Microsoft alum fights malaria by zapping mosquitoes with lasers

Summary:At the annual TED conference, former Microsoft CTO Nathan Myhrvold demonstrated how inexpensive lasers could be used to fight malaria by zapping mosquitoes mid-flight.

At the annual TED conference in Long Beach, Calif., a Microsoft alumnus demonstrated how inexpensive lasers could be used to fight malaria by zapping mosquitoes mid-flight.

Former Microsoft CTO Nathan Myhrvold says his company, Intellectual Ventures, can assemble electronic parts from readily available devices -- printers, digital cameras, projectors -- to make ground-to-air lasers that can take out mosquitoes.

That's a much cooler solution than just using netting.

Myhrvold demonstrated the laser at the conference by releasing hundreds of mosquitoes into a glass tank in front of an audience. The laser tracked their movements and, one by one, shot them down, their bodies piled on the bottom of the tank.

Myhrvold said the lasers can shoot between 50 and 100 mosquitoes per second, and using video playback, slowed down the demonstration for the audience to view. In the video, the mosquitoes are hit by a beam of light and disintegrate in a plume of smoke.

Myhrvold said the software detects the speed and size of the target before firing -- so, for example, it would leave a butterfly unharmed but target a locust.

(How precise is it? So much so that it can determine gender, since female mosquitoes are bigger and beat their wings at lower frequencies. Only females bite humans, so the system actually leaves male mosquitoes alone.)

Curious? Here's the 0.01-second shootdown sequence, in slow motion:

The laser is effectively a chemical-free pesticide, and could be used to protect medical clinics, homes and farms from the bugs.

At last year's TED conference, Myhrvold's former boss, Bill Gates, released mosquitoes into the audience to emphasize his point about the threat malaria poses to developing countries.

The tech, by the way, is simple enough: it combines the precision of laser printing with image-detecting digital camera CCDs plus software to make it happen. Myhrvold has expressed interest in Blu-ray technology as well, because blue lasers are more powerful than red ones.

Altogether, the device could cost as little as $50, depending on volume. For now, it's merely a proof-of-concept device.

Related on SmartPlanet:

Top Image: TED/James Duncan Davidson

This post was originally published on Smartplanet.com

Topics: Innovation

About

Andrew Nusca is a former writer-editor for ZDNet and contributor to CNET. He is also the former editor of SmartPlanet, ZDNet's sister site about innovation. He writes about business, technology and design now but used to cover finance, fashion and culture. He was an intern at Money, Men's Vogue, Popular Mechanics and the New York Daily Ne... Full Bio

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