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DropPop: Designing Drop-to-Deploy Mechanisms with Bistable Scissors Structures

on YouTube 14m
Talkat UIST 2025 · 2025-09-28..10-01· [embedded-and-hardware]

speakers

name:Yibo Fu
links:none on file
name:Emily Guan
links:none on file
name:Jianzhe Gu
links:none on file
name:Dinesh K Patel
links:none on file
name:Justin U Soza Soto
links:none on file
name:Yichi Luo
links:none on file
name:Carmel Majidi
links:none on file
name:Josiah Hester
links:none on file
name:Lining Yao
links:none on file

resources

video:https://youtu.be/bl47JL8HDJI
slides:none on file

summary

A deployable scissor lattice uses a single bistable hemispherical cap to store and release elastic energy, driving rapid expansion in 0.2–0.7 s deployment while locking in the expanded state without sustained power. Design ties cap slenderness (radius-to-thickness ≈ 0.23) to released energy so caps deliver more than the linkage needs; measured trigger energies are 0.02–0.14 J and releases reach ~12 J, enabling prototypes up to 1.2 m diameter that work but fracture after multiple drops.

AI-written summary · about

chapters (7)

  1. 0:00Introduction and motivation
  2. 2:53Drop-to-deploy concept demo
  3. 5:47Bistable cap design principles
  4. 7:53Parametric design tool
  5. 10:20Applications and demos
  6. 11:47Limitations and future work
  7. 12:10Q&A session

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