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Programmable Kiri-Kirigami Metamaterials.

Yichao Tang1, Gaojian Lin1, Shu Yang2

  • 1Applied Mechanics of Materials Laboratory, Department of Mechanical Engineering, Temple University, 1947 North 12th Street, Philadelphia, PA, 19122, USA.

Advanced Materials (Deerfield Beach, Fla.)
|December 28, 2016
PubMed
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Researchers developed programmable kirigami metamaterials using a novel kiri-kirgami method. These materials enable controlled pore opening via stretching or temperature changes, offering potential for energy-saving building skins.

Area of Science:

  • Materials Science
  • Mechanical Engineering
  • Metamaterials

Background:

  • Kirigami, the art of paper cutting and folding, offers unique mechanical properties.
  • Metamaterials exhibit properties not found in naturally occurring materials.
  • Controlling local orientations in kirigami structures is challenging.

Purpose of the Study:

  • To develop programmable kirigami metamaterials with on-demand local tilting orientations.
  • To investigate the actuation mechanisms for pore opening in these metamaterials.
  • To explore the application of these metamaterials as skins for energy-saving buildings.

Main Methods:

  • A novel kiri-kirgami approach was employed for constructing the metamaterials.
  • Prescribed notches were used to achieve controllable local tilting orientations.
Keywords:
actuationbuilding energy savingdirectional bucklingkirigamimechanical metamaterials

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  • Mechanical stretching and temperature variations were used to actuate pore opening.

    • Main Results:

    • Successfully constructed programmable kirigami metamaterials with controllable local tilting.
    • Demonstrated actuation of pore opening through both mechanical stretching and temperature changes.
    • Identified potential for use as skins in energy-saving buildings.

    Conclusions:

    • The kiri-kirgami approach enables the creation of advanced programmable kirigami metamaterials.
    • These metamaterials offer tunable pore-opening functionalities for diverse applications.
    • The developed materials show promise for enhancing building energy efficiency.