3D printing has always been defined by one fundamental constraint: building objects layer by layer. Whether it’s FDM, SLA, or SLS, every major 3D printing technology stacks thin slices of material on top of each other — a process that can take hours or even days for complex geometries. But what if you could skip the layers entirely and print an entire 3D object in a single flash of light?

That’s exactly what researchers at the University of Utah and the University of Texas at Austin have achieved. Their holographic 3D printing technique, published in the journal Science Advances, can fabricate complex three-dimensional structures — including hollow objects with internal voids — in as little as 0.6 seconds.

How Holographic 3D Printing Works

Traditional laser-based 3D printing methods like SLA (stereolithography) work by tracing a laser across a vat of liquid resin, hardening it one thin layer at a time. The Utah team’s approach is fundamentally different. Instead of scanning the laser point by point, they project an entire 3D light pattern into the resin simultaneously using a specially designed holographic mask.

The key innovation is a nanopatterned optical mask that sits in front of the laser source. This mask compensates for the way light bends and scatters as it passes through the liquid resin, ensuring that only the regions intended to become solid are exposed to enough light to cure. The unexposed resin simply washes away, leaving behind a fully formed 3D structure.

“We engineer the way light flows through the resin such that there are bright regions where we want curing to happen — the solid regions of the print — and darker regions where we don’t,” explains Professor Rajesh Menon, who led the research at the University of Utah’s Department of Electrical and Computer Engineering.

From Tubes to True 3D: The Hollow Breakthrough

The team’s earlier work, published in July 2026, demonstrated the technique with microtubule arrays — long, thin tubes with hollow centers. While impressive (with dimensional ratios of 120:1), those prints only had voids along their length and width. Professor Menon described them as “extended 2D” rather than true 3D.

The new paper changes that. By tweaking the chemistry of their photopolymer resin and using advanced computational design for the optical masks, the team can now create objects with hollow voids along all three axes. They demonstrated this by printing a hollow cylinder and a hollow cube — structures that would be impossible with their earlier approach.

The trick lies in the difference between light exposure timescales and curing timescales. Light exposure happens orders of magnitude faster than the polymer crosslinking reaction. By carefully engineering the mask pattern, the researchers can keep certain regions dark enough to prevent curing while allowing adjacent regions to fully harden.

The Numbers: Speed, Resolution, and Scale

The performance figures are striking:

• Print speed: 0.6 seconds for a complete 3D object (compared to hours for traditional SLA)
• Resolution: 19 micrometers within a 1-centimeter depth range
• Scale: Millimeter-scale objects (currently limited by the optical system)
• Process: Single exposure — no layer-by-layer buildup required

While the current print size is limited to millimeter-scale objects, the researchers believe the technique can be scaled up with improved optical systems. The fundamental principle — projecting a complete 3D light distribution in one shot — doesn’t inherently limit the size of prints.

What This Means for the 3D Printing Industry

The implications of sub-second 3D printing extend far beyond academic curiosity. For industries that need rapid prototyping or small, high-precision parts — microfluidics, biomedical implants, optical components, and electronics — this technology could be transformative.

Current high-resolution 3D printing methods like two-photon polymerization can achieve similar precision but require hours to complete a single print. Holographic 3D printing offers comparable resolution at roughly 10,000 times the speed.

For the broader consumer and industrial 3D printing market — dominated by Chinese manufacturers like Bambu Lab, Creality, and Anycubic — holographic printing represents a complementary technology rather than a replacement. FDM and SLA printers excel at producing large, functional parts from a wide range of materials. Holographic printing is ideal for tiny, complex structures that need to be produced extremely quickly.

The Science Behind the Mask

The nanopatterned mask is the heart of the system. Unlike a simple shadow mask used in photolithography (the 2D chip-making process that inspired this work), the holographic mask uses diffraction rather than blocking to shape the light field.

The mask is designed using inverse computational methods: the researchers start with the desired 3D shape and work backward to calculate what mask pattern will produce the correct light distribution inside the resin. This computational design step is crucial — without it, the laser light would scatter unpredictably through the resin, producing a blurred mess rather than a sharp structure.

The resin itself is also custom-formulated. It consists of stringy polymers that crosslink and harden when exposed to laser light. The researchers carefully tuned the resin’s chemistry so that the crosslinking reaction is slow enough relative to the light exposure to allow precise control over which regions solidify.

Future Directions

The research team is now working on several fronts to advance the technology:

• Larger prints: Scaling up the optical system to produce centimeter-scale and eventually larger objects
• Multi-material printing: Developing resins that can produce objects with varying material properties in different regions
• Biocompatible materials: Creating resins suitable for medical applications like tissue scaffolds and drug delivery devices
• Production speed: Optimizing the computational design pipeline to make mask design faster and more accessible

The collaboration between the University of Utah (optics and computational design) and the University of Texas at Austin (chemistry and mechanical engineering) has been key to the project’s success. The interdisciplinary nature of the work — combining photonics, polymer chemistry, and computational engineering — reflects the increasingly complex skill set needed to push 3D printing technology forward.

How TT3DPrint Can Help

While holographic 3D printing is still in the research phase, TT3DPrint is already at the forefront of production-grade 3D printing. Our fleet of 220+ Bambu Lab printers delivers high-quality FDM prints at scale — from custom figurines and educational models to functional prototypes and creative gifts.

Whether you need a one-off prototype or a batch of thousands, we combine the latest consumer 3D printing technology with professional-grade quality control and worldwide shipping. Contact us today to discuss your next project.

Conclusion

Holographic 3D printing represents a genuine paradigm shift in additive manufacturing. By eliminating the layer-by-layer constraint that has defined 3D printing for decades, researchers at the University of Utah and UT Austin have opened the door to a future where complex 3D objects can be produced in seconds rather than hours.

While the technology is still in its early stages, the potential applications — from rapid microfluidic prototyping to biomedical implant fabrication — are vast. As the 3D printing industry continues to evolve, innovations like this remind us that we’re still in the early chapters of the additive manufacturing revolution.

The full paper, “Single-exposure holographic 3D printing via inverse-designed phase masks,” is available in Science Advances.