Patent
US 10,522,628A multilayer graphene composite
HAQUE, Samiul Md, COLLI, Alan
NOKIA TECHNOLOGIES OY·28 April 2016·US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 10,522,628Patent drawings and their descriptions. Click a drawing to enlarge it.
Figure 1 shows a conventional field-effect transistor (cross-section);
Figure 2 shows a field-effect transistor comprising an ionic liquid gate dielectric (cross- section);
Figure 3 shows the typical charge distribution within a multilayer graphene channel separated from a gate electrode by an ionic liquid (cross-section); Figure 4a shows an apparatus comprising a multilayer graphene composite according to one embodiment of the present disclosure (cross-section); …
Figure 5 illustrates the Pauli blocking phenomenon; Figure 6a shows an apparatus comprising a multilayer graphene composite according to another embodiment of the present disclosure (cross-section); Figure 6b shows the apparatus of Figure 6a when a gate voltage is applied to the gate electrode; …
Figure 8 shows an apparatus comprising a multilayer graphene composite according to another embodiment of the present disclosure (schematic);
Figure 9 shows an apparatus comprising a multilayer graphene composite according to another embodiment of the present disclosure (schematic);
Figure 10 shows the main steps of a method of making an apparatus described herein;
Figure 11 shows the main steps of a method of using an apparatus described herein; and
Figure 12 shows a computer-readable medium comprising a computer program configured to perform, control or enable one or more of the method steps of
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
1-15. Canceled
Canceled
A multilayer graphene composite comprising a plurality of stacked graphene layers separated from one another by an ion gel, wherein the ion gel is intercalated between adjacent grap h ene layers such that ions within the ion gel are able to arrange themselves at the surfaces of the graphene layers to cause a detectable change in one or more of an electrical and optical property of the graphene layers when a gate voltage is applied to a gate electrode in proximity to the ion gel. Previously presented
The m ultilayer graphene composite of claim 16, wherein the graphene layers of the stack are in the form of one or more of a graphite crystal, single layers of graphene, and a percolation network of graphene flakes. Previously presented
An apparatus comprising the multilayer graphene composite of claim 16, and a gate electrode in proximity to the ion gel configured to cause a detectable change in the transparency of the graphene layers, and switch between an opaque state, and a transparent state. Previously presented
27-29. Canceled
Canceled
An apparatus, comprising: a plurality of stacked graphene layers separated from one another by an ion gel, wherein the ion gel is intercalated between adjacent graphene layers; and a gate electrode in proximity to the ion gel and capacitively coupled to the graphene layers, the gate electrode configured to cause a detectable change in the transparency of the graphene layers by switching the graphene layers between an opaque state and a transparent state; wherein ions within the ion gel are able to arrange themselves at the surfaces of the graphene layers to cause the detectable change in the transparency of the graphene layers when a gate voltage is applied to the gate electrode. Previously presented
An apparatus, comprising: a plurality of stacked graphene layers separated from one another by an ion gel, wherein the ion gel is intercalated between adjacent graphene layers; a gate electrode in proximity to the ion gel and configured to cause a detectable change in the graphene layers, the gate electrode comprising one or more of pores and protrusions configured to increase a surface area of the gate electrode; wherein ions within the ion gel are able to arrange themselves at the surfaces of the graphene layers to cause the detectable change in one or more of an electrical and optical property of the graphene layers when a gate voltage is applied to the gate electrode. Previously presented
(Newly Added) A method comprising: forming a multilayer graphene composite comprising a plurality of stacked graphene layers separated from one another by an ion gel, wherein the ion gel is intercalated between adjacent graphene layers such that ions within the ion gel are able to arrange themselves at the surfaces of the graphene layers to cause a detectable change in one or more of an electrical and optical property of the graphene layers when a gate voltage is applied to a gate electrode in proximity to the ion gel. New
(Newly Added) The method of claim 32, wherein forming the multilayer graphene composite comprises one of mixing graphene ink with an ion gel to produce a solution-processable composite usable to print the m ultilayer graphene composite, and the repeated and sequential deposition of a graphene layer followed by an ion gel layer. New
(Newly Added) A method comprising: applying a gate voltage to a gate electrode in proximity to an ion gel of a multilayer graphene composite, the multilayer graphene composite comprising a plurality of stacked graphene layers separated from one another by the ion gel, wherein the ion gel is intercalated between adjacent graphene layers such that ions within the ion gel are able to arrange themselves at the surfaces of the graphene layers to cause a detectable change in one or more of an electrical and optical property of the graphene layers when the gate voltage is applied to the gate electrode. New
Layer stacks claimed or described, ordered top of device to substrate.
multilayer graphene composite
ion gel-gated multilayer graphene apparatus
Materials described outside the worked examples.
graphene
ion gel
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
Figure 1 shows a conventional field-effect transistor (cross-section);
Patent
Atlas literature
Patent
US 10,522,628Patent drawings and their descriptions. Click a drawing to enlarge it.
Figure 1 shows a conventional field-effect transistor (cross-section);
Figure 2 shows a field-effect transistor comprising an ionic liquid gate dielectric (cross- section);
Figure 3 shows the typical charge distribution within a multilayer graphene channel separated from a gate electrode by an ionic liquid (cross-section); Figure 4a shows an apparatus comprising a multilayer graphene composite according to one embodiment of the present disclosure (cross-section); …
Figure 5 illustrates the Pauli blocking phenomenon; Figure 6a shows an apparatus comprising a multilayer graphene composite according to another embodiment of the present disclosure (cross-section); Figure 6b shows the apparatus of Figure 6a when a gate voltage is applied to the gate electrode; …
Figure 8 shows an apparatus comprising a multilayer graphene composite according to another embodiment of the present disclosure (schematic);
Figure 9 shows an apparatus comprising a multilayer graphene composite according to another embodiment of the present disclosure (schematic);
Figure 10 shows the main steps of a method of making an apparatus described herein;
Figure 11 shows the main steps of a method of using an apparatus described herein; and
Figure 12 shows a computer-readable medium comprising a computer program configured to perform, control or enable one or more of the method steps of
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
1-15. Canceled
Canceled
A multilayer graphene composite comprising a plurality of stacked graphene layers separated from one another by an ion gel, wherein the ion gel is intercalated between adjacent grap h ene layers such that ions within the ion gel are able to arrange themselves at the surfaces of the graphene layers to cause a detectable change in one or more of an electrical and optical property of the graphene layers when a gate voltage is applied to a gate electrode in proximity to the ion gel. Previously presented
The m ultilayer graphene composite of claim 16, wherein the graphene layers of the stack are in the form of one or more of a graphite crystal, single layers of graphene, and a percolation network of graphene flakes. Previously presented
An apparatus comprising the multilayer graphene composite of claim 16, and a gate electrode in proximity to the ion gel configured to cause a detectable change in the transparency of the graphene layers, and switch between an opaque state, and a transparent state. Previously presented
27-29. Canceled
Canceled
An apparatus, comprising: a plurality of stacked graphene layers separated from one another by an ion gel, wherein the ion gel is intercalated between adjacent graphene layers; and a gate electrode in proximity to the ion gel and capacitively coupled to the graphene layers, the gate electrode configured to cause a detectable change in the transparency of the graphene layers by switching the graphene layers between an opaque state and a transparent state; wherein ions within the ion gel are able to arrange themselves at the surfaces of the graphene layers to cause the detectable change in the transparency of the graphene layers when a gate voltage is applied to the gate electrode. Previously presented
An apparatus, comprising: a plurality of stacked graphene layers separated from one another by an ion gel, wherein the ion gel is intercalated between adjacent graphene layers; a gate electrode in proximity to the ion gel and configured to cause a detectable change in the graphene layers, the gate electrode comprising one or more of pores and protrusions configured to increase a surface area of the gate electrode; wherein ions within the ion gel are able to arrange themselves at the surfaces of the graphene layers to cause the detectable change in one or more of an electrical and optical property of the graphene layers when a gate voltage is applied to the gate electrode. Previously presented
(Newly Added) A method comprising: forming a multilayer graphene composite comprising a plurality of stacked graphene layers separated from one another by an ion gel, wherein the ion gel is intercalated between adjacent graphene layers such that ions within the ion gel are able to arrange themselves at the surfaces of the graphene layers to cause a detectable change in one or more of an electrical and optical property of the graphene layers when a gate voltage is applied to a gate electrode in proximity to the ion gel. New
(Newly Added) The method of claim 32, wherein forming the multilayer graphene composite comprises one of mixing graphene ink with an ion gel to produce a solution-processable composite usable to print the m ultilayer graphene composite, and the repeated and sequential deposition of a graphene layer followed by an ion gel layer. New
(Newly Added) A method comprising: applying a gate voltage to a gate electrode in proximity to an ion gel of a multilayer graphene composite, the multilayer graphene composite comprising a plurality of stacked graphene layers separated from one another by the ion gel, wherein the ion gel is intercalated between adjacent graphene layers such that ions within the ion gel are able to arrange themselves at the surfaces of the graphene layers to cause a detectable change in one or more of an electrical and optical property of the graphene layers when the gate voltage is applied to the gate electrode. New
Layer stacks claimed or described, ordered top of device to substrate.
multilayer graphene composite
ion gel-gated multilayer graphene apparatus
Materials described outside the worked examples.
graphene
ion gel
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
Figure 1 shows a conventional field-effect transistor (cross-section);
Patent
Atlas literature
Patent
US 10,522,628Patent drawings and their descriptions. Click a drawing to enlarge it.
Figure 1 shows a conventional field-effect transistor (cross-section);
Figure 2 shows a field-effect transistor comprising an ionic liquid gate dielectric (cross- section);
Figure 3 shows the typical charge distribution within a multilayer graphene channel separated from a gate electrode by an ionic liquid (cross-section); Figure 4a shows an apparatus comprising a multilayer graphene composite according to one embodiment of the present disclosure (cross-section); …
Figure 5 illustrates the Pauli blocking phenomenon; Figure 6a shows an apparatus comprising a multilayer graphene composite according to another embodiment of the present disclosure (cross-section); Figure 6b shows the apparatus of Figure 6a when a gate voltage is applied to the gate electrode; …
Figure 8 shows an apparatus comprising a multilayer graphene composite according to another embodiment of the present disclosure (schematic);
Figure 9 shows an apparatus comprising a multilayer graphene composite according to another embodiment of the present disclosure (schematic);
Figure 10 shows the main steps of a method of making an apparatus described herein;
Figure 11 shows the main steps of a method of using an apparatus described herein; and
Figure 12 shows a computer-readable medium comprising a computer program configured to perform, control or enable one or more of the method steps of
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
1-15. Canceled
Canceled
A multilayer graphene composite comprising a plurality of stacked graphene layers separated from one another by an ion gel, wherein the ion gel is intercalated between adjacent grap h ene layers such that ions within the ion gel are able to arrange themselves at the surfaces of the graphene layers to cause a detectable change in one or more of an electrical and optical property of the graphene layers when a gate voltage is applied to a gate electrode in proximity to the ion gel. Previously presented
The m ultilayer graphene composite of claim 16, wherein the graphene layers of the stack are in the form of one or more of a graphite crystal, single layers of graphene, and a percolation network of graphene flakes. Previously presented
An apparatus comprising the multilayer graphene composite of claim 16, and a gate electrode in proximity to the ion gel configured to cause a detectable change in the transparency of the graphene layers, and switch between an opaque state, and a transparent state. Previously presented
27-29. Canceled
Canceled
An apparatus, comprising: a plurality of stacked graphene layers separated from one another by an ion gel, wherein the ion gel is intercalated between adjacent graphene layers; and a gate electrode in proximity to the ion gel and capacitively coupled to the graphene layers, the gate electrode configured to cause a detectable change in the transparency of the graphene layers by switching the graphene layers between an opaque state and a transparent state; wherein ions within the ion gel are able to arrange themselves at the surfaces of the graphene layers to cause the detectable change in the transparency of the graphene layers when a gate voltage is applied to the gate electrode. Previously presented
An apparatus, comprising: a plurality of stacked graphene layers separated from one another by an ion gel, wherein the ion gel is intercalated between adjacent graphene layers; a gate electrode in proximity to the ion gel and configured to cause a detectable change in the graphene layers, the gate electrode comprising one or more of pores and protrusions configured to increase a surface area of the gate electrode; wherein ions within the ion gel are able to arrange themselves at the surfaces of the graphene layers to cause the detectable change in one or more of an electrical and optical property of the graphene layers when a gate voltage is applied to the gate electrode. Previously presented
(Newly Added) A method comprising: forming a multilayer graphene composite comprising a plurality of stacked graphene layers separated from one another by an ion gel, wherein the ion gel is intercalated between adjacent graphene layers such that ions within the ion gel are able to arrange themselves at the surfaces of the graphene layers to cause a detectable change in one or more of an electrical and optical property of the graphene layers when a gate voltage is applied to a gate electrode in proximity to the ion gel. New
(Newly Added) The method of claim 32, wherein forming the multilayer graphene composite comprises one of mixing graphene ink with an ion gel to produce a solution-processable composite usable to print the m ultilayer graphene composite, and the repeated and sequential deposition of a graphene layer followed by an ion gel layer. New
(Newly Added) A method comprising: applying a gate voltage to a gate electrode in proximity to an ion gel of a multilayer graphene composite, the multilayer graphene composite comprising a plurality of stacked graphene layers separated from one another by the ion gel, wherein the ion gel is intercalated between adjacent graphene layers such that ions within the ion gel are able to arrange themselves at the surfaces of the graphene layers to cause a detectable change in one or more of an electrical and optical property of the graphene layers when the gate voltage is applied to the gate electrode. New
Layer stacks claimed or described, ordered top of device to substrate.
multilayer graphene composite
ion gel-gated multilayer graphene apparatus
Materials described outside the worked examples.
graphene
ion gel
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
Figure 1 shows a conventional field-effect transistor (cross-section);
Patent
Atlas literature
Patent
US 10,522,628Patent drawings and their descriptions. Click a drawing to enlarge it.
Figure 1 shows a conventional field-effect transistor (cross-section);
Figure 2 shows a field-effect transistor comprising an ionic liquid gate dielectric (cross- section);
Figure 3 shows the typical charge distribution within a multilayer graphene channel separated from a gate electrode by an ionic liquid (cross-section); Figure 4a shows an apparatus comprising a multilayer graphene composite according to one embodiment of the present disclosure (cross-section); …
Figure 5 illustrates the Pauli blocking phenomenon; Figure 6a shows an apparatus comprising a multilayer graphene composite according to another embodiment of the present disclosure (cross-section); Figure 6b shows the apparatus of Figure 6a when a gate voltage is applied to the gate electrode; …
Figure 8 shows an apparatus comprising a multilayer graphene composite according to another embodiment of the present disclosure (schematic);
Figure 9 shows an apparatus comprising a multilayer graphene composite according to another embodiment of the present disclosure (schematic);
Figure 10 shows the main steps of a method of making an apparatus described herein;
Figure 11 shows the main steps of a method of using an apparatus described herein; and
Figure 12 shows a computer-readable medium comprising a computer program configured to perform, control or enable one or more of the method steps of
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
1-15. Canceled
Canceled
A multilayer graphene composite comprising a plurality of stacked graphene layers separated from one another by an ion gel, wherein the ion gel is intercalated between adjacent grap h ene layers such that ions within the ion gel are able to arrange themselves at the surfaces of the graphene layers to cause a detectable change in one or more of an electrical and optical property of the graphene layers when a gate voltage is applied to a gate electrode in proximity to the ion gel. Previously presented
The m ultilayer graphene composite of claim 16, wherein the graphene layers of the stack are in the form of one or more of a graphite crystal, single layers of graphene, and a percolation network of graphene flakes. Previously presented
An apparatus comprising the multilayer graphene composite of claim 16, and a gate electrode in proximity to the ion gel configured to cause a detectable change in the transparency of the graphene layers, and switch between an opaque state, and a transparent state. Previously presented
27-29. Canceled
Canceled
An apparatus, comprising: a plurality of stacked graphene layers separated from one another by an ion gel, wherein the ion gel is intercalated between adjacent graphene layers; and a gate electrode in proximity to the ion gel and capacitively coupled to the graphene layers, the gate electrode configured to cause a detectable change in the transparency of the graphene layers by switching the graphene layers between an opaque state and a transparent state; wherein ions within the ion gel are able to arrange themselves at the surfaces of the graphene layers to cause the detectable change in the transparency of the graphene layers when a gate voltage is applied to the gate electrode. Previously presented
An apparatus, comprising: a plurality of stacked graphene layers separated from one another by an ion gel, wherein the ion gel is intercalated between adjacent graphene layers; a gate electrode in proximity to the ion gel and configured to cause a detectable change in the graphene layers, the gate electrode comprising one or more of pores and protrusions configured to increase a surface area of the gate electrode; wherein ions within the ion gel are able to arrange themselves at the surfaces of the graphene layers to cause the detectable change in one or more of an electrical and optical property of the graphene layers when a gate voltage is applied to the gate electrode. Previously presented
(Newly Added) A method comprising: forming a multilayer graphene composite comprising a plurality of stacked graphene layers separated from one another by an ion gel, wherein the ion gel is intercalated between adjacent graphene layers such that ions within the ion gel are able to arrange themselves at the surfaces of the graphene layers to cause a detectable change in one or more of an electrical and optical property of the graphene layers when a gate voltage is applied to a gate electrode in proximity to the ion gel. New
(Newly Added) The method of claim 32, wherein forming the multilayer graphene composite comprises one of mixing graphene ink with an ion gel to produce a solution-processable composite usable to print the m ultilayer graphene composite, and the repeated and sequential deposition of a graphene layer followed by an ion gel layer. New
(Newly Added) A method comprising: applying a gate voltage to a gate electrode in proximity to an ion gel of a multilayer graphene composite, the multilayer graphene composite comprising a plurality of stacked graphene layers separated from one another by the ion gel, wherein the ion gel is intercalated between adjacent graphene layers such that ions within the ion gel are able to arrange themselves at the surfaces of the graphene layers to cause a detectable change in one or more of an electrical and optical property of the graphene layers when the gate voltage is applied to the gate electrode. New
Layer stacks claimed or described, ordered top of device to substrate.
multilayer graphene composite
ion gel-gated multilayer graphene apparatus
Materials described outside the worked examples.
graphene
ion gel
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
Figure 1 shows a conventional field-effect transistor (cross-section);
graphene ink
polystyrene-poly(methyl methacrylate)-polystyrene/1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ion gel
1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide
polystyrene-poly(methyl methacrylate)-polystyrene
ethylacetate
C₄H₈O₂
Figure 2 shows a field-effect transistor comprising an ionic liquid gate dielectric (cross- section);
Figure 5 illustrates the Pauli blocking phenomenon; Figure 6a shows an apparatus comprising a multilayer graphene composite according to another embodiment of the present disclosure (cross-section); Figure 6b shows the apparatus of Figure 6a when a gate voltage is applied to the gate electrode; …
graphene ink
polystyrene-poly(methyl methacrylate)-polystyrene/1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ion gel
1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide
polystyrene-poly(methyl methacrylate)-polystyrene
ethylacetate
C₄H₈O₂
Figure 2 shows a field-effect transistor comprising an ionic liquid gate dielectric (cross- section);
Figure 5 illustrates the Pauli blocking phenomenon; Figure 6a shows an apparatus comprising a multilayer graphene composite according to another embodiment of the present disclosure (cross-section); Figure 6b shows the apparatus of Figure 6a when a gate voltage is applied to the gate electrode; …
graphene ink
polystyrene-poly(methyl methacrylate)-polystyrene/1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ion gel
1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide
polystyrene-poly(methyl methacrylate)-polystyrene
ethylacetate
C₄H₈O₂
Figure 2 shows a field-effect transistor comprising an ionic liquid gate dielectric (cross- section);
Figure 5 illustrates the Pauli blocking phenomenon; Figure 6a shows an apparatus comprising a multilayer graphene composite according to another embodiment of the present disclosure (cross-section); Figure 6b shows the apparatus of Figure 6a when a gate voltage is applied to the gate electrode; …
graphene ink
polystyrene-poly(methyl methacrylate)-polystyrene/1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ion gel
1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide
polystyrene-poly(methyl methacrylate)-polystyrene
ethylacetate
C₄H₈O₂
Figure 2 shows a field-effect transistor comprising an ionic liquid gate dielectric (cross- section);
Figure 5 illustrates the Pauli blocking phenomenon; Figure 6a shows an apparatus comprising a multilayer graphene composite according to another embodiment of the present disclosure (cross-section); Figure 6b shows the apparatus of Figure 6a when a gate voltage is applied to the gate electrode; …