Semiconductor manufacturing sits at the foundation of modern electronics, yet the barrier to entry is so extreme that meaningful research remains out of reach for most institutions. Extreme Ultraviolet lithography, the dominant technology for printing circuits onto silicon, relies on machines costing upward of $200 million that occupy entire rooms.
Faculty at the University of Texas at Austin‘s (UT Austin) Cockrell School of Engineering, working under the National Science Foundation‘s Future of Semiconductors program, set out to change that equation. The result: a tabletop EUV device built from stripped-down components, paired with a new printing technique that compresses days of processing into minutes.
Printing in Parallel: How Volumetric 3D Patterning Changes the Game
The core innovation lies not just in making the hardware smaller, but in rethinking how nanostructures are printed in the first place. Commercial EUV lithography builds 3D structures in 2D steps, a sequential process that works but accumulates time quickly.
“The actual printing might not take very long,” said Chih-Hao Chang, professor in the Walker Department of Mechanical Engineering and one of the lead authors of the study published in Nano Letters. “But the processing can take days.”
The UT Austin team developed volumetric 3D patterning to address this directly, printing multiple layers simultaneously rather than sequentially. Exposures that previously required days now take minutes. The table-top device itself is more modular and more versatile than its industrial counterpart, enabling research configurations that a $200M commercial machine would never accommodate.
The Cockrell team has already tested EUV materials developed by partners at UT Dallas and Johns Hopkins University, with additional material collaborations in the pipeline.
For now, the technique is limited to periodic structures, a constraint that makes it most relevant to memory chips and photonics applications. The longer-term ambition, still years out, is to push toward more complex geometries and faster printing speeds that could shrink the switches inside semiconductors further, translating directly into greater computing power per chip.
“Beyond semiconductor manufacturing, the ability to pattern 3D nanostructures can find applications in medicine for nanodrugs, quantum computing or synthesizing novel materials,” said Saurav Mohanty, the study’s first author and a recent PhD graduate.
Breaking the Access Lock on Semiconductor Research
The strategic gap the UT Austin team is addressing is not primarily technical, it is economic. Semiconductor research has long been constrained by the same barrier as semiconductor production: the infrastructure required to explore new ideas costs as much as building a small factory. The dominant logic driving this kind of research is democratization, allowing researchers to create and test advanced hardware far from traditional manufacturing centers, rather than being dependent on a handful of institutions with access to industrial-scale equipment.
This effort fits within a broader wave of academic initiatives trying to make nanoscale fabrication more open and iterative. Engineers at UT Austin are developing Holographic Metasurface Nano-Lithography, a separate approach aimed at making electronics packaging for semiconductor chips faster, more efficient, and more sustainable, backed by a $14.5 million DARPA grant involving partners including Northrop Grumman and NXP Semiconductors.
Separately, researchers at the University of Dayton developed an Opto-Thermo-Mechanical nano-printing technique capable of printing structures smaller than 100 nanometers using low-cost laser beams outside of a vacuum environment, specifically designed to lower costs and allow error correction during production, addressing the same access problem from a different technical angle.
The common thread across these efforts is not just speed or resolution, it is the ambition to turn semiconductor research from a capital-intensive industrial activity into something universities and smaller research groups can pursue iteratively. The UT Austin tabletop EUV device is a concrete step in that direction.
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Featured image shows researchers work with equipment in the Cockrell School of Engineering cleanroom. Photo via Cockrell School of Engineering.
