Bio-inspired and computer-supported design of modulated shape changes in polymer materials
- The Venus flytrap is a fascinating plant with a finely tuned mechanical bi-stable system, which can switch between mono- and bi-stability. Here, we combine geometrical design of compliant mechanics and the function of shape-memory polymers to enable switching between bi- and mono-stable states. Digital design and modelling using the Chained Beam Constraint Model forecasted two geometries, which were experimentally realized as structured films of cross-linked poly[ethylene-co-(vinyl acetate)] supported by digital manufacturing. Mechanical evaluation confirmed our predicted features. We demonstrated that a shape-memory effect could switch between bi- and mono-stability for the same construct, effectively imitating the Venus flytrap.
| Author details: | Johan Dag Valentin BäckemoORCiDGND, Yue LiuORCiDGND, Andreas LendleinORCiDGND |
|---|---|
| DOI: | https://doi.org/10.1557/s43579-021-00056-6 |
| ISSN: | 2159-6867 |
| Title of parent work (English): | MRS communications / a publication of the Materials Research Society |
| Publisher: | Springer |
| Place of publishing: | Berlin |
| Publication type: | Article |
| Language: | English |
| Date of first publication: | 2021/07/20 |
| Publication year: | 2021 |
| Release date: | 2023/05/15 |
| Tag: | Additive manufacturing; Biomimetic; Modelling; Polymer; Shape memory |
| Volume: | 11 |
| Issue: | 4 |
| Number of pages: | 8 |
| First page: | 462 |
| Last Page: | 469 |
| Funding institution: | Helmholtz Association of German Research CentersHelmholtz Association [VH-GS-503]; European Union's Horizon 2020 research and innovation program [824074] |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Chemie |
| DDC classification: | 5 Naturwissenschaften und Mathematik / 54 Chemie / 540 Chemie und zugeordnete Wissenschaften |
| Peer review: | Referiert |
| Publishing method: | Open Access / Hybrid Open-Access |
