 Clarke envisions a microscopically thin (in his demonstrator sample) but strong "hyperfilament" that makes the elevator possible.Although the hyperfilament is constructed from "continuous pseudo-one-dimensional diamond crystal", Clarke later expressed his belief that another type of carbon, Buckminsterfullerene, would play the role of hyperfilament in a real space elevator.The latest developments in carbon nanotube technology bring the orbital elevator closer to possible realisation.