Problem: To make sure they target the right parts of the cornea during vision-correcting Lasik surgery, doctors rely on a scanner that responds to eye movements and redirects laser pulses. Today’s scanners cost thousands of dollars and still offer less than ideal precision.
Solution: At the University of California, Berkeley, researchers in the Microfabrication Laboratory used inexpensive techniques to build a microscale scanner that moves up to 30,000 times per second, up from the 4,000 times per second of conventional technology. Graduate students Hyuck Choo and David Garmire invented a way to carve one piece of silicon into two interlocked comblike structures. Applying a voltage to one comb makes the other move up or down. A mirror attached to the combs redirects a laser beam. While “comb drives” are already used in some microelectromechanical systems (MEMS), the combs have had to be built on separate silicon wafers and wedged together manually. Because the new device is easy to manufacture, “this is not just an incremental step but a major development,” says Roger T. Howe, the Stanford University electrical engineer who invented the comb drive in the 1980s. Choo says the technology could be cheaply incorporated into surgical scanners and other devices.
These weird virtual creatures evolve their bodies to solve problems
They show how intelligence and body plans are closely linked—and could unlock AI for robots.
A horrifying new AI app swaps women into porn videos with a click
Deepfake researchers have long feared the day this would arrive.
Chinese hackers disguised themselves as Iran to target Israel
But they left a few clues that gave them away.
DeepMind says it will release the structure of every protein known to science
The company has already used its protein-folding AI, AlphaFold, to generate structures for the human proteome, as well as yeast, fruit flies, mice, and more.
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