Researchers build `flying` micro-robot
Baku, May 25 (AZERTAC). A flying micro-robot has been developed by researchers at the University of Waterloo in Ontario.
A research team, led by Professor Mir Behrad Khamesee, manipulates magnetic fields to levitate and move around three axes a robot weighing about three-hundredths of an ounce.
According to a paper shared with ZDNet UK--"MechMN: Design and Implementation of a Micromanipulation System using a Magnetically Levitated MEMS Robot"--this is accomplished with an array of electromagnets that creates a three-dimensional parabolic magnetic field.
The robot is magnetized itself and sits on top of the parabola, supported by the interaction between its own magnetic field and that created by the electromagnets. Altering the flow of current in the electromagnet distorts the field and moves the robot, Khamesee said via e-mail Thursday.
"We develop a focal point of a magnetic field in space, which the micro-robot hangs on," Khamesee said. "By changing the location of the focal point (through current control in several coils), the micro-robot is consequently moved."
The micro-robot has pincers that can be opened by heating them with a laser. When the laser is turned off, the pincers cool and close. Lasers are also used to detect the position of the robot, Khamesee said. "There are three sets of laser sensors for detecting the position of the microrobot in three-dimensional space. The robot is an obstacle for the laser beam in space, and its position can be read."
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