Functionally intertwined geometries such as chain mail make it possible to create flexible structures out of hard material. Standard 3D printing does not enables printing of movable structures because supports are required to maintain the shape. Meanwhile, structures can be fabricated inside a gel or liquid monomer by using the multiphoton polymerization technique which makes support‑free 3D printing possible. In this way, movable assembly-free structures can be created. This property opens up the possibility of producing free micromechanical structures that could be used in various fields such as micromechanics and microrobotics.
Femtosecond microfabrication in micromechanics applications uses techniques like multiphoton polymerization and selective laser etching to produce flexible and high-precision 3D structures. These structures, made of materials like polymers and ceramics, can be used in various fields like micromechanics and microrobotics and are ideal for applications that require movable assembly-free components.
Multiphoton-polymerization (MPP) is a technology that enables the production of arbitrary shape polymeric structures within submicrometric resolution. First, a photoresist sample is prepared by drop-casting polymer material mixed with a photoinitiator on the glass slide and then pre-baking.
A feasibility study is composed of several steps, including researching methods for fabricating micro-structures, fabricating a micro-structure prototype, measuring and aligning the prototype with technical requirements, and finally preparing a study report.