Sahin, Ekin Sila ; Cheng, Tiffany ; Wood, Dylan ; Tahouni, Yasaman ; Poppinga, Simon ; Thielen, Marc ; Speck, Thomas ; Menges, Achim
Hrsg.: MDPI (2023)
Cross-sectional 4D-printing: upscaling self-shaping structures with differentiated material properties inspired by the large-flowered butterwort (Pinguicula grandiflora).
In: Biomimetics, 8 (2)
doi: 10.3390/biomimetics8020233
Artikel, Bibliographie

Kurzbeschreibung (Abstract)

Extrusion-based 4D-printing, which is an emerging field within additive manufacturing, has enabled the technical transfer of bioinspired self-shaping mechanisms by emulating the functional morphology of motile plant structures (e.g., leaves, petals, capsules). However, restricted by the layer-by-layer extrusion process, much of the resulting works are simplified abstractions of the pinecone scale’s bilayer structure. This paper presents a new method of 4D-printing by rotating the printed axis of the bilayers, which enables the design and fabrication of self-shaping monomaterial systems in cross sections. This research introduces a computational workflow for programming, simulating, and 4D-printing differentiated cross sections with multilayered mechanical properties. Taking inspiration from the large-flowered butterwort (Pinguicula grandiflora), which shows the formation of depressions on its trap leaves upon contact with prey, we investigate the depression formation of bioinspired 4D-printed test structures by varying each depth layer. Cross-sectional 4D-printing expands the design space of bioinspired bilayer mechanisms beyond the XY plane, allows more control in tuning their self-shaping properties, and paves the way toward large-scale 4D-printed structures with high-resolution programmability.

Frage zum Eintrag

Redaktionelle Details anzeigen