4 papers
Effects of Beam Size and Pulse Duration on the Laser Drilling Process
Nazia Afrin, Pengfei Ji, J. K. Chen +1
A two-dimensional axisymmetric transient laser drilling model is used to analyze the effects of laser beam diameter and laser pulse duration on the laser drilling process. The mode…
Molecular Dynamics Simulation of Condensation on Nanostructured Surface in a Confined Space
Li Li, Pengfei Ji, Yuwen Zhang
Understanding heat transfer characteristics of phase change and enhancing thermal energy transport in nanoscale are of great interest in both theoretical and practical applications…
Ab initio determination of effective electron-phonon coupling factor in copper
Pengfei Ji, Yuwen Zhang
The electron temperature dependent electron density of states, Fermi-Dirac distribution, and electron-phonon spectral function are computed as prerequisites before achieving effect…
Continuum-atomistic simulation of picosecond laser heating of copper with electron heat capacity from ab initio calculation
Pengfei Ji, Yuwen Zhang
On the basis of ab initio quantum mechanics (QM) calculation, the obtained electron heat capacity is implemented into energy equation of electron subsystem in two temperature model…