Register for an account

X

Enter your name and email address below.

Your email address is used to log in and will not be shared or sold. Read our privacy policy.

X

Website access code

Enter your access code into the form field below.

If you are a Zinio, Nook, Kindle, Apple, or Google Play subscriber, you can enter your website access code to gain subscriber access. Your website access code is located in the upper right corner of the Table of Contents page of your digital edition.

Planet Earth

Running roaches resolutely ram right-angles for rapid reorientation

Seriously, Science?By Seriously ScienceFebruary 20, 2018 5:00 PM

Newsletter

Sign up for our email newsletter for the latest science news

We here at Seriously, Science?

really respect roaches. Not only do rambling roaches require receivers to run 'round roadblocks, but recently, researchers reproduced resourceful running of roaches to rapidly reorient running robots by ramming right into restrictions rather than retarding and reorienting. Never mind, just watch these videos of cockroaches running into things. It will help you relax.

[embed]https://www.youtube.com/watch?v=VwI6FBiBUVw[/embed] [embed]https://www.youtube.com/watch?v=C0ETMs08DJ4[/embed] Transition by head-on collision: mechanically mediated manoeuvres in cockroaches and small robots. "Exceptional performance is often considered to be elegant and free of 'errors' or missteps. During the most extreme escape behaviours, neural control can approach or exceed its operating limits in response time and bandwidth. Here we show that small, rapid running cockroaches with robust exoskeletons select head-on collisions with obstacles to maintain the fastest escape speeds possible to transition up a vertical wall. Instead of avoidance, animals use their passive body shape and compliance to negotiate challenging environments. Cockroaches running at over 1 m or 50 body lengths per second transition from the floor to a vertical wall within 75 ms by using their head like an automobile bumper, mechanically mediating the manoeuvre. Inspired by the animal's behaviour, we demonstrate a passive, high-speed, mechanically mediated vertical transitions with a small, palm-sized legged robot. By creating a collision model for animal and human materials, we suggest a size dependence favouring mechanical mediation below 1 kg that we term the 'Haldane limit'. Relying on the mechanical control offered by soft exoskeletons represents a paradigm shift for understanding the control of small animals and the next generation of running, climbing and flying robots where the use of the body can off-load the demand for rapid sensing and actuation." Related content: The antifungal powers of cockroach poop.What’s worse than a colonoscopy? A colonoscopy involving an earthworm.An unusual finding during screening colonoscopy: a cockroach!

    2 Free Articles Left

    Want it all? Get unlimited access when you subscribe.

    Subscribe

    Already a subscriber? Register or Log In

    Want unlimited access?

    Subscribe today and save 70%

    Subscribe

    Already a subscriber? Register or Log In