The EUV Machine: The $400 Million Device That Built the AI Revolution

The Machine You’ve Never Heard Of That Built the Modern World

“This might be one of the most wildest machines that you’ve never heard of. It costs more than a Boeing 787. It’s the size of a bus. And without it, there is literally no AI revolution.”

Hidden in semiconductor fabs around the world is a machine so complex, so precise, and so essential that it has quietly become the foundation of modern technology. Built by a single company in the Netherlands, this machine prints every advanced chip in the world—from the processors in your iPhone to the GPUs training ChatGPT.

“No EUV. I mean, there would be no iPhones, no GPUs, no AI models.”

This is the story of EUV lithography: the machine that built the AI revolution.

The Problem: How Do You Print Billions of Transistors Smaller Than a Virus?

The Scale Challenge

“How do you print billions of transistors onto a chip when each one is smaller than a virus or a grain of dust?”

This is the fundamental challenge of modern chip manufacturing. At 5 nanometers, 3 nanometers, and soon 2 nanometers, we’re operating at a scale of just a few dozen atoms wide. To put this in perspective:

• A virus is typically 20-300 nanometers
• A grain of dust is around 10,000 nanometers
• Modern transistors are smaller than both

“At this scale, using normal light to print patterns is like trying to draw eyelashes using a giant paint roller.”

Why Normal Light Doesn’t Work

“For context, this deep is used for older chips physically cannot print features below this without complex multi-patterning. And that is why EUV had to exist.”

Traditional lithography uses deep ultraviolet (DUV) light, which physically cannot print features below certain sizes without complex multi-patterning techniques. As chips got smaller, the industry needed a fundamentally different approach.

“AI models keep getting bigger. Bigger models need faster chips. Faster chips need smaller transistors.”

The demand for more powerful AI models created a feedback loop:

• Bigger AI models require more compute
• More compute requires faster chips
• Faster chips require smaller transistors
• Smaller transistors require EUV lithography

What Is EUV? Extreme Ultraviolet Light

The Definition

“EUV stands for extreme ultraviolet light. It’s a wavelength of 13.5 nm and it’s so tiny that glass absorbs it instantly.”

EUV (Extreme Ultraviolet) light operates at a wavelength of 13.5 nanometers—so small that it behaves completely differently from visible light:

• Glass absorbs it instantly—you can’t shine it through a lens
• Normal mirrors don’t work—you can’t guide it with standard optics
• Regular lasers can’t produce it—LEDs, lamps, and standard lasers can’t generate EUV

“You can’t guide it with normal mirrors and you can’t produce it with LEDs, lamps, or regular lasers.”

This creates a fundamental challenge: How do you generate and control light that can’t be produced or guided by normal means?

The Sci-Fi Solution: Exploding Tin Droplets

Creating Plasma Hotter Than the Sun

“Here’s a really kind of it feels almost like a sci-fi part. Inside an EUV machine, tiny droplets of molten tin, which by the way, each are only 25 microns wide, are shot through a vacuum at 70 m/s.”

The solution sounds like science fiction:

1. Tiny droplets of molten tin (25 microns wide) are shot through a vacuum at 70 meters per second
2. A first laser pulse flattens each drop
3. A second, much stronger pulse hits it again and vaporizes it into plasma
4. The plasma reaches temperatures hotter than the surface of the sun

“A first laser pulse flattens each drop. A second, much stronger pulse hits it again and vaporizes it into a plasma hotter than the surface of the sun.”

The Technical Details

“The CO2 laser used is about 30 kilowatts and the plasma reaches around 220,000 C.”

The process is incredibly precise:

• CO2 laser: 30 kilowatts of power
• Plasma temperature: Around 220,000°C (hotter than the sun’s surface at ~5,500°C)
• Frequency: 50,000 times per second

“Let me repeat that. Modern chips start with exploding tin droplets 50,000 times per second.”

“This is the only practical way though for humans to have to generate EUV light.”

Every advanced chip in the world starts with this process: tin droplets exploding into plasma 50,000 times per second to generate the EUV light needed to print transistors.

The Flattest Mirrors on Earth

Why Normal Mirrors Don’t Work

“You can’t use the lenses and normal mirrors as we mentioned earlier don’t work either. So why is this first of all? Well, because EUV is so energetic that anything imperfect will absorb it.”

Once you’ve generated EUV light, you face another problem: You can’t use normal optics to guide it. EUV light is so energetic that any imperfection in a mirror will absorb it, making it unusable.

ASML’s Solution: Mirrors That Defy Physics

“ASML built something almost unbelievable which is the flattest mirrors ever created by human.”

ASML solved this with mirrors so precise they seem to defy physics:

“Each mirror is made of 40 to 50 alternating layers of Molly denim. Molly denim and silicon, which are polished to within 0.1 nanometers, which is one out of 1,000th the width of a DNA strand.”

The specifications are mind-boggling:

• 40-50 alternating layers of molybdenum and silicon
• Polished to within 0.1 nanometers (one-thousandth the width of a DNA strand)
• If scaled to the size of the United States, the tallest bump would be just a few millimeters

“And if one of these mirrors were scaled to the size of say the United States, the tallest bump would be just a few millime. That’s how perfect they have to be.”

The Optical System

“The EUV machine uses a whole series of these mirrors, each one shaping and bouncing the light through a vacuum chamber until it lands on the mask that contains a transistor pattern. And this near system is one of the most precise optical systems ever built.”

The EUV machine uses a series of these perfect mirrors to:

• Shape the light as it travels through a vacuum chamber
• Bounce it from mirror to mirror
• Guide it to the mask containing the transistor pattern

“EUV optics operate at less than 70% reflectivity per balance. So, the system is designed to use a few reflections or as few reflections as possible before reaching the wafer.”

Because each mirror reflects less than 70% of the light, the system minimizes reflections to preserve as much EUV light as possible before it reaches the wafer.

How EUV Prints a Chip

The Photoresist Process

“First up is a silicon wafer is coated with a chemical film called photoresist which is a material that reacts to EUV light.”

The printing process begins with a silicon wafer coated in photoresist—a chemical film that reacts to EUV light.

“When the patterned light hits the wafer the photoresist changes shape at nano scale and this creates openings exactly where the transistor gates will go.”

When the patterned EUV light hits the wafer:

• The photoresist changes shape at the nanoscale
• This creates openings exactly where transistor gates will go
• The process is repeated layer after layer

Layer-by-Layer Precision

“Then you simply simply develop edge deposit materials polish and start all over again. Now this happens layer after layer. Sometimes it can go between 50 and 100 layers depending on the chip and each layer must align to the one under it with a few atoms.”

The process is incredibly precise:

• 50-100 layers depending on the chip
• Each layer must align to the one under it with accuracy of just a few atoms
• Current alignment tolerances for leading-edge nodes are about 1.5 to 2.0 nanometer overlay accuracy

“Now, as a side note for all you techies out there, current alignment tolerances for leading edge nodes are about 1.5 to 2.0 nanometer overlay accuracy. Very accurate.”

“And this is how you get billions of transistors perfectly aligned in the space. I mean, without EUV, this level of precision is impossible.”

How EUV Enabled the AI Boom

The Hardware Scaling Revolution

“Here’s the part that most people really miss. AI didn’t explode because of the algorithms suddenly improving neural networks have existed for decades.”

This is a crucial point that many people miss: AI didn’t explode because algorithms suddenly got better. Neural networks have existed for decades. What changed was hardware scaling.

“AI exploded because hardware scaled dramatically. And that hardware scaling happened because EUV made smaller transistors possible.”

The Cascade Effect

“Because get this, smaller transistors equals more compute, higher bandwidth memory, more cores per chip, lower power per operation.”

Smaller transistors create a cascade of improvements:

• More compute per chip
• Higher bandwidth memory
• More cores per chip
• Lower power per operation

“I mean, this is how we got Nvidia’s H100, AMD’s MI300, Apple’s M3, and the GPUs that train chat GBT, and really every LLM.”

The Difference EUV Made

“You know, without EUV, we would still be stuck way in the past, and training GBT4 might take years instead of weeks.”

Without EUV:

• Training GPT-4 might take years instead of weeks
• AI models would be stuck at much smaller scales
• The AI revolution wouldn’t have happened

“It’s really the difference between AI is cool and AI is everywhere.”

EUV didn’t just enable better chips—it enabled the entire AI revolution by making the hardware powerful enough to train massive models in reasonable timeframes.

ASML: The Company That Builds the Modern World

The Only Company on Earth

“There is only one company on earth on earth that makes UV machines which is ASML and they’re from the Netherlands.”

ASML (Advanced Semiconductor Materials Lithography) is the only company in the world that makes EUV machines. Based in the Netherlands, they have a near-monopoly on the technology that powers every advanced chip.

The Machine Specifications

“Each machine costs around two to 400 million, takes 100,000 parts, needs 40 shipping containers to transport, and requires on-site assembly, all by ASML engineers.”

The specifications are staggering:

• Cost: $200-400 million per machine (more than a Boeing 787)
• Size: The size of a bus
• Parts: 100,000 individual components
• Transport: Requires 40 shipping containers
• Assembly: On-site assembly by ASML engineers

“Now, there are only a few of these in the world. I think it’s a few dozen actually.”

The Global Impact

“Every cutting chip, every cutting edge chip from iPhones GPUs to supercomputers to the processors training every AI model is printed on a machine that uses this exploding tin that we spoke about.”

Every advanced chip in the world is printed on an ASML EUV machine:

• iPhones processors
• GPUs (Nvidia, AMD)
• Supercomputers
• Processors training every AI model

“When you think of EUV, EUV isn’t just a machine. It’s really the foundation of the entire modern tech stack.”

The Foundation of Modern Technology

More Than Just a Machine

“When you think of EUV, EUV isn’t just a machine. It’s really the foundation of the entire modern tech stack.”

EUV lithography isn’t just a manufacturing tool—it’s the foundation that makes modern technology possible:

• Smartphones with powerful processors
• AI models that can understand language and generate content
• Supercomputers that solve complex problems
• The entire digital economy

The Quiet Revolution

“And that is why it is one of the most incredible machines that you’ve never heard of and the one that built the entire AI revolution.”

Most people have never heard of EUV lithography, yet it’s the machine that:

• Built the AI revolution by enabling the hardware needed for massive models
• Powers every advanced chip in the world
• Makes modern technology possible at the scale we have today

Conclusion: The Machine That Built the Future

The EUV lithography machine is a marvel of engineering:

• Exploding tin droplets creating plasma hotter than the sun
• Mirrors so flat they seem to defy physics
• Light so small it can’t be guided by normal optics
• Precision measured in atoms for billions of transistors

Built by a single company in the Netherlands, this $400 million machine is the foundation of:

• Every iPhone processor
• Every GPU training AI models
• Every supercomputer solving complex problems
• The entire AI revolution

“Without EUV, there is literally no AI revolution.”

As AI models continue to grow and demand even more powerful chips, EUV lithography will remain the essential technology that makes it all possible. It’s the machine you’ve never heard of that built the modern world.

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