ARCHER2 Calendar June 2025

A 'shaking' droplet: mapping lithium atom trajectory

Dr Ruitian He, Department of mechanical engineering, University College London

This image depicts a slice of a 'shaking' droplet, showing large fluctuations due to atom motion and gas release during the droplet explosion. We conducted reactive molecular dynamics simulations using LAMMPS to visualize the atom dynamics within the droplet on ARCHER2. The streamline in this image represents the trajectory of lithium atoms over 1 femtosecond, demonstrating rigorous motion of lithium atoms during the explosion. This image was generated using Ovitio post-processing software.

This image was published on the June page of the ARCHER2 2025 printed calendar.