Molecular Dynamics Simulations of Structures of Amorphous Carbon Films via Deposition
The growth of amorphous carbon films via deposition is investigated using molecular dynamics simulation with a modified Tersoff potential. The impact energy of carbon atoms ranges from 1 to 50 eV and the temperature of the diamond substrate is 300 K. The effects of the incident energy on the growth dynamics and film structure are studied in a detail. Simulation results show that the mobility of surface atoms in the cascade region is enhanced by impacting energetic carbon ions, especially at moderate energy, which favors the growth of denser and smoother films with better adhesion to the substrate. Our results agree qualitatively with the experimental observation.
Jianmin Zeng, Taosen Li, Shaojian Ma, Zhengyi Jiang and Daoguo Yang
H. Q. Lan and Z. L. Kang, "Molecular Dynamics Simulations of Structures of Amorphous Carbon Films via Deposition", Advanced Materials Research, Vols. 194-196, pp. 2220-2224, 2011