The existence of a plastic phase and a solid-liquid dynamical bistability region in small fullerene cluster (C(60))(7): molecular dynamics simulation

The properties of small fullerenol cluster (C60(OH)24)7: computer simulation

The nanosystem composed of only as few as seven fullerenols C(60)(OH)(24) molecules was studied using the molecular dynamics (MD) technique. The interaction was taken to be the full site-site pairwise additive Lennard-Jones (LJ) potential, which generates both translational and anisotropic rotational motions of each fullerenol. The radial distribution function, the mean square displacement, the Lindemann index, the translational and angular velocity correlation functions of fullerenol have been calculated for several energies of the nanosystem. We provide also the in-depth evidence of the solid-liquid phase transition in the investigated cluster. The comparison with the properties of pure fullerene cluster (C(60))(7) is provided. The study are motivated by the expected diverse biological applications of water-soluble fullerenols.

The dynamics of 4-cyano-4-n-pentylbiphenyl (5CB) mesogen molecules located between graphene layers--MD study

The ultrathin film of mesogenic molecules 5CB confined between graphene walls has been investigated by molecular dynamics (MD) technique. The dynamical observables of 4-cyano-4-n-pentylbiphenyl (5CB) were calculated for several temperatures: the mean square displacement, translational and angular velocity autocorrelation function, and second-rank order parameter.