In June 2015 Felix spent 10 days as a visiting scientist at MIT. He was hosted by Prof Keith Nelson’s group in the Department of Chemistry. The visit was spent collecting transient grating measurements on ion-implanted nuclear materials with collaborators from the Nelson group. Felix also gave a seminar in the Department of Nuclear Science and Engineering on the diverse effects of helium implantation in tungsten. This was a great opportunity to catch up with exciting nuclear work at MIT.