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The Electrical Noise Of Carbon Fibers, R.O. Dillon
The Electrical Noise Of Carbon Fibers, R.O. Dillon
Roger Kirby Publications
The low-frequency excess electrical noise has been measured on carbon fibers with a wide range of crystalline perfection and corresponding electrical and mechanical properties. Fibers include those prepared from ex-PAN and ex-pitch polymers, and a catalytic-chemical vapor deposited filament. The extensional (Young's) moduli of these fibers varied from about 220 to 890 GPa (35–130 Msi), while the electrical resistivities varied from about 19 to 1 µΩ m. The low-frequency electrical noise of each fiber was found to be proportional to l2 and to vary as 1/fα, where f is the frequency and α is about 1.15. …