Core Insights - A new 3D micro-nano manufacturing technology has been developed by researchers from the Max Planck Institute for Intelligent Systems in Germany and the National University of Singapore, utilizing light fluid effects to enable the use of various materials beyond traditional polymers, paving the way for the creation of micro-robots [1][2] Group 1: Technology Overview - The new technology allows for the production of structures finer than human hair, with applications in medical, robotics, and microelectronics fields [1] - Traditional two-photon polymerization (2PP) methods are limited to processing polymers, which restricts the development of functional devices [1] - The core innovation involves using femtosecond lasers to precisely control light fluid effects, guiding nano or micro-sized particles for 3D self-assembly [1] Group 2: Manufacturing Process - The micro-molds function like miniature "cake molds" with openings, allowing particles to flow through and accumulate into desired shapes [2] - Molds can be designed in various complex geometries, such as cubes, spheres, or croissant-like structures, providing high design freedom [2] - After assembly, post-processing removes the polymer mold, resulting in independent microstructures made entirely of the target material [2] Group 3: Applications and Potential - The team has successfully created various functional micro-devices, including a micro-filter valve for particle separation and multifunctional micro-robots that can be driven by light or magnetic fields [2] - All structures exhibit excellent mechanical stability, relying on strong van der Waals forces for self-support without chemical bonding [2] - This "light flow assembly" technology overcomes traditional 3D printing material limitations and opens doors to multifunctional microsystems, with potential applications in smart drug delivery, in-body micro-surgical robots, and high-density microsensors [2]