Abstract
Recently, with the progress of nanomachining, nanosized devices have been developed. In addition to nano-scale experimental investigation, molecular dynamic simulation is a powerful tool to study nano-scale processes under different operating conditions. Although continuum mechanics is well accepted in describing the dynamics ofprocess at the macro-scale, continuum modelling is not applicable when nano-scale or molecular-level physics becomes dominant. This study develops a simulation method to study the jet process at nano-scale. The elementary works of this study are as following. First, we analyze theconformational dynamics and entanglement phenomenon of polymer chains during glass transition. Second, the rheology of polymer thin film under various shear conditions is simulated. Furthermore, the applicationof parallel algorithm is included in this simulation method. Based on the development of the simulation method in nano-scale, we will analyze the process of nanojet with various compressing velocities, pushing periods and solid-liquid wettability surfaces. Results that illustrate variousfeatures are presented to aid in the comprehension of the nanojet processes.