Scientists Use Dead Spider As Gripper For Robot Arm, Label It a 'Necrobot'

New submitter know-nothing cunt shares a report from The Register: Scientists from Rice University in Texas have used a dead spider as an actuator at the end of a robot arm -- a feat they claim has initiated the field of "necrobotics." "Humans have relied on biotic materials -- non-living materials derived from living organisms -- since their early ancestors wore animal hides as clothing and used bones for tools," the authors state in an article titled Necrobotics: Biotic Materials as Ready-to-Use Actuators. The article, published by Advanced Science, also notes that evolution has perfected many designs that could be useful in robots, and that spiders have proven especially interesting. Spiders' legs "do not have antagonistic muscle pairs; instead, they have only flexor muscles that contract their legs inwards, and hemolymph (i.e., blood) pressure generated in the prosoma (the part of the body connected to the legs) extends their legs outwards." The authors had a hunch that if they could generate and control a force equivalent to blood pressure, they could make a dead spider's legs move in and out, allowing them to grip objects and release them again. So they killed a wolf spider "through exposure to freezing temperature (approximately -4C) for a period of 5-7 days" and then used a syringe to inject the spider's prosoma with glue. By leaving the syringe in place and pumping in or withdrawing glue, the researchers were able to make the spider's legs contract and grip. The article claims that's a vastly easier way to make a gripper than with conventional robotic techniques that require all sorts of tedious fabrication and design efforts. "The necrobotic gripper is capable of grasping objects with irregular geometries and up to 130 percent of its own mass," the article notes.

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