The London Centre for Nanotechnology has quite an impressive facility. They recently opened up their doors to their cleanroom at the Imperial College in London. This lab is known for being “dust free” which allows for research and experimentation without contamination from dust particles. Like most cleanrooms, this one requires users to don protective clothing.
The photo above with the yellowish hue is from an optical lithography lab. Ultraviolet light is used to mark the surfaces of semiconductors. The cleanroom uses orange light to avoid ambient light interference, and this process gives the room a warm yellowish orange glow.
Do you want to learn more about this cleanroom? Check out the article at UCL. Photos courtesy of O. Usher (UCL Maps).