Origami-inspired active graphene-based paper for programmable instant self-folding walking devices

Area of Science:

• Materials Science
• Nanotechnology
• Robotics

Background:

• Polymer active materials often exhibit slow responses and require harsh operation methods.
• There is a need for advanced materials with programmable actuation and controlled movement.

Purpose of the Study:

• To develop an origami-inspired active material using graphene.
• To overcome the limitations of conventional polymer active materials.
• To create a self-folding paper with programmed gradients for controlled motion.

Main Methods:

• Fabrication of an all-graphene self-folding paper using function-designed graphene oxide as nanoscale building blocks.
• Incorporation of programmed gradients in both vertical and lateral directions.
• Utilizing remote triggers such as light or heating for actuation.

Main Results:

• Demonstration of a single-component gradient structure in the graphene paper.
• Successful fabrication of a self-folding paper capable of adopting predesigned shapes.
• Exhibition of functional device capabilities including walking and turning a corner.
• Remote-controlled actuation via gentle light or heating.

Conclusions:

• The developed graphene-based paper offers a novel solution for active materials.
• The material exhibits programmable shape-morphing and locomotion capabilities.
• Potential applications include advanced sensing, artificial muscles, and robotics.