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Abstract
Fabrication of Supports for Carbon Fullerenes Hard Disk Unit
Valter Bavastrello and Claudio Nicolini
We prepared nanostructured films in different thicknesses of fullerenes C60 by assembling 1 to 3 monolayers by means of Langmuir-Schaefer technique. We obtained the stock solutions by dissolving the fullerenes fullerenes C60 in toluene and then spreading at the air/water interface. The study of pressure-area isotherms showed a surface pressure of 40 mN/m as the best value for the deposition of monolayers. We also used the isotherms to determine the area per molecule parameter during the compression process; at the condensation point on packaging the C60 molecules we reached a value of 50 Å2/molecule, highlighting the formation of agglomerates of fullerenes upon compressing, confirmed by the study of scanning electron microscope acquisitions. We deposited monolayers on different substrates in order to characterize the morphology, and the conductivity of fullerenes C60 nanoassembled with the future goal to construct hard disk units.