Instead of digging through the debris by hand or having dogs sniff for signs of life, they bring out a small, air-tight cylinder..This is just one possible application of a new type of robot created by mechanical engineers at Stanford University, detailed in a June 19 Science Robotics paper.”Some iterations of these robots included a control system that differentially inflated the body, which made the robot turn right or left. It’s a tube of soft material folded inside itself, like an inside-out sock, that grows in one direction when the material at the front of the tube everts, as the tube becomes right-side-out. “It’s very, very different from the way that animals or people get around the world. They’ve already created a 1.A primary advantage of soft robots is that they can be safer than hard, rigid robots not only because they are soft but also because they are often lightweight. It grew through an obstacle course, where it traveled over flypaper, sticky glue and nails and up an ice wall to deliver a sensor, which could potentially sense carbon dioxide produced by trapped survivors. In the prototypes, the material was a thin, cheap plastic and the robot body everted when the scientists pumped pressurized air into the stationary end.

The researchers developed a software system that based direction decisions on images coming in from a camera at the tip of the robot. Inspired by natural organisms that cover distance by growing – such as vines, fungi and nerve cells – the researchers have China bumper molds Manufacturers made a proof of concept of their soft, growing robot and have run it through some challenging tests. They place the device at the entrance of the debris and flip a switch. A lot of work went into designing algorithms that both ran fast and produced results that were accurate enough for controlling the soft robot,” Greer said. “Also, using a camera to guide the robot to a target is a difficult problem because the camera imagery needs to be processed at the rate it is produced. In other versions, fluid could replace the pressurized air. Future versions may also grow using liquid, which could help deliver water to people trapped in tight spaces or to put out fires in closed rooms. This, however, also poses some challenges.In other demonstrations, the robot lifted a 100-kilogram crate, grew under a door gap that was 10 percent of its diameter and spiraled on itself to form a free-standing structure that then sent out a radio signal. Another benefit, in the case of this robot, is that it is flexible and can follow complicated paths. It could prove useful in search and rescue operations and medical applications. It successfully completed this course even though it was punctured by the nails because the area that was punctured didn’t continue to move and, as a result, self-sealed by staying on top of the nail.

A growing robotThe basic idea behind this robot is straightforward.“The body lengthens as the material extends from the end but the rest of the body doesn’t move,” explained Elliot Hawkes, a visiting assistant professor from the University of California, Santa Barbara and lead author of the paper. This robot could serve a wide range of purposes, particularly in the realms of search and rescue and medical devices, the researchers said. “If you can put a robot in these environments and it’s unaffected by the obstacles while it’s moving, you don’t need to worry about it getting damaged or stuck as it explores.8 mm version and believe small growing robots could advance medical procedures. “The body can be stuck to the environment or jammed between rocks, but that doesn’t stop the robot because the tip can continue to progress as new material is added to the end.”The group tested the benefits of this method for getting the robot from one place to another in several ways. They are also exploring new, tougher materials, like rip-stop nylon and Kevlar.”To investigate what their robot can do, the group created prototypes that move through various obstacles, travel toward a designated goal, and grow into a free-standing structure. In the future, the researchers would like to create a version that would be manufactured automatically.Stanford researchers develop a new type of soft, growing robot. This is especially useful in situations where a robot could be moving in close quarters with a person.Joey Greer, a graduate student in the Okamura lab and co-author of the paper, said that controlling a robot requires a precise model of its motion, which is difficult to establish for a soft robot.Difficult environments“The applications we’re focusing on are those where the robot moves through a difficult environment, where the features are unpredictable and there are unknown spaces,” said Laura Blumenschein, a graduate student in the Okamura lab and co-author of the paper.

Going big – and smallAs it exists now, the scientists built the prototype by hand and it is powered through pneumatic air pressure. Further, it pulled a cable through its body while growing above the dropped ceiling, offering a new method for routing wires in tight spaces. A camera at the tip of the tendril gives rescuers a view of the otherwise unreachable places beneath the rubble. From one end of the cylinder, a tendril extends into the mass of stones and dirt, like a fast-climbing vine. Rigid robots, by comparison, are much easier to model and control, but are unusable in many situations where flexibility or safety is necessary.What makes this robot design extremely useful is that the design results in movement of the tip without movement of the body.