Patent
US 10,024,721GRAPHENE-BASED BOLOMETER
Kin Chung Fong
US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 10,024,721Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is conceptual diagram illustrating the operation of an infrared bolometer, according to an embodiment of the present invention; [0026]
FIG. 2 is a block diagram of an infrared bolometer according to an embodiment of the present invention; [0027]
FIG. 3E is a schematic side view of a graphene sheet sandwiched between two layers of hexagonal boron nitride, according to an embodiment of the present …
FIG. 4 is a block diagram of a Johnson noise measuring circuit according to an embodiment of the present invention; [0033]
FIG. 5 is a schematic diagram of a front end circuit according to an embodiment of the present invention; [0034]
FIG. 6B is a graph of the thermal conductance of a graphene sheet as a function of temperature according to an embodiment of the present invention. [0036]
FIG. 7A is a hybrid schematic diagram and plan view of a portion of a bolometer, according to an embodiment of the present invention; [0037]
FIG. 8B is a plan view of a portion of a bolometer, according to an embodiment of the present invention; and [0040]
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A bolometer comprising: a graphene sheet having a first pair of contacts and a second pair of contacts and being configured: to be coupled to received electromagnetic waves; to have a temperature, when electromagnetic power in the received electromagnetic waves is absorbed by the graphene sheet, corresponding to the amount of electromagnetic power absorbed by the graphene sheet; and to generate thermal noise at the first pair of contacts at a level corresponding to the temperature; and a circuit connected to the first pair of contacts, the circuit configured to measure the thermal noise level, wherein a first contact of the second pair of contacts, the graphene sheet, and a second contact of the second pair of contacts together form a part of a microstrip transmission line.
The bolometer of claim 1, wherein: a first end of the microstrip transmission line is coupled to an antenna, and: a second end of the microstrip transmission line is coupled to ground, or a portion of the microstrip transmission line, including a second end of the microstrip transmission line, forms a quarter-wave open stub connected to the graphene sheet.
A bolometer comprising: a graphene sheet having a first pair of contacts and a second pair of contacts and being configured: to be coupled to received electromagnetic waves; to have a temperature, when electromagnetic power in the received electromagnetic waves is absorbed by the graphene sheet, corresponding to the amount of electromagnetic power absorbed by the graphene sheet; and to generate thermal noise at the first pair of contacts at a level corresponding to the temperature; and a circuit connected to the first pair of contacts, the circuit configured to measure the thermal noise level, wherein each contact of the second pair of contacts is connected to a respective conductor of a pair of conductors of a log periodic antenna.
Layer stacks claimed or described, ordered top of device to substrate.
graphene bolometer with microstrip transmission line
graphene bolometer with log periodic antenna
graphene bolometer with Fabry-Perot resonator
graphene bolometer with hBN encapsulation
Materials described outside the worked examples.
graphene sheet
hexagonal boron nitride
hBN
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 1 is conceptual diagram illustrating the operation of an infrared bolometer, according to an embodiment of the present invention; [0026]
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
electron mobility of graphene sheet | ≥ 100000 | graphene sheet |
Thickness | 50–2000 nm |
Related documents with shared materials, methods, properties, or citations.
GRAPHENE SYNTHESIS CHAMBER AND METHOD OF SYNTHESIZING GRAPHENE BY USING THE SAME
METHOD OF FORMING NANOCRYSTALLINE GRAPHENE, AND DEVICE INCLUDING NANOCRYSTALLINE GRAPHENE
Patent
Atlas literature
Patent
US 10,024,721Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is conceptual diagram illustrating the operation of an infrared bolometer, according to an embodiment of the present invention; [0026]
FIG. 2 is a block diagram of an infrared bolometer according to an embodiment of the present invention; [0027]
FIG. 3E is a schematic side view of a graphene sheet sandwiched between two layers of hexagonal boron nitride, according to an embodiment of the present …
FIG. 4 is a block diagram of a Johnson noise measuring circuit according to an embodiment of the present invention; [0033]
FIG. 5 is a schematic diagram of a front end circuit according to an embodiment of the present invention; [0034]
FIG. 6B is a graph of the thermal conductance of a graphene sheet as a function of temperature according to an embodiment of the present invention. [0036]
FIG. 7A is a hybrid schematic diagram and plan view of a portion of a bolometer, according to an embodiment of the present invention; [0037]
FIG. 8B is a plan view of a portion of a bolometer, according to an embodiment of the present invention; and [0040]
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A bolometer comprising: a graphene sheet having a first pair of contacts and a second pair of contacts and being configured: to be coupled to received electromagnetic waves; to have a temperature, when electromagnetic power in the received electromagnetic waves is absorbed by the graphene sheet, corresponding to the amount of electromagnetic power absorbed by the graphene sheet; and to generate thermal noise at the first pair of contacts at a level corresponding to the temperature; and a circuit connected to the first pair of contacts, the circuit configured to measure the thermal noise level, wherein a first contact of the second pair of contacts, the graphene sheet, and a second contact of the second pair of contacts together form a part of a microstrip transmission line.
The bolometer of claim 1, wherein: a first end of the microstrip transmission line is coupled to an antenna, and: a second end of the microstrip transmission line is coupled to ground, or a portion of the microstrip transmission line, including a second end of the microstrip transmission line, forms a quarter-wave open stub connected to the graphene sheet.
A bolometer comprising: a graphene sheet having a first pair of contacts and a second pair of contacts and being configured: to be coupled to received electromagnetic waves; to have a temperature, when electromagnetic power in the received electromagnetic waves is absorbed by the graphene sheet, corresponding to the amount of electromagnetic power absorbed by the graphene sheet; and to generate thermal noise at the first pair of contacts at a level corresponding to the temperature; and a circuit connected to the first pair of contacts, the circuit configured to measure the thermal noise level, wherein each contact of the second pair of contacts is connected to a respective conductor of a pair of conductors of a log periodic antenna.
Layer stacks claimed or described, ordered top of device to substrate.
graphene bolometer with microstrip transmission line
graphene bolometer with log periodic antenna
graphene bolometer with Fabry-Perot resonator
graphene bolometer with hBN encapsulation
Materials described outside the worked examples.
graphene sheet
hexagonal boron nitride
hBN
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 1 is conceptual diagram illustrating the operation of an infrared bolometer, according to an embodiment of the present invention; [0026]
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
electron mobility of graphene sheet | ≥ 100000 | graphene sheet |
Thickness | 50–2000 nm |
Related documents with shared materials, methods, properties, or citations.
GRAPHENE SYNTHESIS CHAMBER AND METHOD OF SYNTHESIZING GRAPHENE BY USING THE SAME
METHOD OF FORMING NANOCRYSTALLINE GRAPHENE, AND DEVICE INCLUDING NANOCRYSTALLINE GRAPHENE
Patent
Atlas literature
Patent
US 10,024,721Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is conceptual diagram illustrating the operation of an infrared bolometer, according to an embodiment of the present invention; [0026]
FIG. 2 is a block diagram of an infrared bolometer according to an embodiment of the present invention; [0027]
FIG. 3E is a schematic side view of a graphene sheet sandwiched between two layers of hexagonal boron nitride, according to an embodiment of the present …
FIG. 4 is a block diagram of a Johnson noise measuring circuit according to an embodiment of the present invention; [0033]
FIG. 5 is a schematic diagram of a front end circuit according to an embodiment of the present invention; [0034]
FIG. 6B is a graph of the thermal conductance of a graphene sheet as a function of temperature according to an embodiment of the present invention. [0036]
FIG. 7A is a hybrid schematic diagram and plan view of a portion of a bolometer, according to an embodiment of the present invention; [0037]
FIG. 8B is a plan view of a portion of a bolometer, according to an embodiment of the present invention; and [0040]
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A bolometer comprising: a graphene sheet having a first pair of contacts and a second pair of contacts and being configured: to be coupled to received electromagnetic waves; to have a temperature, when electromagnetic power in the received electromagnetic waves is absorbed by the graphene sheet, corresponding to the amount of electromagnetic power absorbed by the graphene sheet; and to generate thermal noise at the first pair of contacts at a level corresponding to the temperature; and a circuit connected to the first pair of contacts, the circuit configured to measure the thermal noise level, wherein a first contact of the second pair of contacts, the graphene sheet, and a second contact of the second pair of contacts together form a part of a microstrip transmission line.
The bolometer of claim 1, wherein: a first end of the microstrip transmission line is coupled to an antenna, and: a second end of the microstrip transmission line is coupled to ground, or a portion of the microstrip transmission line, including a second end of the microstrip transmission line, forms a quarter-wave open stub connected to the graphene sheet.
A bolometer comprising: a graphene sheet having a first pair of contacts and a second pair of contacts and being configured: to be coupled to received electromagnetic waves; to have a temperature, when electromagnetic power in the received electromagnetic waves is absorbed by the graphene sheet, corresponding to the amount of electromagnetic power absorbed by the graphene sheet; and to generate thermal noise at the first pair of contacts at a level corresponding to the temperature; and a circuit connected to the first pair of contacts, the circuit configured to measure the thermal noise level, wherein each contact of the second pair of contacts is connected to a respective conductor of a pair of conductors of a log periodic antenna.
Layer stacks claimed or described, ordered top of device to substrate.
graphene bolometer with microstrip transmission line
graphene bolometer with log periodic antenna
graphene bolometer with Fabry-Perot resonator
graphene bolometer with hBN encapsulation
Materials described outside the worked examples.
graphene sheet
hexagonal boron nitride
hBN
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 1 is conceptual diagram illustrating the operation of an infrared bolometer, according to an embodiment of the present invention; [0026]
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
electron mobility of graphene sheet | ≥ 100000 | graphene sheet |
Thickness | 50–2000 nm |
Related documents with shared materials, methods, properties, or citations.
GRAPHENE SYNTHESIS CHAMBER AND METHOD OF SYNTHESIZING GRAPHENE BY USING THE SAME
METHOD OF FORMING NANOCRYSTALLINE GRAPHENE, AND DEVICE INCLUDING NANOCRYSTALLINE GRAPHENE
Patent
Atlas literature
Patent
US 10,024,721Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is conceptual diagram illustrating the operation of an infrared bolometer, according to an embodiment of the present invention; [0026]
FIG. 2 is a block diagram of an infrared bolometer according to an embodiment of the present invention; [0027]
FIG. 3E is a schematic side view of a graphene sheet sandwiched between two layers of hexagonal boron nitride, according to an embodiment of the present …
FIG. 4 is a block diagram of a Johnson noise measuring circuit according to an embodiment of the present invention; [0033]
FIG. 5 is a schematic diagram of a front end circuit according to an embodiment of the present invention; [0034]
FIG. 6B is a graph of the thermal conductance of a graphene sheet as a function of temperature according to an embodiment of the present invention. [0036]
FIG. 7A is a hybrid schematic diagram and plan view of a portion of a bolometer, according to an embodiment of the present invention; [0037]
FIG. 8B is a plan view of a portion of a bolometer, according to an embodiment of the present invention; and [0040]
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A bolometer comprising: a graphene sheet having a first pair of contacts and a second pair of contacts and being configured: to be coupled to received electromagnetic waves; to have a temperature, when electromagnetic power in the received electromagnetic waves is absorbed by the graphene sheet, corresponding to the amount of electromagnetic power absorbed by the graphene sheet; and to generate thermal noise at the first pair of contacts at a level corresponding to the temperature; and a circuit connected to the first pair of contacts, the circuit configured to measure the thermal noise level, wherein a first contact of the second pair of contacts, the graphene sheet, and a second contact of the second pair of contacts together form a part of a microstrip transmission line.
The bolometer of claim 1, wherein: a first end of the microstrip transmission line is coupled to an antenna, and: a second end of the microstrip transmission line is coupled to ground, or a portion of the microstrip transmission line, including a second end of the microstrip transmission line, forms a quarter-wave open stub connected to the graphene sheet.
A bolometer comprising: a graphene sheet having a first pair of contacts and a second pair of contacts and being configured: to be coupled to received electromagnetic waves; to have a temperature, when electromagnetic power in the received electromagnetic waves is absorbed by the graphene sheet, corresponding to the amount of electromagnetic power absorbed by the graphene sheet; and to generate thermal noise at the first pair of contacts at a level corresponding to the temperature; and a circuit connected to the first pair of contacts, the circuit configured to measure the thermal noise level, wherein each contact of the second pair of contacts is connected to a respective conductor of a pair of conductors of a log periodic antenna.
Layer stacks claimed or described, ordered top of device to substrate.
graphene bolometer with microstrip transmission line
graphene bolometer with log periodic antenna
graphene bolometer with Fabry-Perot resonator
graphene bolometer with hBN encapsulation
Materials described outside the worked examples.
graphene sheet
hexagonal boron nitride
hBN
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 1 is conceptual diagram illustrating the operation of an infrared bolometer, according to an embodiment of the present invention; [0026]
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
electron mobility of graphene sheet | ≥ 100000 | graphene sheet |
Thickness | 50–2000 nm |
Related documents with shared materials, methods, properties, or citations.
GRAPHENE SYNTHESIS CHAMBER AND METHOD OF SYNTHESIZING GRAPHENE BY USING THE SAME
METHOD OF FORMING NANOCRYSTALLINE GRAPHENE, AND DEVICE INCLUDING NANOCRYSTALLINE GRAPHENE
FIG. 2 is a block diagram of an infrared bolometer according to an embodiment of the present invention; [0027]
FIG. 6B is a graph of the thermal conductance of a graphene sheet as a function of temperature according to an embodiment of the present invention. [0036]
FIG. 6B is a graph of the thermal conductance of a graphene sheet as a function of temperature according to an embodiment of the present invention. [0036]
FIG. 6B is a graph of the thermal conductance of a graphene sheet as a function of temperature according to an embodiment of the present invention. [0036]
| — |
Thickness | 100–1000 nm | — |
Thickness | 4–40 nm | — |
Duration | 10–15 minutes | — |
Thickness | 1–100 µm | — |
Thickness | ≤ 2 µm | — |
Temperature | ≤ 4 K | — |
Thickness | ≥ 50 nm | — |
Thickness | ≤ 20 µm | — |
Thickness | ≤ 40 nm | — |
Thickness | ≥ 100000 cm | — |
Thickness | ≥ 4 nm | — |
FIG. 2 is a block diagram of an infrared bolometer according to an embodiment of the present invention; [0027]
FIG. 6B is a graph of the thermal conductance of a graphene sheet as a function of temperature according to an embodiment of the present invention. [0036]
FIG. 6B is a graph of the thermal conductance of a graphene sheet as a function of temperature according to an embodiment of the present invention. [0036]
FIG. 6B is a graph of the thermal conductance of a graphene sheet as a function of temperature according to an embodiment of the present invention. [0036]
| — |
Thickness | 100–1000 nm | — |
Thickness | 4–40 nm | — |
Duration | 10–15 minutes | — |
Thickness | 1–100 µm | — |
Thickness | ≤ 2 µm | — |
Temperature | ≤ 4 K | — |
Thickness | ≥ 50 nm | — |
Thickness | ≤ 20 µm | — |
Thickness | ≤ 40 nm | — |
Thickness | ≥ 100000 cm | — |
Thickness | ≥ 4 nm | — |
FIG. 2 is a block diagram of an infrared bolometer according to an embodiment of the present invention; [0027]
FIG. 6B is a graph of the thermal conductance of a graphene sheet as a function of temperature according to an embodiment of the present invention. [0036]
FIG. 6B is a graph of the thermal conductance of a graphene sheet as a function of temperature according to an embodiment of the present invention. [0036]
FIG. 6B is a graph of the thermal conductance of a graphene sheet as a function of temperature according to an embodiment of the present invention. [0036]
| — |
Thickness | 100–1000 nm | — |
Thickness | 4–40 nm | — |
Duration | 10–15 minutes | — |
Thickness | 1–100 µm | — |
Thickness | ≤ 2 µm | — |
Temperature | ≤ 4 K | — |
Thickness | ≥ 50 nm | — |
Thickness | ≤ 20 µm | — |
Thickness | ≤ 40 nm | — |
Thickness | ≥ 100000 cm | — |
Thickness | ≥ 4 nm | — |
FIG. 2 is a block diagram of an infrared bolometer according to an embodiment of the present invention; [0027]
FIG. 6B is a graph of the thermal conductance of a graphene sheet as a function of temperature according to an embodiment of the present invention. [0036]
FIG. 6B is a graph of the thermal conductance of a graphene sheet as a function of temperature according to an embodiment of the present invention. [0036]
FIG. 6B is a graph of the thermal conductance of a graphene sheet as a function of temperature according to an embodiment of the present invention. [0036]
| — |
Thickness | 100–1000 nm | — |
Thickness | 4–40 nm | — |
Duration | 10–15 minutes | — |
Thickness | 1–100 µm | — |
Thickness | ≤ 2 µm | — |
Temperature | ≤ 4 K | — |
Thickness | ≥ 50 nm | — |
Thickness | ≤ 20 µm | — |
Thickness | ≤ 40 nm | — |
Thickness | ≥ 100000 cm | — |
Thickness | ≥ 4 nm | — |