MEMS Array Chip Can Project Video the Size of a Grain of Sand

Micro chip beams a tiny movie; commenters split between “ant theater” jokes and AR hype

TLDR: Scientists built a grain-of-sand–sized chip that projects tiny videos and even the Mona Lisa, hinting at future AR displays and quantum control. Commenters split between cracking “ant theater” jokes and arguing it could power the next wave of glasses—cute gag now, serious tech later.

The internet just met a movie projector the size of a speck—and the comments went wild. A team from MITRE, MIT, University of Colorado Boulder, and Sandia National Laboratories built a one-millimeter photonic chip that can beam an image of the Mona Lisa onto an area smaller than two human egg cells. It can flicker 68.6 million light spots every second—so yes, it’s basically a microscopic cinema. Cue the crowd: one user cheered, “Now I can show videos to my fruit flies!” while another delivered the instant meme, “What is this, a movie theater for ants?”

Amid the giggles, a mini headline war broke out when one commenter nitpicked the wording—then immediately admitted the title was actually correct. The drama didn’t stop there. Skeptics wondered how physics even allows a projector this small to exist, while others tried to keep a straight face long enough to call it a potential game-changer for AR glasses. “This might be relevant for Augmented Reality headgear,” one practical voice chimed in, throwing shade at the ant-cinema crowd.

So what is this thing? Think tiny springboards for light: micro “ski-jumps” that wiggle to paint pictures, synced so well they even played a clip from A Charlie Brown Christmas. Researchers from QuEra Computing say they’ve hit the limit of how small the light spots can get. Translation: today it’s a party trick for fruit flies; tomorrow it could be your contact lens TV—or a key piece in controlling quantum computers. The comments are torn, but they’re definitely entertained.

Key Points

  • A MITRE-led team built a one-square-millimeter photonic MEMS chip that projects microscopic images and videos.
  • The device scans 68.6 million scannable pixels per second, exceeding prior MEMS micromirror arrays by over 50×.
  • Beam steering is achieved with piezoelectric aluminum nitride-actuated micro-cantilevers and integrated waveguides.
  • Fabrication exploits multilayer stress to curl cantilevers ~90° out of plane, with SiO2 bars stabilizing curvature.
  • The chip produced ~125-µm images (e.g., the Mona Lisa) and video clips; potential uses include AR and biomedical imaging.

Hottest takes

Now I can show videos to my fruit flies! — darfo
What is this, a movie theater for ants? — dmitrygr
This might be relevant for Augmented Reality headgear. — CoolThings
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