NANOTECHNOLOGY UPDATE: Killing cancer with “nanodiscs.” “Laboratory tests found the so-called “nanodiscs”, around 60 billionths of a metre thick, could be used to disrupt the membranes of cancer cells, causing them to self-destruct. The discs are made from an iron-nickel alloy, which move when subjected to a magnetic field, damaging the cancer cells, the report published in Nature Materials said.”