Scientists have created liquid-based robots using shape-shifting metal, able to switch between solid and liquid states through magnetoactive phase transitional matter controlled by magnetic fields. These robots have applications in biomedicine and engineering, combining the speed of liquid with the strength of solid materials. Experiments have shown potential in medical applications like drug delivery and foreign object removal. Additionally, researchers are exploring new materials like magnetic slimes and lightweight liquid metals for soft robotics and wearable technology, promising advancements in various industries.