Multi-beam two-photon polymerization for fast large area 3D periodic structure fabrication for bioapplications.

ABSTRACT: Two-photon polymerization (TPP) is capable of fabricating 3D structures with dimensions from sub-µm to a few hundred µm. As a direct laser writing (DLW) process, fabrication time of 3D TPP structures scale with the third order, limiting its use in large volume fabrication. Here, we report on a scalable fabrication method that cuts fabrication time to a fraction. A parallelized 9 multi-beamlets DLW process, created by a fixed diffraction optical element (DOE) and subsequent stitching are used to fabricate large periodic high aspect ratio 3D microstructured arrays with sub-micron features spanning several hundred of µm². The wall structure in the array is designed with a minimum of traced lines and is created by a low numerical aperture (NA) microscope objective, leading to self-s

SUBMITTER: Maibohm C 

PROVIDER: S-EPMC7250934 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature