Patent
US 8,395,774GRAPHENE OPTICAL SENSOR
Ali Afzali
US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 8,395,774Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 illustrates an embodiment of a method of using a graphene optical sensor. [0014]
FIG. 2 illustrates an embodiment of a graphene optical sensor. [0015]
FIG. 3 illustrates an embodiment of a graphene optical sensor in transmission mode. [0016]
FIG. 4 illustrates an embodiment of a graphene optical sensor in total internal reflection (TIR) mode.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
An optical sensor, comprising: a substrate; a nd a sensing surface comprising a graphene layer located on the substrate, wherein the graphene layer is chemically modified with an analyte-specific binding substance, and an analyte located on the chemically modified graphene layer, wherein the anal yze is selected to cause a shift in an optical absorption spectrum of the chemically modified g raphene layer.
The optical sensor of claim 1, further comprising a spectrophotometer configured to determine an optical absorption spectrum for the graphene layer in a total internal reflection mode.
The optical sensor of claim 1, further comprising a spectrophotometer configured to determine an optical absorption spectrum for the graphene layer in a transmission mode.
The optical sensor of- e-aim -4 claim 1, wherein the analyte binds to the analyte-specific binding substance.
The optical sensor of -e- aim- 4 claim 1, wherein the analyte comprises one of a biomolecule and a chemical.
The optical sensor of claim 1, wherein the substrate comprises a transparent material, and wherein the optical sensor is configured to be used in a transmission mode.
The optical sensor of claim 1, wherein the substrate comprises an opaque material, and wherein the optical sensor is configured to be used in a total internal reflection mode.
canceled
, dAyerk n optical sensor, comprising: a substrate; and 2 a sensing surface comprising a graphene layer located on the substrate, wherein the graphene layer is chemically modified with an anal yt e-specific binding substance, and is doped to adjust an optical absorption spectrum of the graphene layer.
The optical sensor of claim 7, wherein the transparent material comprises one of quartz, sapphire, and glass.
A method of using an optical sensor, the optical sensor comprising a sensing surface comprising graphene layer, the sensing surface located on a substrate, the method comprising: determining a first optical absorption spectrum for the graphene layer by a spectrophotometer; adding an analyte, the analyte selected to cause a shift in the first optical absorption spectrum, to the graphene layer; determining a second optical absorption spectrum for the modified graphene layer by a spectrophotometer; determining a shift between the first optical absorption spectrum and the second optical absorption spectrum; and determining a makeup of the analyte based on the determined shift.
The method of claim 11, wherein the substrate comprises a transparent material.
The method of claim 11, wherein determining the first optical absorption spectrum and second optical absorption spectrum for the graphene layer by a spectrophotometer comprises operating the spectrophotometer in a transmission mode.
The method of claim 11, further comprising chemically modifying the graphene layer with an analyte-specific binding substance before determining the first optical absorption spectrum.
A method of making an optical sensor, the method comprising: forming a sensing surface comprising a graphene layer; transferring the graphene layer to a substrate; a nd chemically modifying the graphene layer with an analyte-specific binding substance; and doping the graphene layer to adjust an optical absorption spectrum of the graphene layer.
The method of claim 16, wherein the substrate comprises a transparent material.
The method of claim 16, wherein the analyte-specific binding substance is configured to bind to an analyte placed on the graphene layer.
canceled
Layer stacks claimed or described, ordered top of device to substrate.
graphene optical sensor
Materials described outside the worked examples.
graphene
C
analyte-specific binding substance
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Absorption Peak | 267 nm | C |
Fet Mobility |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 8,395,774Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 illustrates an embodiment of a method of using a graphene optical sensor. [0014]
FIG. 2 illustrates an embodiment of a graphene optical sensor. [0015]
FIG. 3 illustrates an embodiment of a graphene optical sensor in transmission mode. [0016]
FIG. 4 illustrates an embodiment of a graphene optical sensor in total internal reflection (TIR) mode.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
An optical sensor, comprising: a substrate; a nd a sensing surface comprising a graphene layer located on the substrate, wherein the graphene layer is chemically modified with an analyte-specific binding substance, and an analyte located on the chemically modified graphene layer, wherein the anal yze is selected to cause a shift in an optical absorption spectrum of the chemically modified g raphene layer.
The optical sensor of claim 1, further comprising a spectrophotometer configured to determine an optical absorption spectrum for the graphene layer in a total internal reflection mode.
The optical sensor of claim 1, further comprising a spectrophotometer configured to determine an optical absorption spectrum for the graphene layer in a transmission mode.
The optical sensor of- e-aim -4 claim 1, wherein the analyte binds to the analyte-specific binding substance.
The optical sensor of -e- aim- 4 claim 1, wherein the analyte comprises one of a biomolecule and a chemical.
The optical sensor of claim 1, wherein the substrate comprises a transparent material, and wherein the optical sensor is configured to be used in a transmission mode.
The optical sensor of claim 1, wherein the substrate comprises an opaque material, and wherein the optical sensor is configured to be used in a total internal reflection mode.
canceled
, dAyerk n optical sensor, comprising: a substrate; and 2 a sensing surface comprising a graphene layer located on the substrate, wherein the graphene layer is chemically modified with an anal yt e-specific binding substance, and is doped to adjust an optical absorption spectrum of the graphene layer.
The optical sensor of claim 7, wherein the transparent material comprises one of quartz, sapphire, and glass.
A method of using an optical sensor, the optical sensor comprising a sensing surface comprising graphene layer, the sensing surface located on a substrate, the method comprising: determining a first optical absorption spectrum for the graphene layer by a spectrophotometer; adding an analyte, the analyte selected to cause a shift in the first optical absorption spectrum, to the graphene layer; determining a second optical absorption spectrum for the modified graphene layer by a spectrophotometer; determining a shift between the first optical absorption spectrum and the second optical absorption spectrum; and determining a makeup of the analyte based on the determined shift.
The method of claim 11, wherein the substrate comprises a transparent material.
The method of claim 11, wherein determining the first optical absorption spectrum and second optical absorption spectrum for the graphene layer by a spectrophotometer comprises operating the spectrophotometer in a transmission mode.
The method of claim 11, further comprising chemically modifying the graphene layer with an analyte-specific binding substance before determining the first optical absorption spectrum.
A method of making an optical sensor, the method comprising: forming a sensing surface comprising a graphene layer; transferring the graphene layer to a substrate; a nd chemically modifying the graphene layer with an analyte-specific binding substance; and doping the graphene layer to adjust an optical absorption spectrum of the graphene layer.
The method of claim 16, wherein the substrate comprises a transparent material.
The method of claim 16, wherein the analyte-specific binding substance is configured to bind to an analyte placed on the graphene layer.
canceled
Layer stacks claimed or described, ordered top of device to substrate.
graphene optical sensor
Materials described outside the worked examples.
graphene
C
analyte-specific binding substance
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Absorption Peak | 267 nm | C |
Fet Mobility |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 8,395,774Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 illustrates an embodiment of a method of using a graphene optical sensor. [0014]
FIG. 2 illustrates an embodiment of a graphene optical sensor. [0015]
FIG. 3 illustrates an embodiment of a graphene optical sensor in transmission mode. [0016]
FIG. 4 illustrates an embodiment of a graphene optical sensor in total internal reflection (TIR) mode.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
An optical sensor, comprising: a substrate; a nd a sensing surface comprising a graphene layer located on the substrate, wherein the graphene layer is chemically modified with an analyte-specific binding substance, and an analyte located on the chemically modified graphene layer, wherein the anal yze is selected to cause a shift in an optical absorption spectrum of the chemically modified g raphene layer.
The optical sensor of claim 1, further comprising a spectrophotometer configured to determine an optical absorption spectrum for the graphene layer in a total internal reflection mode.
The optical sensor of claim 1, further comprising a spectrophotometer configured to determine an optical absorption spectrum for the graphene layer in a transmission mode.
The optical sensor of- e-aim -4 claim 1, wherein the analyte binds to the analyte-specific binding substance.
The optical sensor of -e- aim- 4 claim 1, wherein the analyte comprises one of a biomolecule and a chemical.
The optical sensor of claim 1, wherein the substrate comprises a transparent material, and wherein the optical sensor is configured to be used in a transmission mode.
The optical sensor of claim 1, wherein the substrate comprises an opaque material, and wherein the optical sensor is configured to be used in a total internal reflection mode.
canceled
, dAyerk n optical sensor, comprising: a substrate; and 2 a sensing surface comprising a graphene layer located on the substrate, wherein the graphene layer is chemically modified with an anal yt e-specific binding substance, and is doped to adjust an optical absorption spectrum of the graphene layer.
The optical sensor of claim 7, wherein the transparent material comprises one of quartz, sapphire, and glass.
A method of using an optical sensor, the optical sensor comprising a sensing surface comprising graphene layer, the sensing surface located on a substrate, the method comprising: determining a first optical absorption spectrum for the graphene layer by a spectrophotometer; adding an analyte, the analyte selected to cause a shift in the first optical absorption spectrum, to the graphene layer; determining a second optical absorption spectrum for the modified graphene layer by a spectrophotometer; determining a shift between the first optical absorption spectrum and the second optical absorption spectrum; and determining a makeup of the analyte based on the determined shift.
The method of claim 11, wherein the substrate comprises a transparent material.
The method of claim 11, wherein determining the first optical absorption spectrum and second optical absorption spectrum for the graphene layer by a spectrophotometer comprises operating the spectrophotometer in a transmission mode.
The method of claim 11, further comprising chemically modifying the graphene layer with an analyte-specific binding substance before determining the first optical absorption spectrum.
A method of making an optical sensor, the method comprising: forming a sensing surface comprising a graphene layer; transferring the graphene layer to a substrate; a nd chemically modifying the graphene layer with an analyte-specific binding substance; and doping the graphene layer to adjust an optical absorption spectrum of the graphene layer.
The method of claim 16, wherein the substrate comprises a transparent material.
The method of claim 16, wherein the analyte-specific binding substance is configured to bind to an analyte placed on the graphene layer.
canceled
Layer stacks claimed or described, ordered top of device to substrate.
graphene optical sensor
Materials described outside the worked examples.
graphene
C
analyte-specific binding substance
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Absorption Peak | 267 nm | C |
Fet Mobility |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 8,395,774Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 illustrates an embodiment of a method of using a graphene optical sensor. [0014]
FIG. 2 illustrates an embodiment of a graphene optical sensor. [0015]
FIG. 3 illustrates an embodiment of a graphene optical sensor in transmission mode. [0016]
FIG. 4 illustrates an embodiment of a graphene optical sensor in total internal reflection (TIR) mode.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
An optical sensor, comprising: a substrate; a nd a sensing surface comprising a graphene layer located on the substrate, wherein the graphene layer is chemically modified with an analyte-specific binding substance, and an analyte located on the chemically modified graphene layer, wherein the anal yze is selected to cause a shift in an optical absorption spectrum of the chemically modified g raphene layer.
The optical sensor of claim 1, further comprising a spectrophotometer configured to determine an optical absorption spectrum for the graphene layer in a total internal reflection mode.
The optical sensor of claim 1, further comprising a spectrophotometer configured to determine an optical absorption spectrum for the graphene layer in a transmission mode.
The optical sensor of- e-aim -4 claim 1, wherein the analyte binds to the analyte-specific binding substance.
The optical sensor of -e- aim- 4 claim 1, wherein the analyte comprises one of a biomolecule and a chemical.
The optical sensor of claim 1, wherein the substrate comprises a transparent material, and wherein the optical sensor is configured to be used in a transmission mode.
The optical sensor of claim 1, wherein the substrate comprises an opaque material, and wherein the optical sensor is configured to be used in a total internal reflection mode.
canceled
, dAyerk n optical sensor, comprising: a substrate; and 2 a sensing surface comprising a graphene layer located on the substrate, wherein the graphene layer is chemically modified with an anal yt e-specific binding substance, and is doped to adjust an optical absorption spectrum of the graphene layer.
The optical sensor of claim 7, wherein the transparent material comprises one of quartz, sapphire, and glass.
A method of using an optical sensor, the optical sensor comprising a sensing surface comprising graphene layer, the sensing surface located on a substrate, the method comprising: determining a first optical absorption spectrum for the graphene layer by a spectrophotometer; adding an analyte, the analyte selected to cause a shift in the first optical absorption spectrum, to the graphene layer; determining a second optical absorption spectrum for the modified graphene layer by a spectrophotometer; determining a shift between the first optical absorption spectrum and the second optical absorption spectrum; and determining a makeup of the analyte based on the determined shift.
The method of claim 11, wherein the substrate comprises a transparent material.
The method of claim 11, wherein determining the first optical absorption spectrum and second optical absorption spectrum for the graphene layer by a spectrophotometer comprises operating the spectrophotometer in a transmission mode.
The method of claim 11, further comprising chemically modifying the graphene layer with an analyte-specific binding substance before determining the first optical absorption spectrum.
A method of making an optical sensor, the method comprising: forming a sensing surface comprising a graphene layer; transferring the graphene layer to a substrate; a nd chemically modifying the graphene layer with an analyte-specific binding substance; and doping the graphene layer to adjust an optical absorption spectrum of the graphene layer.
The method of claim 16, wherein the substrate comprises a transparent material.
The method of claim 16, wherein the analyte-specific binding substance is configured to bind to an analyte placed on the graphene layer.
canceled
Layer stacks claimed or described, ordered top of device to substrate.
graphene optical sensor
Materials described outside the worked examples.
graphene
C
analyte-specific binding substance
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Absorption Peak | 267 nm | C |
Fet Mobility |
Related documents with shared materials, methods, properties, or citations.
transparent substrate material (quartz, sapphire, or glass)
sapphire
Al₂O₃
glass
opaque substrate material (e.g., gold or silver)
quartz
SiO₂
| >200000 cm2/V-sec |
C |
Fet Mobility | up to 15000 cm2/V-sec | C |
Thickness | ≥ 200000 cm | — |
transparent substrate material (quartz, sapphire, or glass)
sapphire
Al₂O₃
glass
opaque substrate material (e.g., gold or silver)
quartz
SiO₂
| >200000 cm2/V-sec |
C |
Fet Mobility | up to 15000 cm2/V-sec | C |
Thickness | ≥ 200000 cm | — |
transparent substrate material (quartz, sapphire, or glass)
sapphire
Al₂O₃
glass
opaque substrate material (e.g., gold or silver)
quartz
SiO₂
| >200000 cm2/V-sec |
C |
Fet Mobility | up to 15000 cm2/V-sec | C |
Thickness | ≥ 200000 cm | — |
transparent substrate material (quartz, sapphire, or glass)
sapphire
Al₂O₃
glass
opaque substrate material (e.g., gold or silver)
quartz
SiO₂
| >200000 cm2/V-sec |
C |
Fet Mobility | up to 15000 cm2/V-sec | C |
Thickness | ≥ 200000 cm | — |