In collaboration with researchers from the Department of Quantum Matter Physics at the University of Geneva, we study the gap between strontium titanate membranes and Nb-doped strontium titanate carrier substrates onto which they have been transferred. In thermally annealed samples, raster scanning an intense STEM electron beam causes the residual Sr, Ti and O atoms in the gap to restructure into a crystalline lattice that bridges the gap. After this ionically bonded bridge is formed, rearrangement continues, as crystalline lattice either side is locally twisted into better crystallographic alignment. This radiolysis driven mechanism creates a pathway for the deterministic writing of crystal structure for new functionalities. Find out more in our open access Nano Letters publication!