The physics that won a Nobel Prize three years ago has found an unlikely commercial application in a Dutch cleanroom, where a handful of semiconductor veterans believe they can solve one of chipmaking's thorniest measurement problems.
Invisix, an Eindhoven startup spun out from lithography giant ASML, announced a €20 million seed round on June 1, 2026—an unusually large haul for a hardware company still demonstrating its first system. The money comes from an investor roster that reads like a who's who of semiconductor industrials: Hitachi Ventures and Transition Ventures co-led, joined by imec.xpand, Doosan Investment, and a "tier-1 semiconductor manufacturer" the company declines to name.
That reticence hasn't stopped industry speculation. Korea Economic Daily reported in February that Samsung Electronics was in discussions to take a stake to bolster yields at its 2nm process node, where conventional measurement tools are increasingly blind to what's happening inside the chip. Invisix won't confirm, but the strategic calculus is clear enough: as transistors shrink and stack into three-dimensional labyrinths, seeing what you've built becomes nearly as hard as building it.
When Light Stops Working
The problem is wavelength. Optical metrology—the industry workhorse for decades—relies on visible and ultraviolet light to measure feature sizes and defects. But gate-all-around transistors, the architecture now entering mass production, bury critical structures beneath layers of silicon and metal. Light bounces off the top; it doesn't penetrate deep enough to reveal whether the devices below are forming correctly.
Invisix's answer is soft X-rays, generated through a laser physics trick called High Harmonic Generation. Short, intense laser pulses convert into broadband X-ray light capable of probing buried interfaces without slicing the wafer open. The technique shares roots with attosecond pulse research—work that earned Pierre Agostini, Ferenc Krausz, and Anne L'Huillier the 2023 Nobel in Physics.
"Industry needs new, non-destructive metrology capable of looking inside increasingly 3D chips," Christina Porter, Invisix's co-founder and CEO, said in a prepared statement. Porter, a PhD physicist who spent years inside ASML's advanced metrology group, tends toward understatement. Perhaps she's aware that promising to upend entrenched players like KLA and Applied Materials requires more than a compelling lab demo.
The ASML Inheritance
Invisix didn't start from scratch. The company licensed what it describes as a "substantial technology package" from ASML, which had been developing soft X-ray metrology internally for over a decade. Co-founder Sietse van der Post, also an ASML veteran, worked alongside Porter on early demonstrations of the platform. In 2023, the pair presented results with Intel and imec showing gate-all-around measurements at what they claimed was production-relevant resolution.
ASML's decision to spin out the technology rather than commercialize it directly raises questions—ones the lithography giant, famously secretive, hasn't addressed publicly. One possible read: the market for soft X-ray metrology remains unproven, and ASML preferred to derisk through a separate venture. Another: the company saw limited synergy with its core lithography business and opted to preserve optionality through an equity stake.
Either way, Invisix inherited more than intellectual property. It relocated a 300mm-wafer-capable testbench to a new cleanroom facility in Eindhoven, where it's running evaluations with chipmakers and research consortia. The company's LinkedIn profile showed between 11 and 50 employees as of early June, with open requisitions spanning software development, supply chain management, and applications engineering. Roald Dogge, previously chief operating officer at Dutch precision equipment maker NTS, joined as COO.
The Funding Map
Hitachi Ventures, which manages over $1 billion in assets, has a history of early bets on industrial technologies that take years to mature. Imec.xpand, the investment arm of Europe's premier nanoelectronics research hub, draws backing from Samsung, Applied Materials, and SK hynix—competitors who nonetheless share an interest in advancing metrology capabilities.
That Doosan Investment, a South Korean firm, participated alongside an unnamed strategic investor adds weight to the Samsung rumors, though it proves nothing. Korea's chipmakers have been aggressive in securing access to advanced toolsets as they race TSMC for process leadership.
What's notable is the round size. Seed financings for hardware startups rarely exceed single-digit millions, particularly in Europe. Twenty million euros suggests investors see more than a research project; they're betting on a path to commercial shipments, even if timelines remain vague. Invisix hasn't disclosed when its first system will ship, nor what throughput and accuracy specifications it's targeting. For a semiconductor tool to matter, it needs to handle hundreds of wafers per day at metrology-grade precision—a far cry from a cleanroom prototype.
What Comes Next
The company says proceeds will fund headcount expansion, accelerate system development, and support ongoing customer evaluations. Translation: Invisix is still proving the technology works outside controlled lab conditions, a process that typically takes years and burns capital faster than founders expect.
Semiconductor metrology is a tough market to crack. KLA dominates optical inspection; the company's installed base and decades of process recipes create switching costs that startups struggle to overcome. Incumbents also have deep pockets for R&D, and they're not ignoring the limits of optical measurement. If soft X-ray scatterometry proves essential, KLA or Applied could acquire a competitor, develop the technology in-house, or simply wait for Invisix to stumble.
Still, the backing from Hitachi, imec, and a likely strategic suggests Invisix has shown enough to warrant attention. Whether that translates into production tools shipping to fabs will depend on execution—engineering a reliable, cost-effective system that meets the unforgiving demands of high-volume manufacturing.
For now, the company occupies that uncertain space where promising physics meets industrial reality. Porter and her team have the technology pedigree, the funding, and the industry relationships. What they need is time, and in semiconductors, time is the one thing no one has in surplus.
