Material Trivial Transfer Graphene

Richard S. PLOSS JR.

Patent

Atlas literature

Patent

US 8,906,245

Material Trivial Transfer Graphene

Richard S. Ploss Jr.

Drawings

Patent drawings and their descriptions. Click a drawing to enlarge it.

FIG. 1

FIG. 1 is a ﬂow chart showing the process for preparing a PMMA-coated graphene on a polymer.

FIG. 2

FIG. 2 is a cross sectional view of CVD graphene on a source substrate.

FIG. 3

FIG.3, the method and process for preparing the initial graphene transfer product comprises the following steps: Step 1: Remove the Chemical Vapor Deposition …

FIG. 4

FIG. 4 is a ﬂow chart showing the process for transferring the PMMA-coated graphene to a target substrate.

FIG. 5

FIG. 5 is a cross-sectional view of a PMMA-coated CVD graphene on a target substrate. DETAIL DESCRIPTIONS OF THE INVENTION 20 All illustrations of the drawings …

Claims

Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.

2 independent · 11 dependent

1
IndependentCVD graphenepoly(methyl methacrylate)H₂Opolymer
A method for transferring a poly(methyl methacrylate)-coated (PMMA-coated) graphene from a source substrate to a target substrate, comprising 5 cutting said source substrate, wherein said source substrate has been coated with CVD graphene, into pieces; spin-coating a layer of PMMA on surfaces of said CVD graphene; etching away said source substrate from said PMMA-coated CVD graphene with an etching solution; 10 ﬂoating said PMMA-coated CVD graphene free from said source substrate in said etching solution; placing said PMMA-coated CVD graphene into deionized (DI) water; rinsing said PMMA-coated CVD graphene to wash away said etching solution; in response of the step of rinsing, coating said PMMA-coated CVD graphene 15 onto a polymer; drying said polymer, wherein said polymer has been coated with said PMMA- coated CVD graphene; and obtaining said polymer which has been coated with said PMMA-coated CVD graphene.
1. 2
  Dependent← claim 1Cuetching solution CuSO4:HCl:H₂O
  The method for transferring a PMMA-coated graphene from a source substrate to a target substrate of claim 1, comprising said source substrate is a copper foil substrate; and said etching solution is CuSO4:HC l:H₂ O=10 g:50m l:50m l.
2. 3
  Dependent← claim 1sponge
  The method for transferring a PMMA-coated graphene from a source substrate to a target substrate of claim 1, comprising said polymer is a sponge.
10
IndependentCVD graphenepoly(methyl methacrylate)H₂Opolymer
A method for transferring a PMMA-coated graphene from a source substrate to a target substrate, comprising preparing a polymer, wherein said polymer has been coated with said PMMA- coated CVD graphene; 5 placing said polymer which has been coated with said PMMA-coated CVD graphene, into DI water; peeling oﬀ said PMMA-coated CVD graphene from said polymer; ﬂoating said PMMA-coated CVD graphene on said DI water; cutting said target substrate at a pre-determined size; 10 cleaning said target substrate; scooping up said ﬂoating PMMA-coated CVD graphene with said target substrate; and obtaining said target substrate, wherein said target substrate has been coated with said PMMA-coated CVD graphene.
1. 11
  Dependent← claim 10CVD graphenepoly(methyl methacrylate)H₂Opolymer
  The method for transferring a PMMA-coated graphene from a source substrate to a target substrate of claim 10, comprising cutting said source substrate, wherein said source substrate has been coated with CVD graphene, into pieces; 20 spin-coating a layer of PMMA on surfaces of said CVD graphene; etching away said source substrate from said PMMA-coated CVD graphene with an etching solution; ﬂoating said PMMA-coated CVD graphene free from said source substrate in said etching solution; 25 placing said PMMA-coated CVD graphene into DI water; rinsing said PMMA-coated CVD graphene to wash away said etching solution; after the step of rinsing, coating said PMMA-coated CVD graphene onto a polymer; drying said polymer, wherein said polymer has been coated with said PMMA- 30 coated CVD graphene; and 9 obtaining said polymer which has been coated with said PMMA-coated CVD graphene.

Materials

Materials described outside the worked examples.

CVD graphene

Transferred Material

poly(methyl methacrylate)

Coating Support Material

Process steps

Additional fabrication and treatment steps described in the patent.

Graphene Transfer

Step 1

Process details

steps:cut source substrate (CVD graphene on copper foil) into pieces, spin-coat PMMA layer on CVD graphene surfaces, etch away source substrate with CuSO4:HCl:H₂O (10g:50ml:50ml), float PMMA-coated CVD graphene in etching solution, place PMMA-coated CVD graphene into DI water, rinse PMMA-coated CVD graphene to remove etching solution, coat PMMA-coated CVD graphene onto polymer (sponge), dry polymer coated with PMMA-coated CVD graphene, place polymer with PMMA-coated CVD graphene into DI water, peel off PMMA-coated CVD graphene from polymer, float PMMA-coated CVD graphene on DI water, scoop up floating PMMA-coated CVD graphene with target substrate

PMMA concentration:3%-20% mg/ml

Materials:

Why these are connected

Related documents with shared materials, methods, properties, or citations.

Material Trivial Transfer Graphene | Matter42 Literature