Liquid metal imbalance of the surface tension induces a pressure difference between the rear and the head, which produces a thrust to drive the droplet toward the head; at the same time, the hydrogen produced in the electrochemical reaction process also further raises the thrust. The discovery of this phenomenon laid the technical foundation for the development of intelligent motors, vascular robots, fluid pumping systems, flexible actuators and even more complex liquid metal robots. Liquid metal Liquid metal consists of alloys with very low melting points which form a eutectic that is liquid at room temperature. The standard metal used to be
The Painted Skin The Painted Skin "The Painted Skin" () is a short story by the Chinese writer Pu Songling collected in "Strange Tales from a Chinese Studio" in 1740. Literary critics have recognised it as one of the best and best-known entries in "Strange Tales"; in particular, its textual detail and in-depth characterisation are lauded. "The Painted Skin" has also received numerous adaptations in popular media, especially in film. The story's original title has become a common phrase in Chinese vocabulary, "a synonym for duplicity that wears an outwardly human face but is inwardly demonic". Set in Shandong, the story revolves around