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Deployable mechanical metamaterials with multistep programmable transformation.

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  • 1Department of Engineering Mechanics, CNMM and AML, Tsinghua University, Beijing 100084, PR China.

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This study introduces a new framework for creating programmable mechanical metamaterials. These engineered materials can change shape multiple times and be reprogrammed, offering advanced functionalities for various applications.

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Area of Science:

  • Materials Science
  • Mechanical Engineering
  • Metamaterials

Background:

  • Engineered metamaterials typically have limited, pre-designed shape transformations.
  • Achieving multiple, sequential shape changes in metamaterials is a significant challenge.

Purpose of the Study:

  • To introduce a robust framework for constructing sequentially programmable and reprogrammable mechanical metamaterials.
  • To enable metamaterials with multiple deployable and reversible configurations.

Main Methods:

  • Inspired by kirigami-based self-folding elements for multistability and programmability.
  • Utilized tunable bistability enabled by temperature-responsive constituent materials.
  • Developed a framework for sequential programming and reprogramming of metamaterial configurations.

Main Results:

  • Demonstrated metamaterials that can be locked into multiple stable deployed configurations.
  • Showcased the ability of these materials to return to original configurations or undergo mode bifurcation.
  • Established a platform for designing metamaterials with multiple reversible configurations.

Conclusions:

  • The developed framework enables the creation of advanced mechanical metamaterials with unprecedented shape-shifting capabilities.
  • This approach overcomes limitations of traditional metamaterials by allowing for sequential and reprogrammable transformations.
  • The findings pave the way for novel applications requiring adaptive and reconfigurable materials.