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In article number 1907795, Vincent Hahn and co‐workers manufacture a mechanical metamaterial containing more than one hundred thousand chiral 3D unit cells and more than three hundred billion voxels by using rapid multi‐focus multi‐photon 3D laser printing. This technology uses an array of 3 × 3 laser foci and allows for sub‐micrometer voxel sizes at printing rates of about ten million voxels per...
Herein, various 3D additive manufacturing approaches are reviewed in terms of two important figures of merit: maximum voxel printing rate and minimum voxel size. Voxel sizes from several 100 µm down to the 100 nm scale are covered. Original results on multifocus two‐photon printing at around voxel printing rates of 107 voxels s−1 are presented in this context, which significantly surpass previous...
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