MIT Engineers Create Ultra-Small Light-Computing Devices Using New Shrinking Method

What Happened

Engineers at MIT have developed a revolutionary manufacturing technique called “implosion carving” that can shrink specially designed materials to create devices capable of performing computations using light instead of electricity. The method allows researchers to create features smaller than 100 nanometers—a size necessary to manipulate visible light for optical computing applications. Published in Nature Photonics on May 12, 2026, the breakthrough could pave the way for ultra-fast, energy-efficient optical processors that outperform traditional semiconductor chips.

Key Details

The implosion carving process works by creating tiny voids in a hydrogel material using laser light, then shrinking the entire structure to approximately 1/2,000th of its original volume. Key specifications include:

• Starting resolution: 800 nanometers, shrunk to less than 100 nanometers
• Target feature size needed to control visible light (wavelengths 380-750 nanometers)
• Demonstrated capability: simple digit-classification computing task
• Lead researchers: Quansan Yang (University of Washington) and Gaojie Yang, with senior authors Peter So and Edward Boyden from MIT
• Publication: Nature Photonics, May 2026

The technique extends MIT’s 2018 “implosion fabrication” concept by adding precision laser carving before the shrinking process.

Why This Matters

Current computer processors face fundamental limits in speed and energy efficiency because they rely on electrical signals moving through semiconductor materials. Optical computing uses light particles (photons) instead of electrons, potentially enabling much faster data processing with significantly lower energy consumption. However, building practical optical computers has been hampered by the difficulty of creating sufficiently small structures to control visible light.

Previous manufacturing methods either couldn’t achieve the necessary 100-nanometer resolution for 3D structures or were limited to flat, two-dimensional designs. The MIT breakthrough solves this manufacturing bottleneck, potentially accelerating development of optical processors for applications requiring high-speed image processing, artificial intelligence computations, and real-time data analysis.

Background and Context

Photonic devices represent a frontier in computing technology, promising to overcome the physical limitations of traditional silicon chips. As electronic processors approach the limits of Moore’s Law—the observation that computing power doubles roughly every two years—researchers are exploring alternative approaches. Light-based computing offers several advantages: photons don’t interfere with each other like electrons do, enabling parallel processing; optical signals can travel at the speed of light; and photonic systems generate less heat than electronic circuits.

The challenge has been manufacturing. Two-photon lithography can create 3D nanoscale features but not small enough for visible light control. Electron-beam lithography achieves the required resolution but only works in two dimensions. MIT’s implosion carving bridges this gap by combining precise laser patterning with controlled material shrinkage, achieving both the 3D capability and nanoscale precision needed for practical optical computing devices.

What Comes Next

The research team plans to develop more complex optical computing devices beyond their initial digit-classification demonstration. Future applications may include high-speed medical imaging systems, real-time diagnostic devices, and portable optical processors for point-of-care testing equipment. The technique could also enable new types of biosensors and optical diagnostic tools small enough for home health monitoring.

Researchers will need to scale up production methods and integrate these optical components with existing electronic systems. The next phase likely involves partnerships with technology companies to move from laboratory prototypes to commercial optical computing devices. Medical device applications may emerge first, given the healthcare industry’s need for rapid, accurate diagnostic tools that could benefit from optical processing speed and precision.

Source

This report is based on reporting from MIT News.

This article is for informational purposes only. Consult a licensed healthcare provider before purchasing or using any medical device.