DNA Nanorobots Pick Up And Sort Molecules

An autonomous molecular machine, made of a single strand of DNA, that can autonomously “walk” around a surface, pick up certain molecules and drop them off in designated locations has been developed by scientists at California Institute of Technology. Lulu Qian, assistant professor of bioengineering, explains: The researchers constructed three basic building blocks that could be used to assemble a DNA robot: a “leg” with two “feet” for walking, an “arm” and “hand” for picking up cargo, and a segment that can recognize a specific drop-off point and signal to the hand to release its cargo. [Read More]

Nanoscale Transducer Engine Is Powered By Light

A new nanoscale transducer, created by researchers at the University of Cambridge, is the world’s tiniest engine at just a few billionths of a metre in size. The engine, which uses light to power itself, could be the basis of future nano-machines that can navigate in water, sense the environment around them, or even enter living cells to fight disease. The prototype device is comprised of tiny charged particles of gold, held together with temperature-responsive polymers in the form of a gel. [Read More]