The humble cockroach: depending on where you live, they’re variously the bane of apartment dwellers, a tasty snacc, or a source of political inspiration. The cliché is that they’d be the only creatures to survive a nuclear apocalypse, and whether or not that’s true, you probably wouldn’t put them first in line for further enhancements to their already legendary ability to survive.
However, it seems that no one’s told that to the folks at Nanyang Technological University in Singapore, because a group of researchers from the university’s School of Mechanical and Aerospace Engineering recently published a paper describing the process of fitting a cockroach with a diving suit. As the paper’s abstract explains, “The suit integrates a miniaturized oxygen generation module with a flexible waterproof shell, enabling continuous oxygen supply and isolation from surrounding water.”
Or, in other words, the suit successfully allowed the insect to breathe underwater, turning it into a sort of nightmarish amphibious cyborg. If this sounds like a terrible idea at face value, console yourself with the knowledge that these cyber-roaches are designed to be used for benevolent purposes. As per the paper, said purposes include pipe inspections, “object transportation,” and, apparently, search-and-rescue missions. (Smash cut to 2031 and Elon Musk ranting about a “pedo roach”.)
Research into the creation of cyborg insects has been a thing for some time, both in academia and in the world of tech. On the latter point, readers may remember the RoboRoach, a $200 DIY kit for creating your own cyborg cockroach that was funded via Kickstarter in 2013. The kit is still available, and these days it seems to be marketed as a fun activity for kids—on the manufacturer’s website, it’s labelled as being for “Grade 9+” and “[Requiring] supervision.” If the idea of a bunch of 15-year-olds performing surgery on cockroaches makes you kinda queasy—supervision or not—well, you’re not alone.
Let’s get back to the Nanyang Technological University, where the experiments are presumably not being conducted by middle-schoolers. If you’ve ever wondered how a cockroach breathes, the paper explains that “like most terrestrial insects, [they] breathe through thoracic spiracles that take in oxygen directly from the air.” The “diving suit” is basically a flexible waterproof shell into which a miniature oxygen generator pumps oxygen, effectively creating a tiny breathing bubble around the insect’s air-intake thingamajigs.
This allowed the insect to breathe underwater for up to three hours, although it seems there were some initial, um, design issues to sort out: “Dorsal mounting of the oxygen generator on the cockroach created significant water-resistance during underwater locomotion… causing postural instability and rollover.” Once this issue was resolved, it seems the roaches got on just fine underwater, exhibiting “stable and smooth underwater walking without rollover.” The researchers conclude that the idea is a winner, and that it could be “potentially extended to other terrestrial cyborg insect platforms, such as [other] cockroaches, locusts and beetles.” Amphibious locusts! What could possibly go wrong?
Read the full article here
