Liquid the distances between the molecules become smaller. When the liquid reaches its freezing point the molecules will usually lock into a very specific order, called crystallizing, and the bonds between them become more rigid, changing the liquid into its solid state (unless supercooling occurs). Only two elements are liquid at standard conditions for temperature and pressure: mercury and bromine. Four more elements have melting points slightly above room temperature: francium, caesium, gallium and rubidium. Metal alloys that are liquid at room temperature include NaK, a sodium-potassium metal alloy, galinstan, a fusible alloy liquid, and some amalgams (alloys involving mercury). Pure
Liquid metal devices, medical devices, interconnected devices and so on. Typical uses of liquid metals include thermostats, switches, barometers, heat transfer systems, and thermal cooling and heating designs. Uniquely, they can be used to conduct heat and/or electricity between non-metallic and metallic surfaces. Liquid metal is used extensively by overclockers and computer enthusiasts to replace the original thermal interface on CPU and/or GPU dies to improve cooling efficiency and performance. Also, liquid metal can be used for wearable devices. The Internet of Things (IoT) can improve our lives. Emerging IoT applications require reliable and effective wireless connectivity. Therefore, it is necessary to