Researchers at the University of Utah have developed an innovative holographic 3D printing technique that creates seamless microstructures in just 20 seconds. Unlike conventional laser-based 3D printing, which builds objects layer by layer, the new method forms an entire structure in a single laser exposure, eliminating the microscopic seams that can weaken parts or cause leaks.

The breakthrough relies on a nanoscale holographic mask that reshapes laser light into a three-dimensional pattern matching the desired design. Instead of curing material one layer at a time, the system solidifies the entire structure simultaneously, producing stronger, more uniform microcomponents while dramatically reducing manufacturing time.

The research was led by Rajesh Menon, professor in the Department of Electrical & Computer Engineering at the University of Utah’s Price College of Engineering, together with researcher Dajun Lin.

Figure 1. Industrial Robot 3D Printing a Sculpture.

Holographic Printing Replaces Layer-by-Layer Fabrication

The technique is based on photolithography, a manufacturing process widely used in semiconductor fabrication. Rather than projecting light onto a flat surface, the system focuses laser energy throughout a three-dimensional volume of the photosensitive material SU-8. Figure 1 shows Industrial robot 3D printing a sculpture.

To overcome the light scattering that normally limits 3D photolithography, the researchers designed a nanopatterned holographic lens that precisely directs laser energy to the intended shape. This enables the entire microstructure to be cured in a single exposure with exceptional accuracy.As Menon explains, the holographic mask functions like a cookie cutter shaping dough, while the laser simultaneously hardens the material from within to produce a robust final structure.

Stronger Microstructures for Advanced Applications

Using the new process, the team fabricated microtubule arrays with tube diameters as small as six micrometers and aspect ratios reaching 120:1. The printed structures demonstrated excellent mechanical strength under compression and successfully transported liquids through capillary action, highlighting their potential for microfluidic devices and other precision engineering applications [1]. The researchers also showcased continuous production of multiple lattice designs in a conveyor-style manufacturing process, demonstrating the technology's potential for high-throughput fabrication.

Although the current system offers precise control over two primary dimensions while creating extended three-dimensional structures, the team is working toward full volumetric 3D printing without sacrificing speed or accuracy. Their goal is to enable rapid production of increasingly complex microscale components for future scientific, medical, and industrial applications.

Reference:

1. https://interestingengineering.com/innovation/holographic-3d-printing-leak-free-microstructures

Cite this article:

Keerthana S (2026), Fast Holographic 3D Printing Produces Leak-Free Microstructures, AnaTechMaz, pp.481.