The Origins of the Ultraviolet Lithography Machine

The challenge has always been to print ever smaller features on chips and for a long time visible light was perfectly acceptable printing device because it had a wavelength of several hundred nanometers. A couple decades ago we got to the point where chips already had features that were so small visible light wasn't small enough or powerful enough to do the printing. So this is the next problem how does that get solved you need to make a jump to a very different light source with a much smaller wavelength okay? That's the origins of the UV the extreme ultraviolet lithography machines that we have today. The machines themselves create UV light by having balls of tin 30 microns wide so 30 million centimeter wide falling through a