Judy Martinez Nanorobots have been created that can move and move molecular loads
Researchers have trained DNA robots to move nanoweights.
The sphere of nanotechnology is still at the stage of its formation, however, more and more discoveries and research in this area have appeared recently. One such study, conducted by a team of scientists from the California Institute of Technology, demonstrated the ability of robots made from a single short strand of DNA to explore a molecular surface, lift specific molecules and transport them to a designated location.
Previous work by various researchers has successfully demonstrated the creation of such DNA robots using the DNA origami method, but for the first time it was shown that they are capable of collecting and transferring certain molecules.
The robot consisted of a body, a “leg” with two “feet” and a “hand” with a “hand”. To test the robots, the researchers developed a molecular surface measuring 58×58 nanometers. Pegs made of DNA strands were placed over the entire surface, complementing the “legs” of the robot. This allowed the robot to move in any direction on the board, jumping from one nanopart to another.
Six fluorescent molecules (three red and three yellow) were randomly placed on the surface, which the robot had to assemble into two color groups at two specific points on the board. It took 24 hours and one DNA robot to explore the entire surface. When the robot collided with the right molecules, it picked them up with its “hand” and continued to move until it got to the right place. At the same time, the robot consumed very little chemical energy. The developers say the process can be accelerated by increasing the number of robots on the surface.
They also note that this study is just a proof of concept for such technologies, and these DNA robots are not yet designed for use in specific areas, which, however, may be very numerous in the future.
Research published in the journal Science…
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