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ROBO SPACE
A kernel of promise in popcorn-powered robots
by Staff Writers
Ithaca NY (SPX) Aug 07, 2018

A soft robotic device powered by popcorn, constructed by researchers in Cornell's Collective Embodied Intelligence Lab.

Cornell University researchers have discovered how to power simple robots with a novel substance that, when heated, can expand more than 10 times in size, change its viscosity by a factor of 10 and transition from regular to highly irregular granules with surprising force.

You can also eat it with a little butter and salt.

"Popcorn-Driven Robotic Actuators," a recent paper co-authored by Steven Ceron, mechanical engineering doctoral student, and Kirstin H. Petersen, assistant professor of electrical and computer engineering, examines how popcorn's unique qualities can power inexpensive robotic devices that grip, expand or change rigidity.

"The goal of our lab is to try to make very minimalistic robots which, when deployed in high numbers, can still accomplish great things," said Petersen, who runs Cornell's Collective Embodied Intelligence Lab.

"Simple robots are cheap and less prone to failures and wear, so we can have many operating autonomously over a long time. So we are always looking for new and innovative ideas that will permit us to have more functionalities for less, and popcorn is one of those."

The study is the first to consider powering robots with popcorn, which is inexpensive, readily available, biodegradable and of course, edible. Since kernels can expand rapidly, exerting force and motion when heated, they could potentially power miniature jumping robots. Edible devices could be ingested for medical procedures. The mix of hard, unpopped granules and lighter popped corn could replace fluids in soft robots without the need for air pumps or compressors.

"Pumps and compressors tend to be more expensive, and they add a lot of weight and expense to your robot," said Ceron, the paper's lead author. "With popcorn, in some of the demonstrations that we showed, you just need to apply voltage to get the kernels to pop, so it would take all the bulky and expensive parts out of the robots."

Since kernels can't shrink once they've popped, a popcorn-powered mechanism can generally be used only once, though multiple uses are conceivable because popped kernels can dissolve in water, Ceron said.

The paper was presented at the IEEE International Conference on Robotics and Automation. Petersen said she hopes it inspires researchers to explore the possibilities of other nontraditional materials.

"Robotics is really good at embracing new ideas, and we can be super creative about what we use to generate multifunctional properties," she said. "In the end we come up with very simple solutions to fairly complex problems. We don't always have to look for high-tech solutions. Sometimes the answer is right in front of us."


Related Links
Cornell University
All about the robots on Earth and beyond!


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ROBO SPACE
Research identifies key weakness in modern computer vision systems
Providence RI (SPX) Aug 03, 2018
Computer vision algorithms have come a long way in the past decade. They've been shown to be as good or better than people at tasks like categorizing dog or cat breeds, and they have the remarkable ability to identify specific faces out of a sea of millions. But research by Brown University scientists shows that computers fail miserably at a class of tasks that even young children have no problem with: determining whether two objects in an image are the same or different. In a paper presented last ... read more

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