【#Tech24H】Scientists at Nanyang Technological University in Singapore have developed a robot as small as a seed, measuring just 4.4 mm in length. At the core of the robot is a magnetic module that can be magnetized, demagnetized, and remagnetized in different directions. Each magnetic orientation triggers a specific function, allowing the robot to navigate flexibly over soft, uneven surfaces and wirelessly perform five surgical functions: moving and cutting tissue, delivering drugs, grasping and storing tissue samples, and generating heat remotely. Switching between functions takes less than one second. This breakthrough paves the way for more precise surgical and medical robots. [ By Zhang Liyan | Tang Ruohan ]