For decades, chipmaking supremacy has been concentrated in Asia, led by Taiwan’s TSMC and the Netherlands’ ASML. Each generation of hardware advances pushed U.S. manufacturers further from the frontier, creating a dependence that blended technological convenience with geopolitical risk. That dependency became a national talking point long before it became a policy crisis. Now, a small startup in San Francisco believes the cycle can be reversed.
Substrate, founded by entrepreneur James Proud, has raised $100 million at a valuation above $1 billion to develop a new chipmaking tool that could rival ASML’s lithography systems. The company’s technology uses X-ray light to etch microscopic features comparable to the most advanced chips on the market. Investors include In-Q-Tel, General Catalyst, Valor Equity Partners, Allen & Co, and Long Journey Ventures. If the process works at scale, it could reduce manufacturing costs and open a new chapter for domestic chip production.
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Engineering breakthrough
Substrate has developed a new X-ray lithography tool intended to rival ASML’s dominance in chip fabrication. ASML has long led the field with extreme ultraviolet lithography, a technology requiring unmatched precision. Substrate’s X-ray-based approach aims for similar resolution at a fraction of the cost, a claim demonstrated at U.S. National Laboratories and in its own facilities. The company has yet to release full independent verification, but early results suggest its concept is technically sound and commercially plausible.
Strategic investors
The investor group backing Substrate includes both intelligence-linked and venture players. In-Q-Tel’s participation indicates strategic alignment with national security interests, while Valor Equity Partners brings experience from high-capital manufacturing projects such as SpaceX. The investor mix shows a convergence between government-backed innovation priorities and private capital appetite for hardware reinvention.
Policy momentum
The effort also aligns with renewed political focus on repatriating semiconductor capabilities. President Donald Trump’s administration has made domestic chipmaking a central goal, including taking a stake in Intel. Commerce Secretary Howard Lutnick has reportedly engaged with Substrate’s leadership, although the company emphasizes it has not received direct government funding. By framing its work as commercially viable, Substrate maintains flexibility that government-funded ventures sometimes lack.
Market implications
If Substrate succeeds, the impact would mirror the way SpaceX lowered barriers to orbital access. Cheaper chipmaking tools would cut fabrication costs and allow new entrants to compete with established foundries. That could reshape cost structures across AI hardware, data centers, and advanced electronics. The technical barrier remains steep, but success would reorient supply chains around domestic infrastructure rather than overseas monopolies.
Near-term test
The next milestone lies in proving sustained precision and throughput. Building a complete foundry to rival TSMC will require billions in additional investment and years of refinement. Demonstrations at national labs show promise, yet commercialization depends on repeatable, reliable production under industrial conditions. How Substrate scales will define whether the U.S. semiconductor revival remains aspirational or tangible.
The rise of Substrate suggests a broader rethinking of industrial ambition. Private capital, once focused almost entirely on software, is circling back to hardware as the next arena for defensible innovation. If cost-efficient manufacturing gains traction, the U.S. semiconductor revival could evolve from policy objective to competitive advantage. The challenge will be sustaining momentum before incumbents reclaim the narrative.
Reference
Cherney, M. A. (2025, October 28). U.S. startup Substrate announces chipmaking tool that it says will rival ASML. Reuters. https://www.reuters.com/world/asia-pacific/us-startup-substrate-announces-chipmaking-tool-that-it-says-will-rival-asml-2025-10-28/
