Self-folding origami: Shape memory composites activated by uniform heating

Michael T. Tolley, Samuel M. Felton, Shuhei Miyashita, Daniel Aukes, Daniela Rus, Robert J. Wood

Research output: Contribution to journalArticle

125 Citations (Scopus)

Abstract

Self-folding is an approach used frequently in nature for the efficient fabrication of structures, but is seldom used in engineered systems. Here, self-folding origami are presented, which consist of shape memory composites that are activated with uniform heating in an oven. These composites are rapidly fabricated using inexpensive materials and tools. The folding mechanism based on the in-plane contraction of a sheet of shape memory polymer is modeled, and parameters for the design of composites that self-fold into target shapes are characterized. Four self-folding shapes are demonstrated: a cube, an icosahedron, a flower, and a Miura pattern; each of which is activated in an oven in less than 4 min. Self-sealing is also investigated using hot melt adhesive, and the resulting structures are found to bear up to twice the load of unsealed structures.

Original languageEnglish (US)
Article number094006
JournalSmart Materials and Structures
Volume23
Issue number9
DOIs
StatePublished - 2014
Externally publishedYes

Fingerprint

Shape memory effect
folding
Ovens
Heating
heating
composite materials
ovens
Composite materials
Hot melt adhesives
self sealing
Polymers
bears
adhesives
contraction
Fabrication
fabrication
polymers

Keywords

  • origami
  • rapid fabrication
  • self-assembly
  • self-folding
  • shape memory polymers
  • smart materials

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Condensed Matter Physics
  • Civil and Structural Engineering
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering
  • Signal Processing

Cite this

Self-folding origami : Shape memory composites activated by uniform heating. / Tolley, Michael T.; Felton, Samuel M.; Miyashita, Shuhei; Aukes, Daniel; Rus, Daniela; Wood, Robert J.

In: Smart Materials and Structures, Vol. 23, No. 9, 094006, 2014.

Research output: Contribution to journalArticle

Tolley, Michael T. ; Felton, Samuel M. ; Miyashita, Shuhei ; Aukes, Daniel ; Rus, Daniela ; Wood, Robert J. / Self-folding origami : Shape memory composites activated by uniform heating. In: Smart Materials and Structures. 2014 ; Vol. 23, No. 9.
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