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Surface Tension-Driven Self-Folding Polyhedra
Abstract
We discuss finite element simulations and experiments involving the surface tension-driven self-folding of patterned polyhedra. Two-dimensional (2D) photolithographically patterned templates folded spontaneously when solder hinges between adjacent faces were liquefied. Minimization of interfacial free energy of the molten solder with the surrounding fluidic medium caused the solder to ball up, resulting in a torque that rotated adjacent faces and drove folding. The simulations indicate that the folding process can be precisely controlled, has fault tolerance, and can be used to fold polyhedra composed of a variety of materials, ranging in size from the millimeter scale down to the nanometer scale. Experimentally, we have folded metallic, arbitrarily patterned polyhedra ranging in size from 2 mm to 15 microm.
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Citations
Cited by
Self-folding of polymer sheets using local light absorption
Liu, Y., Boyles, J. K., Genzer, J., & Dickey, M. D. (2012) · Soft Matter · doi:10.1039/c1sm06564e · Cited by 523
“2D or not 2D”: Shape-programming polymer sheets
Liu, Y., Genzer, J., & Dickey, M. D. (2016) · Progress in Polymer Science · doi:10.1016/j.progpolymsci.2015.09.001 · Cited by 329
Programmable Self‐Locking Origami Mechanical Metamaterials
Fang, H., Chu, S. A., Xia, Y., & Wang, K. (2018) · Advanced Materials · doi:10.1002/adma.201706311 · Cited by 328
Architected Origami Materials: How Folding Creates Sophisticated Mechanical Properties
Li, S., Fang, H., Sadeghi, S., Bhovad, P., & Wang, K. (2019) · Advanced Materials · doi:10.1002/adma.201805282 · Cited by 320
Self-folding devices and materials for biomedical applications
Randall, C. L., Gultepe, E., & Gracias, D. H. (2012) · Trends in Biotechnology · doi:10.1016/j.tibtech.2011.06.013 · Cited by 269
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Metadata
- Authors
- Leong, T. G., Lester, P. A., Koh, T. L., Call, E. K., & Gracias, D. H.
- Venue
- Langmuir
- Publisher
- American Chemical Society (ACS)
- Published
- 2007-07-04
- Volume
- 23
- Issue
- 17
- Pages
- 8747-8751
- ISSN
- 0743-7463 (ISSN-L)
- 1520-5827
- OpenAlex
- W2054026561
- Cited by
- 165
- References
- 0
- FWCI
- 29.93
- Type
- journal article
- Language
- en
- Open access
- closed
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- Leong, T. G., Lester, P. A., Koh, T. L., Call, E. K., & Gracias, D. H. (2007). Surface Tension-Driven Self-Folding Polyhedra. Langmuir. https://doi.org/10.1021/la700913m
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