TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The graphene particulates have widths of less than 10 nm, and the graphene particulates comprise less than one oxy functional group per 100 square nanometer. The graphene particulates are: in the form of nanoribbons; and in the form of quantum dots. The graphene particulates comprise less than one oxy functional group per 100 square nanometer. The graphene particulates have a mean width of less than 100 nm, preferably 50 nm. The graphene particulates are functionalized with one or more member comprising proteins, DNA, RNA, gold, ethylene diamine, methyl amine, carbonyl amine, and other carbonyls. The graphene particulates are dispersed in a fluid. The fluid in which the graphene particulates are dispersed is water, dimethylformamide (DMF), chloroform, dichloromethane, dichloroethane, and/or methanol. The graphene particulates are present in the dispersion at a level of at least 0.1 wt.%, preferably 2 wt.%. The graphene particulates are: in the form of a dry powder; and in the form of a film. The graphite blocks are cut from a source of graphite using an ultramicrotome. The ultramicrotome utilizes a diamond knife having an edge radius of 1-5 nm. The source of graphite comprises highly oriented pyrolytic graphite (HOPG). The acid is a super acid. The super acid is chlorosulfonic acid, and/or sulfuric acid. The graphite blocks have at least one dimension of less than 100 nm, preferably less than 50 nm. The source of graphite comprises HOPG encased in a wax mold. The graphite blocks comprise a portion of the wax mold adhering to it, and the method further comprises removing the wax mold from the graphite blocks prior to their exfoliation. The at least 90% of the graphene particulates have widths within plus minus 3 nm from the mean width of the graphene particulates. The wedge comprises a wide end and a narrow end, the width of the wide end is 10 nm and the width of the narrow end is 2 nm. Preferred Method: The wax mold is removed from the graphite blocks by evaporation. The graphite blocks are cut in the shape of a wedge. In method, upon exfoliation of the graphite blocks, graphene particulates having a mean width of less than 10 nm is produced. EXAMPLE - No suitable example given.