Abstract
Due to the requirements for ultra-small head-media spacing hard disk drives (HDDs), the mixture of lubricants may become feasible and promising alternative for future HDD. In this paper, molecular dynamics simulations with a bead-spring model were employed to examine the detailed structure, conformation, and dynamics of binary mixture lubricant films by analyzing the anisotropic radius of gyration and the self-diffusion coefficient as a function of volume fraction. Our simulation results indicate that the binary mixture monolayer can be more suitable as a disk lubricant in comparison with the single component. The conformation and mobility change by tuning the volume fraction was discussed in conjunction with the optimal lubricant selection.
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