Author/Authors :
Arnas، نويسنده , , C. and Mouberi، نويسنده , , A. and Hassouni، نويسنده , , K. and Michau، نويسنده , , A. and Lombardi، نويسنده , , G. and Bonnin، نويسنده , , X. and Bénédic، نويسنده , , F. and Pégourié، نويسنده , , B.، نويسنده ,
Abstract :
Nanoparticles are produced in argon glow plasmas where carbon is introduced by sputtering of a graphite cathode. A scaling law of growth is reported on as a function of the discharge time. Two successive stages of growth of concomitant agglomeration and carbon deposition are observed, followed by a final stage of growth by carbon deposition. A model of formation of molecular precursors by coagulation of neutral clusters on the one hand and of neutral-negative clusters on the other hand is presented, based on formation enthalpy and cluster geometry.
