Some properties of solid fractal structures in carbon nanofibers.

Experimental data on the self-organization of massive fractal granules with a total volume of up to 1.1 cm3 consisting of carbon nanofibers with transverse dimensions within 50–70 nm and a length of up to 1000 nm are presented. The fractal granules have a density of 1.3 g/cm3, an elastic modulus of 37.4 MPa, and a fractal dimension of D = 2.95. The resistivity of this material is about three orders of magnitude greater than the values typical of pyrolytic graphite. The surface layers in the fractal granule are characterized by a Seebeck coefficient of about S ∼ 24 μV/K, whereas the bulk regions have S ∼ 11 μV/K. [ABSTRACT FROM AUTHOR]