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
Skin in the game (phrase) heard in common use. Skin in the game (phrase) To have "skin in the game" is to have incurred risk (monetary or otherwise) by being involved in achieving a goal. In the phrase, "skin" is a synecdoche for the person involved, and "game" is the metaphor for actions on the field of play under discussion. The aphorism is particularly common in business, finance, and gambling, and is also used in politics. The origin of the phrase is unknown. It has commonly been attributed to Warren Buffett, referring to his own investment in his initial fund. However, William Safire refutes Buffett