Granted Patent B2

US 9,290,389 · App. 13/314,351 · Granted Mar 22, 2016

Abstract

Claims (38)

1. A method comprising:

providing graphene on a growth substrate;

providing a target substrate on the graphene to form a first composite comprising the target substrate and graphene; and

removing at least a portion of the first composite from the growth substrate;

wherein removing the first composite from the growth substrate comprises:

providing a membrane on the growth substrate to form a second composite comprising the membrane and the growth substrate; and

removing at least a portion of the first composite from the second composite,

wherein the attractive forces between the graphene and the target substrate forming the first composite are greater than the attractive forces between the graphene and the growth substrate and wherein the attractive forces between the growth substrate and the membrane forming the second composite are greater than the attractive forces between the growth substrate and the graphene, such that when the target substrate and the membrane are separated, at least a portion of the first composite and the second composite separate.

2. A method as claimed in claim 1 , wherein removing the first composite from the growth substrate involves physical separation of the first composite and the growth substrate.

3. A method as claimed in claim 1 , wherein removing the first composite from the growth substrate involves peeling the first composite from the growth substrate.

4. A method as claimed in claim 1 , wherein removing the first composite from the growth substrate involves a fully dry separation process.

5. A method as claimed in claim 1 , wherein removing the first composite from the growth substrate leaves the growth substrate intact.

6. A method as claimed in claim 1 , wherein the growth substrate is patterned to form isolated regions for removal along with the first composite when the first composite is removed from the growth substrate.

7. A method as claimed in claim 1 , wherein the graphene is processed when on the growth substrate before providing a target substrate on the graphene to form a first composite.

8. A method as claimed in claim 1 , wherein the target substrate is flexible.

9. A method as claimed in claim 1 , wherein removing at least a portion of the first composite from the growth substrate comprises removing the target substrate and portions of the graphene.

10. A method as claimed in claim 1 , comprising producing a product using the first composite.

11. A method comprising:

providing graphene on a growth substrate;

providing a target substrate on the graphene to form a first composite comprising the target substrate and graphene; and

removing at least a portion of the first composite from the growth substrate,

wherein providing graphene on a growth substrate involves

providing first graphene on a first surface of the growth substrate and providing second graphene on a second surface of the growth substrate;

wherein providing a target substrate on the graphene to form the first composite involves providing a first target substrate on the first graphene;

wherein removing at least a portion of the first composite from the growth substrate involves removing at least a portion of the first composite from the first surface of the growth substrate;

the method further comprising:

providing a second target substrate on the second graphene to form a second composite;

removing at least a portion of the second composite from the second surface of the growth substrate,

wherein a membrane provides the second target substrate and removing the second composite from the growth substrate occurs after removing the first composite from the first surface of the growth substrate and comprises:

providing a second membrane on the first surface of the growth substrate to form a third composite comprising the second membrane and the growth substrate; and

removing at least a portion of the second composite from the third composite.

12. A method comprising:

providing graphene on a growth substrate;

providing a target substrate on the graphene to form a first composite comprising the target substrate and graphene; and

removing at least a portion of the first composite from the growth substrate,

wherein removing the first composite from the growth substrate comprises:

providing a membrane directly on the growth substrate to form a second composite comprising the membrane and the growth substrate; and

removing at least a portion of the first composite from the second composite.

Assignments (8)