Microscale machines are tiny devices that operate at a scale of micrometers, which is one-millionth of a meter. These machines can perform various functions, such as moving, sensing, or manipulating materials. They are often made using advanced techniques like microfabrication and are used in fields like medicine, electronics, and robotics. One common application of microscale machines is in medical devices, where they can deliver drugs precisely or assist in surgeries. Another example is in microelectromechanical systems (MEMS), which combine mechanical and electrical components to create sensors and actuators for smartphones and other gadgets.