TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The CNT has carboxylic acid groups on the outer surface, where the copolymers or aromatic molecules are covalently bonded to the outer surface. The aerogel provides a surface area of greater than or equal to 300 m2/g, a density of less than 15 mg/cm3 and a 25 degrees C electrical conductivity of 1 x 10-4 S/cm. The aerogel comprises a macroporous honeycomb structure comprising honeycomb cells having honeycomb walls, where the honeycomb walls comprise CNTs entangled together. The honeycomb cells have a median size of 20-500 mu m and a thickness of 50-500 nm.    TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Components: The calibration data comprises resistance versus pressure, and the parameter to be sensed comprises pressure. The calibration data comprises a change in resistance for different vapor-phase materials, where the parameter to be sensed comprises the presence of any of the vapor-phase materials.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The aromatic molecules comprise fused benzene rings or a heterocyclic macrocycle. The mixture comprises a liquid dispersion.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The polymers comprise: non-conjugated crosslinkable homopolymers; and block copolymers comprising at least one conjugated polymer block and at least one block of a crosslinkable non-conjugated polymer that provides the crosslinkable structure, where the conjugated polymer block is non-covalently bonded to the outer surface of the CNT or the graphene. The block copolymers provide all polymers in the aerogel, the CNT or graphene. The conjugated polymer block comprises poly(3-hexylthiophene) (P3HT), poly(aryleneethynylene), polypyrrole, polydioxythiophene, polydioxypyrrole, polycarbazole, polyfuran, polydioxyfuran, polyacetylene, poly(phenylene), poly(phenylene-vinylene), poly(arylene ethynylene), polyaniline, polypyridine, poly(thienylene vinylene), polysilole, poly(dithensilole), poly(dibenzosilole), poly(dithienopyrrole), poly(thiazole), poly(thieno(3,2-6)thiophene), poly(thieno(3,2-6)thiophene vinylene), poly(aryleneethynylene), polypyrrole, polydioxythiophene, polydioxypyrrole, poly(thienylene vinylene), polysilole, poly(dithensilole), poly(dibenzosilole), poly(dithienopyrrole), poly(thiazole), poly(thieno(3,2-6)thiophene), poly(thieno(3,2-6)thiophene vinylene), or poly (benzothiadiazole). The crosslinkable non-conjugated polymer comprises poly(3-(trimethoxysilyl)propyl methacrylate) (PTMSPMA), poly(3-(trimethoxysilyl)propyl acrylate), poly(glycidyl methacrylate), poly(glycidylacrylate), or poly(chloromethylstyrene). The block copolymers comprise P3HT-b-PTMSPMA. Preferred Method: The step of crosslinking comprises: hydrolysis and condensation, irradiation, or thermal inducement; and adding a crosslinking agent that forms crosslinks between respective blocks of the crosslinkable non-conjugated polymer. EXAMPLE - No suitable example given.