Femtosecond microfabrication is a new technology for the production of high-precision micromechanical components that can be used in fields such as micromechanics and microrobotics. One example is the use of multiphoton polymerization with hybrid polymers in combination with pyrolysis to create ceramic structures with high mechanical rigidity, which are suitable for the fabrication of micromechanical parts. Another example is selective laser etching (SLE) technology, which enables the fabrication of true 3D glass structures with complex architecture and low surface roughness. This technology can produce structures such as the Geneva gear or fullerene molecule-like structures with high selectivity and aspect ratio.
3D Chain-Mail Structure
Standard 3D printing does not enables printing of movable structures. These structures can be fabricated inside a gel or liquid monomer by using the multiphoton polymerization technique which makes support‑free 3D printing possible.
3D laser lithography is a suitable technology for the production of high-precision micromechanical components, an example being the single-helix three-turn 3D meso-spring for micro-mechanical applications.
The multiphoton polymerization technique with hybrid polymers in combination with pyrolysis enables the removal of the organic part of the polymer and produces ceramic structures. Structure shrinkage during pyrolysis is homogeneous and is approximately 25 %.
The Geneva gear is an arbitrary-shaped micromechanical component and is one of the most used devices for producing intermittent rotary motion.
Threads for Screw
The SLE technology permits straightforward conversion of the desired CAD design to a 3D micropart. Even mm-size structures with a few micrometers of precision can be printed in this way.
Applying for Industries
Microfabrication by multi-photon polymerization is a direct laser-write technique which allows 3D structuring of photopolymers at the micro- and nano-scale.
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.