Patent
US 9,249,027APPARATUS AND METHOD FOR EXFOLIATION OF GRAPHENE
Jong Beom Baek
US
Copyright © 2026 Matter42. All rights reserved.
Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
An apparatus for exfoliation of graphene, comprising: a chamber which has a through-hole formed at one surface thereof; a cylinder which receives graphite and a volatile material to be vaporized at room temperature and has an opening corresponding to the through-hole of the chamber, and which is mounted at an outside of the chamber;, said cylinder having a flange at the lower end thereof; a clamp to vertically move inside the chamber so as to pass through the through- hole of the chamber and thus selectively seal the opening of the cylinder; an operation mechanism which is connected with the clamp and vertically moves the clamp so that the opening of the cylinder is selectively sealed by the clamp; and a iiq outside of the chamber to enclose the through-hole, said iig having a lateral slot therein to slidably receive the flange of said cylinder.
The apparatus of claim 1, wherein the operation mechanism comprises an operation lever which is installed at an outside of the chamber, and a link member which is connected between the operation lever and the clamp in the chamber so as to move the clamp through operation of the operation lever.
The-apparatus of claim 1, wherein-a jig enclosing canceled
The apparatus of claim 1, wherein a seal packing is provided around the opening of the cylinder.
The apparatus of claim 1, wherein the volatile material is liquid nitrogen, liquid oxygen, solid carbon dioxide(dry ice) or liquid carbon dioxide.
A graphene manufactured by the apparatus of claim 1 or 8. withdrawn
An apparatus for exfoliation of graphene, comprising: a chamber which has a through-hole formed at one surface thereof; a cylinder which receives graphite and a material having a boiling point of 200 °C or less and has an opening to be corresponding to the through-hole of the chamber, and which is disposed at an outside of the chamber; a clamp which is vertically movable in the chamber so as to pass through the through-hole of the chamber and thus selectively seal the opening of the cylinder; an operation mechanism which is connected with the clamp and vertically moves the clamp so that the opening of the cylinder is selectively sealed by the clamp; a heating unit which heats the cylinder; and a iig which is provided at an outside of the chamber to enclose the through-hole, and which laterally and slidably receives the cylinder.
The apparatus of claim 8, wherein the material having a boiling point of 200 ° C or less is water, methanol, ethanol, isopropyl alcohol, acetone, tetrahydrofuran, dimethylacetamide, dimethylformamide, normal hexane, cyclohexane, heptanes, toluene, benzene, ethyl acetate or a mixture thereof.
A method for exfoliation of graphene, comprising: 3 a) filling a predetermined amount of graphite and a volatile material to be vaporized at room temperature in a cylinder, and installing the cylinder at a chamber; b) sealing the cylinder by moving a clamp; and, c) moving the clamp and releasing an internal pressure of the cylinder when the internal pressure of the cylinder is more than a predetermined value due to vaporization of the volatile material. withdrawn
The method of claim 11, further comprising heating the cylinder after the b) step. withdrawn
The method of claim 11, wherein, in the c) step, the predetermined value is 10 bar or more. withdrawn
The method of claim 11, wherein, in the c) step, the clamp is spaced apart from the cylinder by interlocking between an operation lever and a link member, and thus the internal pressure of the cylinder is released. withdrawn
A graphene manufactured by the method of claim 11. 4 withdrawn
Layer stacks claimed or described, ordered top of device to substrate.
graphene exfoliation apparatus (volatile material at room temperature)
No layer stack recorded.
graphene exfoliation apparatus (material with boiling point ≤200°C, with heating unit)
No layer stack recorded.
Materials described outside the worked examples.
graphite
graphene
liquid nitrogen
N₂
liquid oxygen
O₂
solid carbon dioxide (dry ice)
CO₂
material having a boiling point of 200 °C or less
water
H₂O
methanol
CH₃OH
ethanol
C₂H₅OH
isopropyl alcohol
C₃H₈O
acetone
C₃H₆O
tetrahydrofuran
C₄H₈O
dimethylacetamide
C₄H₉NO
dimethylformamide
C₃H₇NO
normal hexane
C₆H₁₄
cyclohexane
C₆H₁₂
heptanes
C₇H₁₆
toluene
C₇H₈
benzene
C₆H₆
ethyl acetate
C₄H₈O₂
Additional fabrication and treatment steps described in the patent.
Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
An apparatus for exfoliation of graphene, comprising: a chamber which has a through-hole formed at one surface thereof; a cylinder which receives graphite and a volatile material to be vaporized at room temperature and has an opening corresponding to the through-hole of the chamber, and which is mounted at an outside of the chamber;, said cylinder having a flange at the lower end thereof; a clamp to vertically move inside the chamber so as to pass through the through- hole of the chamber and thus selectively seal the opening of the cylinder; an operation mechanism which is connected with the clamp and vertically moves the clamp so that the opening of the cylinder is selectively sealed by the clamp; and a iiq outside of the chamber to enclose the through-hole, said iig having a lateral slot therein to slidably receive the flange of said cylinder.
The apparatus of claim 1, wherein the operation mechanism comprises an operation lever which is installed at an outside of the chamber, and a link member which is connected between the operation lever and the clamp in the chamber so as to move the clamp through operation of the operation lever.
The-apparatus of claim 1, wherein-a jig enclosing canceled
The apparatus of claim 1, wherein a seal packing is provided around the opening of the cylinder.
The apparatus of claim 1, wherein the volatile material is liquid nitrogen, liquid oxygen, solid carbon dioxide(dry ice) or liquid carbon dioxide.
A graphene manufactured by the apparatus of claim 1 or 8. withdrawn
An apparatus for exfoliation of graphene, comprising: a chamber which has a through-hole formed at one surface thereof; a cylinder which receives graphite and a material having a boiling point of 200 °C or less and has an opening to be corresponding to the through-hole of the chamber, and which is disposed at an outside of the chamber; a clamp which is vertically movable in the chamber so as to pass through the through-hole of the chamber and thus selectively seal the opening of the cylinder; an operation mechanism which is connected with the clamp and vertically moves the clamp so that the opening of the cylinder is selectively sealed by the clamp; a heating unit which heats the cylinder; and a iig which is provided at an outside of the chamber to enclose the through-hole, and which laterally and slidably receives the cylinder.
The apparatus of claim 8, wherein the material having a boiling point of 200 ° C or less is water, methanol, ethanol, isopropyl alcohol, acetone, tetrahydrofuran, dimethylacetamide, dimethylformamide, normal hexane, cyclohexane, heptanes, toluene, benzene, ethyl acetate or a mixture thereof.
A method for exfoliation of graphene, comprising: 3 a) filling a predetermined amount of graphite and a volatile material to be vaporized at room temperature in a cylinder, and installing the cylinder at a chamber; b) sealing the cylinder by moving a clamp; and, c) moving the clamp and releasing an internal pressure of the cylinder when the internal pressure of the cylinder is more than a predetermined value due to vaporization of the volatile material. withdrawn
The method of claim 11, further comprising heating the cylinder after the b) step. withdrawn
The method of claim 11, wherein, in the c) step, the predetermined value is 10 bar or more. withdrawn
The method of claim 11, wherein, in the c) step, the clamp is spaced apart from the cylinder by interlocking between an operation lever and a link member, and thus the internal pressure of the cylinder is released. withdrawn
A graphene manufactured by the method of claim 11. 4 withdrawn
Layer stacks claimed or described, ordered top of device to substrate.
graphene exfoliation apparatus (volatile material at room temperature)
No layer stack recorded.
graphene exfoliation apparatus (material with boiling point ≤200°C, with heating unit)
No layer stack recorded.
Materials described outside the worked examples.
graphite
graphene
liquid nitrogen
N₂
liquid oxygen
O₂
solid carbon dioxide (dry ice)
CO₂
material having a boiling point of 200 °C or less
water
H₂O
methanol
CH₃OH
ethanol
C₂H₅OH
isopropyl alcohol
C₃H₈O
acetone
C₃H₆O
tetrahydrofuran
C₄H₈O
dimethylacetamide
C₄H₉NO
dimethylformamide
C₃H₇NO
normal hexane
C₆H₁₄
cyclohexane
C₆H₁₂
heptanes
C₇H₁₆
toluene
C₇H₈
benzene
C₆H₆
ethyl acetate
C₄H₈O₂
Additional fabrication and treatment steps described in the patent.
Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
An apparatus for exfoliation of graphene, comprising: a chamber which has a through-hole formed at one surface thereof; a cylinder which receives graphite and a volatile material to be vaporized at room temperature and has an opening corresponding to the through-hole of the chamber, and which is mounted at an outside of the chamber;, said cylinder having a flange at the lower end thereof; a clamp to vertically move inside the chamber so as to pass through the through- hole of the chamber and thus selectively seal the opening of the cylinder; an operation mechanism which is connected with the clamp and vertically moves the clamp so that the opening of the cylinder is selectively sealed by the clamp; and a iiq outside of the chamber to enclose the through-hole, said iig having a lateral slot therein to slidably receive the flange of said cylinder.
The apparatus of claim 1, wherein the operation mechanism comprises an operation lever which is installed at an outside of the chamber, and a link member which is connected between the operation lever and the clamp in the chamber so as to move the clamp through operation of the operation lever.
The-apparatus of claim 1, wherein-a jig enclosing canceled
The apparatus of claim 1, wherein a seal packing is provided around the opening of the cylinder.
The apparatus of claim 1, wherein the volatile material is liquid nitrogen, liquid oxygen, solid carbon dioxide(dry ice) or liquid carbon dioxide.
A graphene manufactured by the apparatus of claim 1 or 8. withdrawn
An apparatus for exfoliation of graphene, comprising: a chamber which has a through-hole formed at one surface thereof; a cylinder which receives graphite and a material having a boiling point of 200 °C or less and has an opening to be corresponding to the through-hole of the chamber, and which is disposed at an outside of the chamber; a clamp which is vertically movable in the chamber so as to pass through the through-hole of the chamber and thus selectively seal the opening of the cylinder; an operation mechanism which is connected with the clamp and vertically moves the clamp so that the opening of the cylinder is selectively sealed by the clamp; a heating unit which heats the cylinder; and a iig which is provided at an outside of the chamber to enclose the through-hole, and which laterally and slidably receives the cylinder.
The apparatus of claim 8, wherein the material having a boiling point of 200 ° C or less is water, methanol, ethanol, isopropyl alcohol, acetone, tetrahydrofuran, dimethylacetamide, dimethylformamide, normal hexane, cyclohexane, heptanes, toluene, benzene, ethyl acetate or a mixture thereof.
A method for exfoliation of graphene, comprising: 3 a) filling a predetermined amount of graphite and a volatile material to be vaporized at room temperature in a cylinder, and installing the cylinder at a chamber; b) sealing the cylinder by moving a clamp; and, c) moving the clamp and releasing an internal pressure of the cylinder when the internal pressure of the cylinder is more than a predetermined value due to vaporization of the volatile material. withdrawn
The method of claim 11, further comprising heating the cylinder after the b) step. withdrawn
The method of claim 11, wherein, in the c) step, the predetermined value is 10 bar or more. withdrawn
The method of claim 11, wherein, in the c) step, the clamp is spaced apart from the cylinder by interlocking between an operation lever and a link member, and thus the internal pressure of the cylinder is released. withdrawn
A graphene manufactured by the method of claim 11. 4 withdrawn
Layer stacks claimed or described, ordered top of device to substrate.
graphene exfoliation apparatus (volatile material at room temperature)
No layer stack recorded.
graphene exfoliation apparatus (material with boiling point ≤200°C, with heating unit)
No layer stack recorded.
Materials described outside the worked examples.
graphite
graphene
liquid nitrogen
N₂
liquid oxygen
O₂
solid carbon dioxide (dry ice)
CO₂
material having a boiling point of 200 °C or less
water
H₂O
methanol
CH₃OH
ethanol
C₂H₅OH
isopropyl alcohol
C₃H₈O
acetone
C₃H₆O
tetrahydrofuran
C₄H₈O
dimethylacetamide
C₄H₉NO
dimethylformamide
C₃H₇NO
normal hexane
C₆H₁₄
cyclohexane
C₆H₁₂
heptanes
C₇H₁₆
toluene
C₇H₈
benzene
C₆H₆
ethyl acetate
C₄H₈O₂
Additional fabrication and treatment steps described in the patent.
Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
An apparatus for exfoliation of graphene, comprising: a chamber which has a through-hole formed at one surface thereof; a cylinder which receives graphite and a volatile material to be vaporized at room temperature and has an opening corresponding to the through-hole of the chamber, and which is mounted at an outside of the chamber;, said cylinder having a flange at the lower end thereof; a clamp to vertically move inside the chamber so as to pass through the through- hole of the chamber and thus selectively seal the opening of the cylinder; an operation mechanism which is connected with the clamp and vertically moves the clamp so that the opening of the cylinder is selectively sealed by the clamp; and a iiq outside of the chamber to enclose the through-hole, said iig having a lateral slot therein to slidably receive the flange of said cylinder.
The apparatus of claim 1, wherein the operation mechanism comprises an operation lever which is installed at an outside of the chamber, and a link member which is connected between the operation lever and the clamp in the chamber so as to move the clamp through operation of the operation lever.
The-apparatus of claim 1, wherein-a jig enclosing canceled
The apparatus of claim 1, wherein a seal packing is provided around the opening of the cylinder.
The apparatus of claim 1, wherein the volatile material is liquid nitrogen, liquid oxygen, solid carbon dioxide(dry ice) or liquid carbon dioxide.
A graphene manufactured by the apparatus of claim 1 or 8. withdrawn
An apparatus for exfoliation of graphene, comprising: a chamber which has a through-hole formed at one surface thereof; a cylinder which receives graphite and a material having a boiling point of 200 °C or less and has an opening to be corresponding to the through-hole of the chamber, and which is disposed at an outside of the chamber; a clamp which is vertically movable in the chamber so as to pass through the through-hole of the chamber and thus selectively seal the opening of the cylinder; an operation mechanism which is connected with the clamp and vertically moves the clamp so that the opening of the cylinder is selectively sealed by the clamp; a heating unit which heats the cylinder; and a iig which is provided at an outside of the chamber to enclose the through-hole, and which laterally and slidably receives the cylinder.
The apparatus of claim 8, wherein the material having a boiling point of 200 ° C or less is water, methanol, ethanol, isopropyl alcohol, acetone, tetrahydrofuran, dimethylacetamide, dimethylformamide, normal hexane, cyclohexane, heptanes, toluene, benzene, ethyl acetate or a mixture thereof.
A method for exfoliation of graphene, comprising: 3 a) filling a predetermined amount of graphite and a volatile material to be vaporized at room temperature in a cylinder, and installing the cylinder at a chamber; b) sealing the cylinder by moving a clamp; and, c) moving the clamp and releasing an internal pressure of the cylinder when the internal pressure of the cylinder is more than a predetermined value due to vaporization of the volatile material. withdrawn
The method of claim 11, further comprising heating the cylinder after the b) step. withdrawn
The method of claim 11, wherein, in the c) step, the predetermined value is 10 bar or more. withdrawn
The method of claim 11, wherein, in the c) step, the clamp is spaced apart from the cylinder by interlocking between an operation lever and a link member, and thus the internal pressure of the cylinder is released. withdrawn
A graphene manufactured by the method of claim 11. 4 withdrawn
Layer stacks claimed or described, ordered top of device to substrate.
graphene exfoliation apparatus (volatile material at room temperature)
No layer stack recorded.
graphene exfoliation apparatus (material with boiling point ≤200°C, with heating unit)
No layer stack recorded.
Materials described outside the worked examples.
graphite
graphene
liquid nitrogen
N₂
liquid oxygen
O₂
solid carbon dioxide (dry ice)
CO₂
material having a boiling point of 200 °C or less
water
H₂O
methanol
CH₃OH
ethanol
C₂H₅OH
isopropyl alcohol
C₃H₈O
acetone
C₃H₆O
tetrahydrofuran
C₄H₈O
dimethylacetamide
C₄H₉NO
dimethylformamide
C₃H₇NO
normal hexane
C₆H₁₄
cyclohexane
C₆H₁₂
heptanes
C₇H₁₆
toluene
C₇H₈
benzene
C₆H₆
ethyl acetate
C₄H₈O₂
Additional fabrication and treatment steps described in the patent.