The uploaded figures describe the ability of glassy carbon as a diffusion barrier against radioactive Selenium (one of the fission products found in nuclear waste). Specifically, the use of Transmission Electron Microscopy (TEM), Raman microscopy, Rutherford Backscattering Spectrometry (RBS), and Secondary Ion Mass Spectrometry (SIMS) for characterizing the changes induced by implantation temperatures and annealing in Selenium ion-implanted glassy carbon provides valuable insights into the material's behaviour and suitability for nuclear waste storage.