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Autonomous self-burying seed carriers for aerial seeding

Author

Listed:
  • Danli Luo

    (Carnegie Mellon University)

  • Aditi Maheshwari

    (Accenture Labs)

  • Andreea Danielescu

    (Accenture Labs)

  • Jiaji Li

    (Zhejiang University)

  • Yue Yang

    (Zhejiang University)

  • Ye Tao

    (Zhejiang University City College)

  • Lingyun Sun

    (Zhejiang University)

  • Dinesh K. Patel

    (Carnegie Mellon University)

  • Guanyun Wang

    (Carnegie Mellon University
    Zhejiang University)

  • Shu Yang

    (University of Pennsylvania)

  • Teng Zhang

    (Syracuse University
    Syracuse University)

  • Lining Yao

    (Carnegie Mellon University)

Abstract

Aerial seeding can quickly cover large and physically inaccessible areas1 to improve soil quality and scavenge residual nitrogen in agriculture2, and for postfire reforestation3–5 and wildland restoration6,7. However, it suffers from low germination rates, due to the direct exposure of unburied seeds to harsh sunlight, wind and granivorous birds, as well as undesirable air humidity and temperature1,8,9. Here, inspired by Erodium seeds10–14, we design and fabricate self-drilling seed carriers, turning wood veneer into highly stiff (about 4.9 GPa when dry, and about 1.3 GPa when wet) and hygromorphic bending or coiling actuators with an extremely large bending curvature (1,854 m−1), 45 times larger than the values in the literature15–18. Our three-tailed carrier has an 80% drilling success rate on flat land after two triggering cycles, due to the beneficial resting angle (25°–30°) of its tail anchoring, whereas the natural Erodium seed’s success rate is 0%. Our carriers can carry payloads of various sizes and contents including biofertilizers and plant seeds as large as those of whitebark pine, which are about 11 mm in length and about 72 mg. We compare data from experiments and numerical simulation to elucidate the curvature transformation and actuation mechanisms to guide the design and optimization of the seed carriers. Our system will improve the effectiveness of aerial seeding to relieve agricultural and environmental stresses, and has potential applications in energy harvesting, soft robotics and sustainable buildings.

Suggested Citation

  • Danli Luo & Aditi Maheshwari & Andreea Danielescu & Jiaji Li & Yue Yang & Ye Tao & Lingyun Sun & Dinesh K. Patel & Guanyun Wang & Shu Yang & Teng Zhang & Lining Yao, 2023. "Autonomous self-burying seed carriers for aerial seeding," Nature, Nature, vol. 614(7948), pages 463-470, February.
  • Handle: RePEc:nat:nature:v:614:y:2023:i:7948:d:10.1038_s41586-022-05656-3
    DOI: 10.1038/s41586-022-05656-3
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    Cited by:

    1. Darjan Podbevšek & Yeojin Jung & Maheen K. Khan & Honghui Yu & Raymond S. Tu & Xi Chen, 2024. "The role of water mobility on water-responsive actuation of silk," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    2. Patire, Anthony D. PhD & Dion, Francois PhD & Bayen, Alexandre M. PhD, 2024. "Reduce Emissions and Improve Traffic Flow Through Collaborative Autonomy," Institute of Transportation Studies, Research Reports, Working Papers, Proceedings qt726964qq, Institute of Transportation Studies, UC Berkeley.

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