TY  - JOUR
A1  - Bäckemo, Johan Dag Valentin
A1  - Liu, Yue
A1  - Lendlein, Andreas
T1  - Bio-inspired and computer-supported design of modulated shape changes in polymer materials
JF  - MRS communications / a publication of the Materials Research Society
N2  - 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.
KW  - Additive manufacturing
KW  - Biomimetic
KW  - Shape memory
KW  - Modelling
KW  - Polymer
Y1  - 2021
U6  - https://doi.org/10.1557/s43579-021-00056-6
SN  - 2159-6867
VL  - 11
IS  - 4
SP  - 462
EP  - 469
PB  - Springer
CY  - Berlin
ER  -