PhysicsLiquid robot can split into tiny droplets and reform into a blob A robot made from magnetic fluid can be made smaller, thinner, or directed to break up with special magnets, which could be useful for delivering drugs into the body ¿ìè¶ÌÊÓÆµ
PhysicsQuantum magnet is billions of times colder than interstellar space A magnet made out of ytterbium atoms is only a billionth of a degree warmer than absolute zero. Understanding how it works could help physicists build high-temperature superconductors ¿ìè¶ÌÊÓÆµ