actuation

The key detail in the weapon debris was the tail actuation system, which controls the fins that guide the GBU-39 to a target, according to Trevor Ball, a former U.S.

"In other words, we watched the electromechanical actuation as it was happening, so we could see the mechanism for the large shape changes," Martin said.

"To ensure the safe use of these devices inside the body, we have managed to reduce the voltage required for actuation to very low values," said Dr Chaoqun Dong, the paper's first author.

"But what's really interesting here, is that we can reprogram that behavior, so that the cilia can be repurposed to have a completely different actuation."

The other, an actuation component, turns those speech signals into the desired voice expression.