A current trend observed in the Anthropocene is the search for bioinspired solutions. Since it became possible to change the quality of the boundary between living and technical systems, more and more life-like technical products have been developed in recent years. Using five plant-inspired developments of motile technical systems for architecture and soft-robotics, we show how the boundary between living and technical systems undulates, shifts, perforates, blurs, or dissolves with increasing life-likeness. We discuss what causes theses changes in the boundary and how this contributes to the overall aim to achieve higher resilience, robustness, and improved esthetics of plant-inspired products. Inspiration from living systems that make efficient and economic use of materials and energy and are fully recyclable after “service time” may additionally contribute to sustainable material use, one of the major challenges in the Anthropocene.
AllenRWardropAB (1964) The opening and shedding mechanism of the female cones ofPinus radiata. Australian Journal of Botany12(2): 125–134.
2.
AshidaJ (1934) Studies on the leaf movement ofAldrovanda vesiculosa L. Memoirs of the College of Science; Kyoto Imperial University Series B9: 141–244.
3.
AthasJCNguyenCPZarketBC, et al. (2016) Enzyme-triggered folding of hydrogels: Toward a mimic of the Venus flytrap. ACS Applied Materials & Interfaces8(29): 19066–19074.
BetzOBirkholdACaliaroM, et al. (2016) Adaptive stiffness and joint-free kinematics – Actively actuated rod-shaped structures in plants and animals and their biomimetic potential in architecture and engineering. In: KnippersJNickelKSpeckT (eds.) Biomimetic Research for Architecture and Building Construction: Biological Design and Integrative Structures. Bio-inspired Systems, vol. 9. Cham: Springer, pp.135–167.
6.
BurriJTSaikiaELaübliNF, et al. (2020) A single touch can provide sufficient mechanical stimulation to trigger Venus flytrap closure. PLoS Biology18(7): e3000740.
CorreaDPoppingaSMyloMD, et al. (2020) 4D pine scale: biomimetic 4D printed autonomous scale and flap structures capable of multi-phase movement. Philosophical Transactions of The Royal Society A378(2167): 20190445.
9.
CrutzenPJStoermerEF (2000) The “Anthropocene”. Global Change Newsletter41: 17–18.
DumaisJForterreY (2012) Vegetable dynamicks: The role of water in plant movements. Annual Review of Fluid Mechanics44(453): 453–478.
12.
ElbaumR (2018) Structural principles in the design of hygroscopically moving plant cells. In: GeitmannAGrilJ (eds.) Plant Biomechanics. Cham: Springer, pp.235–246.
13.
ElbaumRAbrahamY (2014) Microstructures of hygroscopic movement devices in plant seed dispersal. Plant Science223: 124–133.
14.
ErbRMSanderJSGrischR, et al. (2013) Self-shaping composites with programmable bioinspired microstructures. Nature Communications4: 1712.
15.
EsserFJAuthPSpeckT (2020) Artificial Venus flytraps: A research review and outlook on their importance for novel bioinspired materials systems. Frontiers of Robotics and AI7: 75.
16.
EsserFScheragFDPoppingaS, et al. (2019) Adaptive biomimetic actuator systems reacting to various stimuli by and combining two biological snap-trap mechanics. In: Martinez-HernandezUVouloutsiVMuraA, et al. (eds.) Biomimetic and Biohybrid Systems. 8th International Conference. Cham: Springer, pp.114–121.
17.
FagerbergWRHoweDG (1996) A quantitative study of tissue dynamics in Venus’s flytrap Dionaea muscipula (Droseraceae). II. Trap reopening. American Journal of Botany83(7): 836–842.
18.
FanWShanCGuoH, et al. (2019) Dual-gradient enabled ultrafast biomimetic snapping of hydrogel materials. Science Advances5(4): eaav7174.
19.
ForterreY (2013) Slow, fast and furious: Understanding the physics of plant movements. Journal of Experimental Botany64(15): 4745–4760.
20.
ForterreYSkotheimJMDumaisJ, et al. (2005) How the Venus flytrap snaps. Nature433: 421–425.
21.
GebeshuberICGruberPDrackM (2009) A gaze into the crystal ball: Biomimetics in the year 2059. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science223: 2899–2918.
22.
GladmanASMatsumotoENuzzoR, et al. (2016) Biomimetic 4D printing. Nature Materials15: 413–418.
23.
HarlowWMCôtéWADayAC (1964) The opening mechanism of pine cone scales. Journal of Forestry62(8): 538–540.
24.
HodickDSieversA (1989) On the mechanism of trap closure of Venus flytrap (Dionaea muscipula Ellis). Planta179(1): 32–42.
25.
HorstmannMHeierLKruppertS, et al. (2019) Comparative prey spectra analyses on the endangered aquatic carnivorous waterwheel plant (Aldrovanda vesiculosa, Droseraceae) at several naturalized microsites in the Czech Republic and Germany. Integrative Organismal Biology1(1): oby012.
26.
IonovL (2014) Hydrogel-based actuators: Possibilities and limitations. Materials Today17(10): 494–503.
27.
KimSWKoJSLeeJG, et al. (2014) Flytrap-inspired robot using structurally integrated actuation based on bistability and a developable surface. Bioinspiration & Biomimetics9(3): 36004.
28.
KnippersJScheibleFOppeM, et al. (2012) Bio-inspired kinetic GFRP-façade for the thematic pavilion of the EXPO 2012 in Yeosu. In: International Symposium of Shell and Spatial Structures (IASS 2012), Yeosu, South Korea, pp.341–347. Madrid: International Association for Shell and Spatial Structures.
29.
KnippersJSchmidUSpeckT (eds.) (2019) Biomimetics for Architecture. Learning From Nature. Basel: Birkhäuser Verlag.
30.
KohlmeyerRRChenJ (2013) Wavelength-selective, IR light-driven hinges based on liquid crystalline elastomer composites. Angewandte Chemie (International ed. in English)52(35): 9234–9237.
31.
KörnerABornLMaderA, et al. (2018) Flectofold—A biomimetic compliant shading device for complex free form facades. Smart Materials and Structures27(1): 017001.
32.
KronestedtEWallesB (1986) Anatomy of the Strelitzia reginae flower (Strelitziaceae). Nordic Journal of Botany6(3): 307–320.
33.
LaschiCRossiterJIidaF, et al. (eds.) (2017) Soft Robotics: Trends, Applications and Challenges. Cham: Springer International Publishing.
34.
Le DuigouACastroM (2016) Evaluation of force generation mechanisms in natural, passive hydraulic actuators. Scientific Reports6: 18105.
35.
LeeHXiaCFangNX (2010) First jump of microgel; actuation speed enhancement by elastic instability. Soft Matter6(18): 4342.
36.
LienhardJSchleicherSPoppingaS, et al. (2011) Flectofin: A hingeless flapping mechanism inspired by nature. Bioinspiration & Biomimetics6(4): 045001.
37.
LimHParkTNaJ, et al. (2017) Construction of a photothermal Venus flytrap from conductive polymer bimorphs. NPG Asia Materials9(7): e399.
38.
MacKinnonRBOomenJPedersen ZariM (2020) Promises and presuppositions of biomimicry. Biomimetics5(3): 33.
39.
MaderABirkholdACaliaroM, et al. (2017) Plant-inspired compliant actuation. In: Proceedings of the 7th GACM Colloquium on Computational Mechanics for Young Scientists from Academia and Industry, pp.233–237. Stuttgart: Institute for Structural Mechanics, University of Stuttgart.
40.
MaderALangerMKnippersJ, et al. (2020) Learning from plant movements triggered by bulliform cells: The biomimetic cellular actuator. Journal of the Royal Society Interface17(169): 0200358.
MarkinVSVolkovAGJovanovE (2008) Active movements in plants. Plant Signaling & Behavior3(10): 778–783.
43.
MasselterTBoldGThielenM, et al. (2018) Bio-inspired materials and structures: A case study based on selected examples. In: YangGXiaoLLamboniL (eds.) Bioinspired Materials Science and Engineering. pp.253–266. Hoboken, NJ: John Wiley & Sons.
MazzolaiBWalkerISpeckT (eds.) (2020b) Research topic on generation GrowBots: Materials, mechanisms, and biomimetic design for growing robots. Frontiers of Robotics and AI 8: 711942.
46.
MederFThielenMMondiniA, et al. (2020) Living plant-based generators for multidirectional wind energy conversion. Energy Technology2020: 2000236.
47.
MustISinibaldiEMazzolaiB (2019) A variable-stiffness tendril-like soft robot based on reversible osmotic actuation. Nature Communications10(1): 344.
48.
PalAGoswamiDMartinezRV (2020) Elastic energy storage enables rapid and programmable actuation in soft machines. Advanced Functional Materials30(1): 1906603.
49.
PoppingaSBauerUSpeckT, et al. (2018a) Motile traps. In: EllisonAMAdamecL (eds.) Carnivorous Plants: Physiology, Ecology, and Evolution. Oxford: Oxford University Press, pp.180–193.
50.
PoppingaSCorreaDBruchmannB, et al. (2020) Plant movements as concept generators for the development of biomimetic compliant mechanisms. Integrative and Comparative Biology60(4): 886–895.
51.
PoppingaSJoyeuxM (2011) Different mechanics of snap-trapping in the two closely related carnivorous plants Dionaea muscipula and Aldrovanda vesiculosa. Physical Review E84: 041928.
52.
PoppingaSKampowskiTMetzgerA, et al. (2016) Comparative kinematical analyses of Venus flytrap (Dionaea muscipula) snap-traps. Beilstein Journal of Nanotechnology7: 664–674.
53.
PoppingaSLienhardJSchleicherS, et al. (2010) Ge-lenkfreie Klappen beiStrelitzia reginae. In: KeselABZehrenD (eds.) Bionik: Patente aus der Natur. Tagungsbeiträge zum 5. Bionik-Kongress. Bremen: Hochschule Bremen, pp.320–326.
54.
PoppingaSMasselterTSpeckT (2013) Faster than their prey: New insights into the rapid movements of active carnivorous plants traps. BioEssays35(7): 649–657.
55.
PoppingaSNestleNŠandorA, et al. (2017) Hygroscopic motions of fossil conifer cones. Scientific Reports7: 40302.
56.
PoppingaSSmaijJWestermeierAS, et al. (2019) Prey capture analyses in the carnivorous aquatic waterwheel plant (Aldrovanda vesiculosa L., Droseraceae). Scientific Reports9: 18590.
57.
PoppingaSZollfrankCPruckerO, et al. (2018b) Toward a new generation of smart biomimetic actuators for architecture. Advanced Materials30(19): 1703653.
58.
ReyssatEMahadevanL (2009) Hygromorphs: From pine cones to biomimetic bilayers. Journal of the Royal Society Interface6(39): 951–957.
59.
RileyKSAngKJMartinKA, et al. (2020) Encoding multiple permanent shapes in 3D printed structures. Materials & Design194: 108888.
60.
RitzmannREQuinnRDFischerMS (2004) Convergent evolution and locomotion through complex terrain by insects, vertebrates and robots. Arthropod Structure & Development33(3): 361–379.
SachseRWestermeierAMyloM, et al. (2020) Snapping mechanics of the Venus flytrap (Dionaea muscipula). Proceedings of the National Academy of Sciences of the United States of America (PNAS)117(27): 16035–16042.
63.
SadeghiADel DottoreEMondiniA, et al. (2020) Passive morphological adaptation for obstacle avoidance in a self-growing robot produced by additive manufacturing. Soft Robotics7(1): 85–94.
64.
SaffarianSBornLKörnerA, et al. (2019) From pure research to biomimetic products: The Flectofold facade shading device. In: KnippersJSchmidUSpeckT (eds.) Biomimetics for Architecture: Learning from Nature. Basel: Birkhäuser Verlag, pp.42–51.
65.
SchleicherSLienhardJPoppingaS, et al. (2015) A methodology for transferring principles of plant movements to elastic systems in architecture. Computer-Aided Design60: 105–117.
66.
SchmiedJULe FerrandHErmanniP, et al. (2017) Programmable snapping composites with bio-inspired architecture. Bioinspiration & Biomimetics12(2): 26012.
67.
SequeiraAAUsmanATharakanOP, et al. (2016) Biologically inspired robots into a new dimension – A review. International Journal of Automation, Mechatronics & Robotics3(1): 106–116.
68.
SkotheimJMMahadevanJ (2005) Physical limits and design principles for plants and fungal movements. Science308(5726): 1308–1310.
69.
ShahinpoorM (2011) Biomimetic robotic Venus flytrap (Dionaea muscipula Ellis) made with ionic polymer metal composites. Bioinspiration & Biomimetics6(4): 46004.
70.
ShahinpoorMThompsonMS (1995) The Venus flytrap as a model for a biomimetic material with built-in sensors and actuators. Materials Science and Engineering: C2(4): 229–233.
71.
ShawGR (1914) The Genus Pinus. Cambridge: Publications of the Arnold Arboretum No. 5.
SpeckT (2015) Approaches to bio-inspiration in novel architecture. In: ImhofBGruberP (eds.) Built to Grow – Blending Architecture and Biology. Basel: Birkhäuser Verlag, pp.145–149.
74.
SpeckT (2020) Roadmap on soft robotics ‘Materials inspired by plants’. Multifunctional Materials (under review).
75.
SpeckOLangerMMyloM (2021) Plant-inspired damage control – An inspiration for sustainable solutions in the Anthropocene. The Anthropocene Review. Epub ahead of print 28 May 2021. DOI: 10.1177/20530196211018489.
76.
SpeckOSpeckT (2021) Functional morphology of plants – A key to biomimetic applications. New Phytologist231(3): 950–956.
77.
SpeckTSpeckO (2008) Process sequences in biomimetic research. In: BrebbiaCA (ed.) Design and Nature IV. Southampton: WIT Press, pp.3–11.
78.
SpeckTSpeckO (2019a) Emergence in biomimetic materials systems. In: WegnerLLüttgeU (eds.) Emergence and Modularity in Life Sciences. Cham: Springer, pp.97–115.
79.
SpeckTSpeckO (2019b) Quo vadis plant biomechanics – Old wine in new bottles or an up-and-coming field of modern plant science?American Journal of Botany106(11): 1–5.
80.
SpeckOSpeckDHornR, et al. (2017) Biomimetic bio-inspired biomorph sustainable? An attempt to classify and clarify biology-derived technical developments. Bioinspiration & Biomimetics12(1): 011004.
81.
SteffenWGrinevaldJCrutzenP, et al. (2011) The Anthropocene: Conceptual and historical perspectives. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences369(1938): 842–867.
82.
SudaHManoHToyotaM, et al. (2020) Calcium dynamics during trap closure visualized in transgenic Venus flytrap. Nature Plants6: 1219–1224.
83.
TedeshiFCarboneG (2014) Design issues for hexapod walking robots. Robotics3(2): 181–206.
84.
TemirelMYenilmezBKnowltonS, et al. (2016) Three-dimensional-printed carnivorous plant with snap trap. 3D Printing and Additive Manufacturing3(4): 244–251.
85.
TimoshenkoS (1925) Analysis of bi-metal thermostats. Journal of the Optical Society of America11(3): 233–255.
van de KampTVagovičPBaumbachT, et al. (2011) A biological screw in a beetle’s leg. Science333(6038): 52.
88.
VincentJFV (2002) Survival of the cheapest. Materials Today5(12): 28–41.
89.
Virtual Exhibition Tour – Exhibition “Baubionik – Biologie beflügelt Architektur” in the Museum for Natural History in Stuttgart (19th October 2017 to 6th May 2018). Available at: https://www.trr141.de/180409_Bionik/ (accessed 22 October 2020).
90.
VolkovAGForde-TuckettVVolkovaM, et al. (2014) Morphing structures of the Dionaea muscipula Ellis during the trap opening and closing. Plant Signaling & Behavior9(2): e27793.
91.
WangXKharaAChenC (2020) A soft pneumatic bistable reinforced actuator bioinspired by Venus flytrap with enhanced grasping capability. Bioinspiration & Biomimetics15(5): 056017.
92.
WaniOMZengHPriimagiA (2017) A light-driven artificial flytrap. Nature Communications8: 15546.
93.
WestermeierASHissNSpeckT, et al. (2020) Functional-morphological analyses of the delicate snap-traps of the aquatic carnivorous waterwheel plant (Aldrovanda vesiculosa) with 2D and 3D imaging techniques. Annals of Botany126: 1099–1107.
94.
WestermeierASPoppingaSKörnerA, et al. (2019) No joint ailments: How plants move and inspire technology. In: KnippersJSchmidUSpeckT (eds.) Biomimetics for Architecture: Learning from Nature. Basel: Birkhäuser Verlag, pp.32–41.
95.
WestermeierASSachseRPoppingaS, et al. (2018) How the carnivorous waterwheel plant (Aldrovanda vesiculosa) snaps. Proceedings of the Royal Society B: Biological Sciences285(1878): 20180012.
96.
YangRLenaghanSCLiY, et al. (2012) Mathematical modeling, dynamics analysis and control of carnivorous plants. In: VolkovAG (ed.) Signaling and Responses. Heidelberg: Springer, pp.63–83.
97.
ZhangZChenDWuH, et al. (2016) Non-contact magnetic driving bioinspired Venus flytrap robot based on bistable anti-symmetric CFRP structure. Composite Structures135: 17–22.
98.
ZhuYZhangJWuQ, et al. (2020) Three-dimensional programmable, reconfigurable, and recyclable biomass soft actuators enabled by designing an inverse opalmimetic structure with exchangeable interfacial crosslinks. ACS Applied Materials & Interfaces12(13): 15757–15764.
