Directed Energy Weapon Downs Mosquitos

wisebabo writes "Nathan Myhrvol demonstrated at TED a laser, built from parts scrounged from eBay, capable of shooting down not one but 50 to 100 mosquitos a second. The system is 'so precise that it can specify the species, and even the gender, of the mosquito being targeted.' Currently, for the sake of efficiency, it leaves the males alone because only females are bloodsuckers. Best of all the system could cost as little as $50. Maybe that's too expensive for use in preventing malaria in Africa but I'd buy one in a second!" We ran a story about this last year. It looks like the company has added a bit more polish, and burning mosquito footage to their marketing.

Comments

Evolution

[lappy512]

When will it be until mosquitoes evolve energy shields?

Re:Evolution

[IndustrialComplex]

Most likely the evolution will be a breed of them that don't fly near people. Net win for us.

I hope so. It also made me wonder about Poison Ivy. That plant is damned lucky that it is hardy, because I can't think of a worse thing to happen (evolutionarily speaking) than to develop a defense which is exceptionally annoying to a sentient creature with access to landscaping equipment.

I'm sure it worked great as a defense for creatures whose only real option was to 'Avoid that greasy trefoil', but once you add a machete and herbicides into the mix it's amazing how fast a true advantage is turned into a significant disadvantage. I hate that plant so much that I'll cut it off at the roots if I'm just walking through the forest and happen to see it.

Odd considering that other plants (and domesticated animals ancestors) won the genetic lottery simply by having a useful feature which humanity exploited.

Re:Evolution

[ElectricTurtle]

The sarcasm between the lines here is of course that some species by being cute are somehow magically important and we should intercede at great cost and labor to do whatever we can to prevent their extinction, regardless of the accepted fact that 99% of all once extant species are now extinct. Humanity is so conceited about how it subjectively assigns meaning to niche species that it thinks that a healthy biosphere is one frozen in time where nothing changes, nothing adapts. Never mind that without mass extinctions in prehistory, there would be no animal life as we know it whatsoever.

Re:Evolution

[jeffmeden]

Nevermind the fact that the ecosystems which we *rely on to survive* involve many species, in symbiotic relationships... You can call them cuddly or ugly or whatever, but you can NOT call them meaningless. Your existential rant was beautiful up until the part where you were a completely arrogant ass.

The "great cost and labor" actually goes INTO their extinction as we destroy natural habitats in search of food, oil, gold, etc.

Ready for the "big finish"? Hint: this isn't sarcasm...

If there is another mass extinction, it will INCLUDE US.

Re:Add a techno soundtrack...

[mhajicek]

Heck, mount it on the roomba to patrol.

I want ONE!

[gurps_npc]

Note, I am one of those people who attract mosquitoes. You put me at a pond and I get bit and no one else does. I would pay $500 for a personal mosquito zapper, that works, let alone $50.

Re:You only have to track two dimensions

[AdmiralXyz]

I'd be shocked if this laser is more powerful than 100 milliwatts (and it's probably much less), since even on the mosquito it doesn't appear to cause any damage to the main body, just the delicate flesh on the wings (according to the video). I wouldn't stare into it for long periods of time, but on your skin (and on brief exposure to the retinas), you'd be fine.

Re:Safety of the device?

[IndustrialComplex]

The Future's so bright... I wear my sunglasses at night.

Sign me up for 10

[CompressedAir]

Knowing this can be done, I bet this would be pretty easy to make.

You'd take a pan and tilt servo controlled laser, and put sound sensors around the laser. Move the laser towards the loudest noise, fire when the noise is equal on the sensors. Bingo, dead mosquito. Just like a sun tracker!

Everything else is software, like knowing what frequency to listen to mosquitos on.

Does anyone know:
1. How much laser power do you need to kill a mosquito?
2. What frequency noise do you target?
3. Is it shark-mountable?

Re:Pardon my skepticism

[ae1294]

Well, why doesn't DARPA fund this then

Because it already exists and works?

Re:Nice

[ppanon]

Ah, that's a good point, but the counterpoint is that the spayed female mosquito is going to keep attracting males and may keep those males busy enough that, given the short reproductive lifetimes, they miss the chance at fertilizing the eggs of a fertile female. If you sterilize 90% of the females, that may cause the same effect as if you killed 98% of them (similar to a vaccination herd effect). So, not so good to protect you locally but better in the long run. If you have to place the devices where humans can't be because they could accidentally cause blindness, then they're not very useful for direct protection but more useful for limiting reproduction.

That said, I think somebody else put their finger on how it will fail - selection pressure will change the common beat frequency for the female anopheles mosquito. It's probably related to size, and this will therefore select for a different size of female by letting them survive. Hopefully a production version of this thing can take a firmware upgrade that changes the targeted frequency range.