The technique is functionally similar to how they make plywood. Laser cutters burn away a sheets of plastic, metal and paper as needed, cutting out different shapes. Then those layers are stacked and laminated together, so that they are a single, unified whole. The finished product is a hexagonal chunk of plastic an metal and plastic, with an assembly scaffold built-in to assemble the robot.
The Harvard Monolithic Bee pops up within an assembly scaffold. Photos courtesy of Pratheev Sreetharan.
The technique is similar to what has been used in printed circuit boards for years, though circuit boards aren’t usually folded into shape. Circuit boards have long relied on sandwiching together layers of plastic and metal to create complex, yet thin, circuits.
Said doctoral candidate Pratheev Sreetharan, the co-developer of the building technique, “This takes what is a craft, an artisanal process, and transforms it for automated mass production.” In other words, it takes what once took painstaking hours to assemble by hand and makes it build itself in moments. A major breakthrough.
The researchers hope to use the small, Aeriel bots to research robotic swarm behaviours. Right now the assembly of the individual bots takes forever, so this could dramatically cut down on the time needed and costs.
ScienceDaily Photo by : Pratheev Sreetharan