Self-sculpting sand (MIT)
Imagine that you have a big box of sand in which you bury a tiny model of a
footstool. A few seconds later, you reach into the box and pull out a full-
size footstool: The sand has assembled itself into a large-scale replica of
the model.
That may sound like a scene from a Harry Potter novel, but it’s the vision
animating a research project at the Distributed Robotics Laboratory (DRL) at
MIT’s Computer Science and Artificial Intelligence Laboratory. At the IEEE
International Conference on Robotics and Automation in May — the world’s
premier robotics conference — DRL researchers will present a paper describing
algorithms that could enable such “smart sand.” They also describe experiments
in which they tested the algorithms on somewhat larger particles — cubes about
10 millimeters to an edge, with rudimentary microprocessors inside and very
unusual magnets on four of their sides.
Unlike many other approaches to reconfigurable robots, smart sand uses a
subtractive method, akin to stone carving, rather than an additive method,
akin to snapping LEGO blocks together. A heap of smart sand would be analogous
to the rough block of stone that a sculptor begins with. The individual …
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