Researchers created millimeters.
According to a specific chemical thread, the twist command, the clamping close or the pop-up of the open dimension metal tool.
Smart devices described online on September 17 may one day be used to biopsy the liver, support the arteries, or deliver drugs to the target site.
Even small tools need some power.
Battery pack or wire-
But David Gracias, head of research at the Johns Hopkins University in Baltimore, says this increases the number of unnecessary.
However, nature is full of minimalism: muscle contractions, leaves turning to the sun, and the flying trap of Venus suddenly closes.