Hi @mofeta.
The team simulated the sequential deposition of individual carbon atoms on a carbon substrate. Using a previously developed automatic learning algorithm they calculated the interatomic potentials between the atoms and introduced that information into the molecular dynamics simulations. This procedure allowed them to map the density of the films after each impact. They discovered that the incoming atoms created a pressure wave that moved the atoms away from the impact site, so that each impact decreased the density of the atoms on the surface of the film and increased it within the film. Inside the film, the density change caused a high fraction of carbon atoms to acquire a tetrahedral hybridization: exactly the same state as the carbon atoms in the diamond. The simulated density profiles agree with those derived experimentally.
I have found a similar text here. You changed a few words but it is still plagiarism. Please refrain from doing that in the future. Read, understand and write it in your own words.