Atum Works represents a fundamental reimagining of semiconductor manufacturing at a critical inflection point in the industry. The company is developing 3D lithography technology capable of fabricating multi-material 3D structures with 100 nm resolution at wafer scale, positioning itself to reduce chip production costs by approximately 90% compared to conventional 2D lithography methods.[1][3] Rather than continuing the decades-long pursuit of transistor miniaturization through planar processes, Atum Works is shifting the manufacturing paradigm entirely—scaling process complexity through materials and three-dimensional architecture instead of incremental layer reduction. This approach addresses a fundamental challenge: the semiconductor industry has reached the practical limits of traditional scaling, and the company offers a commercially viable alternative that could unlock the next decade of semiconductor progress.[3]
The startup serves a broad ecosystem of customers requiring complex fabrication at nanoscale precision, with initial applications spanning packaging, photonics, sensors, and advanced materials beyond traditional logic chips.[4] Their early traction includes a letter of intent for collaborative development with NVIDIA and conversations with multiple customers, signaling genuine market demand for their manufacturing capability.[1]
Origin Story
Atum Works was founded in 2024 by Lucas Pabarcius, Malcolm Tisdale, and Matteo Kimura, a team of physicists and systems engineers with deep roots in advanced technology development.[1][2] The founders previously worked at Caltech and NASA, where they matured multiple nascent technologies and earned recognition including NASA's Most Visionary Concept and Best Product Development awards.[1][3] This background is crucial: the team didn't emerge from venture-backed software startups but rather from institutions where fundamental physics and engineering breakthroughs are the norm. Their experience translating laboratory innovations into production-ready systems provided the technical foundation and credibility necessary to tackle nanomanufacturing at scale.
The company's advisory board reinforces this pedigree, including Dr. H.-S. Philip Wong, Chief Scientist at TSMC, the world's leading semiconductor foundry.[3] This connection to the industry's most advanced manufacturing operation signals both validation and potential pathways to commercialization. The idea emerged from recognizing that semiconductor manufacturing had hit a wall—the traditional path of shrinking transistors was no longer economically or physically viable. Rather than accept this constraint, the team developed a fundamentally different approach: 3D printing at nanoscale precision. The company recently crossed critical cost thresholds that made the technology commercially viable, leading to their acceptance into Y Combinator's Spring 2025 batch and the establishment of their manufacturing facility and lab in Mountain View, California.[1][2]
Core Differentiators
3D Manufacturing at Nanoscale Precision
Atum Works' core differentiator is its 3D lithography process, which operates fundamentally differently from conventional semiconductor manufacturing. While traditional methods use planar lithography with light exposure to pattern circuits on silicon wafers, Atum Works deposits materials at precise locations in three-dimensional space, enabling fabrication of complex multi-material structures.[4] The technology achieves 100 nanometer resolution at wafer scale, a capability that traditional 2D lithography cannot match for 3D structures.[1][3]
Cost Economics
The company claims its approach reduces production costs to approximately 1/10th that of today's 2D lithography—a 90% cost reduction.[1][3][4] This dramatic improvement in unit economics is not merely incremental optimization but represents a different manufacturing paradigm. For applications where 3D complexity is advantageous, this cost structure is transformative.
Materials-Based Scaling Rather Than Layer Reduction
Traditional semiconductor scaling has relied on shrinking feature sizes through improved lithography tools and processes. Atum Works inverts this logic: instead of scaling through layers, the company scales through materials selection and 3D architecture. This approach sidesteps the physical and economic constraints that have made sub-5nm manufacturing increasingly expensive and difficult.[3]
Proven Team with Institutional Credibility
The founding team's background at Caltech and NASA, combined with advisory board representation from TSMC's leadership, provides both technical credibility and industry connections that most early-stage manufacturing startups lack. This is not a team learning manufacturing for the first time; they are experts translating advanced physics into production systems.
Role in the Broader Tech Landscape
Atum Works sits at the intersection of three powerful trends reshaping technology infrastructure. First, the semiconductor industry faces a genuine scaling crisis—Moore's Law has slowed dramatically, and the cost of advancing to the next process node has become prohibitive even for the largest chipmakers.[3] Second, the demand for computing power continues to accelerate, driven by artificial intelligence, data centers, and edge computing, creating urgent pressure for manufacturing innovation. Third, there is growing recognition that not all chips require the most advanced process nodes; many applications—sensors, photonics, RF components, advanced packaging—benefit more from 3D complexity and integration than from extreme miniaturization.[4]
Atum Works' timing is fortuitous. The company enters a market where incumbents (ASML, applied materials, and foundries like TSMC) are struggling with the economics of traditional scaling, creating space for alternative approaches. The NVIDIA collaboration signals that even the most demanding customers recognize the potential value of 3D manufacturing for specific applications. More broadly, Atum Works represents a shift in how the industry thinks about manufacturing progress—not as a linear continuation of historical trends, but as a fundamental reimagining of the manufacturing process itself.
The company's influence on the broader ecosystem could be substantial. If 3D nanomanufacturing proves viable at scale, it could democratize access to complex chip fabrication, enabling smaller companies and specialized applications to compete with traditional foundries. It could also accelerate the development of heterogeneous chip architectures, where different functional blocks are optimized for their specific requirements rather than forced into a single process node.
Quick Take & Future Outlook
Atum Works is pursuing one of the most ambitious manufacturing challenges in technology: scaling a fundamentally new fabrication process from laboratory prototype to commercial production. The company has clear advantages—exceptional team pedigree, early customer validation, and a technology addressing a genuine market need. However, significant challenges remain. The 100 nm resolution, while impressive for 3D structures, is approximately 20 years behind the leading edge of logic chip manufacturing, limiting applications to specialized domains rather than high-performance processors.[4] The viability of the technology will ultimately depend on its compatibility with existing manufacturing workflows and tools—a challenge that remains under discussion with potential customers.[4]
Over the next 2-3 years, Atum Works' trajectory will likely be defined by execution on early customer engagements, particularly the NVIDIA collaboration. Success will mean demonstrating that 3D nanomanufacturing can reliably produce complex structures at scale, with yields and costs that justify adoption. If the company achieves this, it could establish a new category of manufacturing capability that complements rather than replaces traditional foundries—handling applications where 3D complexity is the limiting factor rather than feature size.
The broader implication is profound: Atum Works represents a potential inflection point in how the semiconductor industry approaches manufacturing progress. Rather than continuing to chase ever-smaller transistors, the industry may increasingly embrace 3D complexity, heterogeneous integration, and specialized manufacturing processes optimized for specific applications. In this future, Atum Works could evolve from a specialized startup into a foundational infrastructure company reshaping how chips are designed and manufactured. The next decade will reveal whether the company can translate its exceptional technical foundation into sustainable commercial advantage.
