This work aimed to further miniaturize pantographic metamaterials, transferring their exceptional characteristics to extremely small-length scales. To achieve this, pantographic blocks — 3D metamaterials constructed by extending 2D pantographic unit cells into the third dimension — with dimensions on the order of a few microns were fabricated using two-photon polymerization (2PP) [5].
The mechanical properties of these miniaturized structures were analyzed under relatively large deformations and cyclic loading using nanoindentation tests conducted in situ within a field emission scanning electron microscope. Subsequently, the structural failure of the compressed specimens was examined in detail using helium ion microscopy.
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