Psychoplasm

Psychoplasm was a material from which artificial micro-universes known as psychoscapes could be created, including the Dalek-scapes of the Dalek Dome. If the psychoplasmic constructs within a psychoscape left the scape's dedicated chamber within the Dome, as demonstrated when the Fourteenth Doctor's TARDIS transferred them out, then the psychoplasm would begin to melt, as the material could not survive beyond the dome for long. (COMIC: Liberation of the Daleks ^[+]Loading...["Liberation of the Daleks (comic story)"])