles

Claimed Nanoparticle

Reported properties

Performance values and ranges asserted in the specification or claims.

Property	Value	Material
Thickness	0.01–0.22 mM	—
Thickness

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