A chip-patterning machine the size of a London double-decker bus has set a new record: features just 8 nanometers wide, created in a single step. That makes them the smallest structures ever produced by a commercial lithography system, according to manufacturer ASML, and represents a significant leap in the industry's ability to keep pace with soaring demand for AI-capable processors.

The system was described at the SPIE Advanced Lithography + Patterning conference in San Jose, California, earlier this year by representatives of ASML, the Dutch company that holds a near-monopoly on the world's most advanced chip-making equipment.

How It Works

The machine uses extreme ultraviolet (EUV) light projected through a patterned mask onto silicon wafers coated with light-sensitive chemicals. Where the light hits, the chemicals harden in the desired pattern. The wafer is then chemically etched, and the process repeats to build up all the components of a modern chip — billions of tiny transistors and the ultra-fine wiring that connects them.

EUV lithography itself is not new. What sets this latest system apart is its dramatically improved optics. With a higher numerical aperture — a measure of how broadly the light can be directed — the machine achieves finer resolution and better image contrast. The result: chips that can fit 2.9 times more transistors than those made with the previous generation of EUV tools.

Meeting Monumental Demand

"The demands we see are monumental in the number of chips that are needed and the scaling that is needed," said Maarten Voncken, head of research metrology at ASML. The AI boom has created an insatiable appetite for faster, more efficient processors — and the only way to deliver them is to cram more computing power into each chip.

ASML has already shipped about ten of the new systems to customers including Intel and SK hynix. Each machine carries a price tag of roughly $400 million. These chipmakers will use the tools to produce their next generation of processors, designed to handle the computational demands of large language models, autonomous vehicles, and other AI workloads.

Keeping Moore's Law Alive

For decades, the chip industry has been guided by Moore's Law — the observation that the number of transistors on a chip roughly doubles every two years. It's not a law of physics, but it has held remarkably true thanks to relentless engineering advances. In recent years, though, the pace has been threatened as features shrink toward atomic scales.

The new high-NA (numerical aperture) EUV system offers a path forward. By using shorter-wavelength light and more sophisticated optics, it pushes the boundaries of what's physically possible in chip manufacturing. The jump from the previous generation's capabilities to 8nm single-step patterning represents one of the most significant leaps in lithography in years.

From Fringe Idea to Industry Standard

EUV technology was once considered a long shot. For years, engineers struggled to generate a powerful and reliable enough light source at the required 13.5nm wavelength. The breakthrough came from using giant, nearly perfect mirrors to reflect and focus the light — since no material can make a conventional lens at EUV wavelengths.

What began as a research curiosity is now the backbone of cutting-edge chip production. And with AI driving unprecedented demand for computing power, ASML's latest machine ensures that the chips of tomorrow will be smaller, faster, and more energy-efficient than anything available today.