HIGH-THROUGHPUT IMAGING OF GRAPHENE BASED SHEETS BY FLUORESCENCE QUENCHING MICROSCOPY AND APPLICATIONS OF SAME

Jiaxing Huang

Patent

Atlas literature

Patent

US 8,426,120

HIGH-THROUGHPUT IMAGING OF GRAPHENE BASED SHEETS BY FLUORESCENCE QUENCHING MICROSCOPY AND APPLICATIONS OF SAME

Jiaxing Huang

Drawings

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

FIG. 1

FIG. 1 schematically shows (a) a structural model of graphene; (b) a structural model of graphene oxide (GO); (c) a structural model of reduced graphene oxide …

FIG. 2

FIG. 2 schematically shows common microscopy techniques for imaging GBS. 15 Optical microscopy images of graphene based on (a) interference (scale bar = 20 pm) …

FIG. 3

FIG. 3 show a direct ﬂuorescence microscopy observation of GBS. (a) Fluorescence spectra of micron sized GO and r-GO sheets dispersed in water upon 10 …

FIG. 4

FIG. 4 shows an FQM for visualizing GBS according to one embodiment of the 20 present invention. Upon the addition of small amount of GO and r-GO, the …

FIG. 5

FIG. 5 shows an AFM image of GO sheets deposited on Si O 2/Si substrate showing single layers and folded double layers. (b) FQM image of the same area after 5 …

FIG. 6

FIG. 6 show the eﬀects of the thickness of a spacer layer (upper row) and the dye layer (bottom) on the FQM contrast. (a) When a thin dye layer (< 5 nm) is …

FIG. 7

FIG. 7 is an FQM imaging of GO sheets deposited on polyester slides by (a) drop casting, (b) spin coating and (c) LB assembly. (a) Drop casting and (b) spin …

FIG. 8

FIG. 8 is a Brewster angle microscopy (NIMA MicroBAM) image of GO sheets ﬂoating on air-water interface. (a) The change of the Brewster condition (53 0 for …

FIG. 9

FIG. 9 shows an FQM allows direct, real-time, solution phase observation of GO sheets. (a) Under bright ﬁeld, GO sheets suspended in an aqueous dilute …

FIG. 10

FIG. 10 is an Interfacing FQM imaging with photolithography. FQM images of 15 GO sheets deposited on glass obtained with a 25 nm thick layer of DCM doped (A) …

FIG. 11

FIG. 11 displays Table 1 for current imaging techniques for visualizing graphene- based sheets.

Claims

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

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Worked examples

Embodiments described in the patent, grouped by the materials and process steps they use.

Example 1

example section example

3 materials2 process steps

Synthesis of graphene, graphene oxide (GO), and reduced graphene oxide (r-GO). Graphene was prepared by micro-mechanical cleavage of highly oriented pyrolytic graphite (HOPG) using the Scotch Tape method. GO was synthesized using a modified Hummers and Offeman's method.

Materials

Materials described outside the worked examples.

fluorescein

Fluorescent Coating Dye

4-(dicyanomethylene)-2-methyl-6-(4-dimethylaminostyryl)-4H-pyran

Fluorescent Coating Dye

Characterization

Measurements and analyses referenced in the patent, with their drawing references.

optical absorption

Optical Absorption

FIG. 1 schematically shows (a) a structural model of graphene; (b) a structural model of graphene oxide (GO); (c) a structural model of reduced graphene oxide …

Figure references

FIG. 1

graphene

Reported properties

Performance values and ranges asserted in the specification or claims.

Property	Value	Material
Thickness	20–50 nm	—
Thickness

Why these are connected

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

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