China is exploring the use of a new extreme ultraviolet (EUV) light source in making its own lithography facility but technology experts said such an ambitious goal may take many years to achieve. …
Currently we produce EUV by spinning a disk of molten tin, then shooting the droplets with a laser to disperse them, then shooting them with a bigger laser to ionize them and emit EUV in all directions, which is then focused to a point via a dozen ultra precise lenses and mirrors.
This is an extremely finicky process and some fabs never get quite efficient enough to break even. When they do, nothing is changed, including the color of the paint of the room the fab is in.
Currently we produce EUV by spinning a disk of molten tin, then shooting the droplets with a laser to disperse them, then shooting them with a bigger laser to ionize them and emit EUV in all directions, which is then focused to a point via a dozen ultra precise lenses and mirrors.
This is an extremely finicky process and some fabs never get quite efficient enough to break even. When they do, nothing is changed, including the color of the paint of the room the fab is in.