TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Process: The process comprises mixing the three-dimensional material with the solvent to form a mixture and applying energy including ultrasound energy and/or a force including a centrifugal force, to the mixture, where a dispersion of the two-dimensional material is formed. The process further comprises: forming a film comprising two-dimensional material on a substrate; preparing a composite material comprising two-dimensional material and a polymer; and comprising forming a device comprising the two-dimensional material. The film is formed by vacuum filtration, spraying, dip coating, Mayer rod coating, screen printing, inkjet printing or Langmuir Blodgett deposition. The two-dimensional inorganic material is dispersed in a solvent having a dispersive Hansen solubility parameter of 10-22 MPa(0.5). The two-dimensional material is present in a film on a substrate. Preferred Components: The metal-containing material is metal chalcogenides, metal oxides, antimony telluride, titanium nitride chloride, bismuth telluride or bismuth selenide. The metal-containing material comprises a transition metal dichalcogenide of formula (MX2). The three-dimensional material comprises molybdenum disulfide or tungsten disulfide. The three-dimensional material is in the form of a powder. The dispersion comprises flakes of the two dimensional material having a thickness of less than or equal to 10 nm. The dispersion comprises at least one further material including nanomaterials. At least one further material is graphene, boron nitride, nanotubes and metallic nanowires. The film has a thickness of 5 nm to 1 mm, preferably 10-500 nm.M = Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Tc, Re, Ni, Pd or Pt; andX = S, Se or Te.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The solvent comprises an organic solvent, where the solvent is N-methylpyrrolidone, N-vinylpyrrolidone, cyclohexylpyrrolidone, isopropanol and dimethylformamide (all preferred), acetone, benzaldehyde, benzyl benzoate, benzyl ether, benzonitrile, bromobenzene, chlorobenzene, chloroform, cyclohexane, cyclohexanone, dimethylacetamide, dimethylimidazolidinone, dimethylsulfoxide, N-dodecylpyrrolidone, formamide, methanol, N-methylformamide, N-octyl pyrrolidone or quinoline. The solvent has a dispersive Hansen solubility parameter of 12-21 MPa(0.5), preferably 15-20 MPa(0.5). The solvent has a polar Hansen solubility parameter of 1-20 MPa(0.5). The solvent has a hydrogen-bonding Hansen solubility parameter of 1-20 MPa(0.5). The solvent has a surface energy of 60-80 mJ/m2 and/or a surface tension of 30-50 mJ/m2. EXAMPLE - No suitable example given.