Shape-morphing nanocomposite origami

Langmuir. 2014 May 20;30(19):5378-85. doi: 10.1021/la404955s. Epub 2014 Apr 1.

Abstract

Nature provides a vast array of solid materials that repeatedly and reversibly transform in shape in response to environmental variations. This property is essential, for example, for new energy-saving technologies, efficient collection of solar radiation, and thermal management. Here we report a similar shape-morphing mechanism using differential swelling of hydrophilic polyelectrolyte multilayer inkjets deposited on an LBL carbon nanotube (CNT) composite. The out-of-plane deflection can be precisely controlled, as predicted by theoretical analysis. We also demonstrate a controlled and stimuli-responsive twisting motion on a spiral-shaped LBL nanocomposite. By mimicking the motions achieved in nature, this method offers new opportunities for the design and fabrication of functional stimuli-responsive shape-morphing nanoscale and microscale structures for a variety of applications.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Hydrophobic and Hydrophilic Interactions
  • Nanocomposites / chemistry*
  • Nanotechnology
  • Nanotubes, Carbon / chemistry
  • Surface Properties

Substances

  • Nanotubes, Carbon