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4D Printed Bifurcated Stents with Kirigami-Inspired Structures

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An additive framework for kirigami design.

Levi H Dudte¹, Gary P T Choi², Kaitlyn P Becker^1,3

¹School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA.

Nature Computational Science

|January 4, 2024

Summary

This summary is machine-generated.

This study introduces an additive design method for kirigami mechanical metamaterials. Focusing on empty spaces as linkages, it uses linear algebra for efficient, reconfigurable, and rigid-deployable pattern creation.

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Area of Science:

Mechanical Engineering
Materials Science
Metamaterials Design

Background:

Kirigami, the art of paper cutting, offers unique mechanical properties.
Designing kirigami-based mechanical metamaterials traditionally involves complex optimization.
Existing methods often struggle with reconfigurability and rigid-deployability.

Purpose of the Study:

To develop an efficient additive approach for inverse design of kirigami mechanical metamaterials.
To utilize the negative space within kirigami patterns for design.
To enable control over deployment angles, offsets, and boundary conditions.

Main Methods:

Modeling negative spaces as four-bar linkages.
Establishing a recursive relationship between adjacent linkages.
Employing elementary linear algebra and matrix multiplications for pattern generation.
Iterative procedure encoding compatibility, reconfigurability, and rigid-deployability.

Main Results:

A linear design strategy that avoids non-convex global optimization.
Creation of diverse, rigid-deployable, compact, and reconfigurable kirigami patterns.
Successful physical fabrication of designed kirigami structures using varied materials.

Conclusions:

The additive approach provides an efficient route for designing kirigami mechanical metamaterials.
This method simplifies the design process by focusing on negative space linkages.
The findings offer new possibilities for mechanical metamaterial design and fabrication inspired by kirigami art.