Crash Course: The Machine Beneath the AI Revolution
Forget LLMs. Before AI could scale, humanity first had to learn how to print its computing power with light.
The biggest misconception about AI
Few people realize that much of our technological civilization, including advanced AI, rests on something that sounds almost impossible:
printing chips with light. But not with ordinary light.
Visible light is far too blunt to print the smallest structures demanded by today’s most advanced processors.
And that leaves the technology industry facing a question as simple as it is brutal: Can we keep shrinking chips fast enough to build all the technological wonders now being promised?
Because the process required to do it is so absurd that it sounds like the opening scene of a science-fiction movie.
The adventure, however, begins humbly, with one of the most ordinary elements in the periodic table:
Yep. Not some exotic substance harvested from a meteorite. Not a rare element available only to governments.
Nope.
Just a common, inexpensive metal, melted into a droplet barely a third the width of a human hair.
Then the real madness begins. Good luck with that. Twice.
First, you need a laser pulse to strike a single tin droplet and flatten it into a tiny disk.
Then, a fraction of a microsecond later, you must strike that same microscopic droplet with a second, vastly more powerful pulse.
Before a single second has passed, tens of thousands of droplets have already met the same fate. Droplet after droplet, the swarm ignites, each tiny sphere erupting into incandescent plasma at around 220 thousand °C, nearly forty times hotter than the surface of the Sun.
For one fleeting instant, you have created a tiny artificial star inside a laboratory. And from that star comes the prize you were searching for:
extreme-ultraviolet light EUV
The light capable of printing the smallest structures inside the most advanced chips on Earth.
There is only one problem.
The moment EUV light touches almost anything, it disappears.