3D micro printing, also referred to as micro-scale additive manufacturing, is a cutting-edge technology that enables the creation of extremely small and intricate structures with high precision. Unlike traditional 3D printing that operates on a macro scale, 3D micro printing focuses on fabricating objects at the micrometer and even nanometer scale. This technology leverages advanced techniques such as two-photon polymerization and focused ion beam lithography to build complex microstructures layer by layer.