Tsinghua Team 3D-Prints Optical Chips in 0.6 Seconds, Boosting AI and Crypto Hardware

A research team at Tsinghua University just figured out how to 3D-print complex optical structures in 0.6 seconds. The previous benchmark? Hours. That’s not an incremental improvement. That’s the difference between developing film at a photo lab and snapping an iPhone picture.

The technology, called DISH (digital incoherent synthesis of holographic light fields), was published in Nature and led by academician Dai Qionghai. It achieves printing rates of up to 333 cubic millimeters per second with a minimum feature size of 12 micrometers, which is roughly one-eighth the width of a human hair.

Traditional 3D printing at this scale works like an old dot-matrix printer. It builds structures point by point, layer by layer, painstakingly crawling across surfaces. DISH throws that entire paradigm out the window.

In English: instead of drawing a sculpture one dot at a time, DISH projects the entire 3D shape simultaneously using computational optics and holographic light-field manipulation. Think of it like a projector that doesn’t just throw an image on a screen but actually solidifies a three-dimensional object in one flash.

The hardware requirements are almost laughably simple. The system needs just a single optical flat surface and a stationary container. No complex multi-axis scanning rigs, no elaborate layer-by-layer calibration. This simplicity is precisely what makes it viable for mass production rather than just lab demonstrations.

The direct applications the researchers are targeting include photonic chips and mobile camera modules. Both are components where microscale precision and manufacturing speed have historically been at odds with each other. DISH appears to resolve that tension.

DISH directly addresses the photonic manufacturing problem. If photonic chips can be fabricated thousands of times faster than before, the timeline for commercially viable optical computing hardware compresses dramatically. That matters for crypto mining operations exploring post-silicon architectures, for AI-focused blockchain projects that need cheaper inference, and for the broader compute economy that underpins decentralized networks.

China’s strategic motivation here isn’t subtle. Amid escalating export controls on advanced semiconductor equipment, particularly from the US and its allies, Beijing has been pouring resources into alternative computing paradigms. Photonics represents a path that sidesteps the chokepoints in traditional chip manufacturing, where firms like ASML and TSMC hold outsized power.

The DISH technology, developed over a five-year period, fits squarely into China’s broader photonics push. By enabling mass production of micro-optical components domestically, China could reduce its dependence on the global semiconductor supply chain that has become increasingly weaponized in geopolitical disputes.

Look, a Nature publication is not the same as a factory churning out chips. But the simplicity of DISH’s hardware requirements, just an optical flat surface and a container, suggests the path to industrialization could be shorter than usual.