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Self-folding devices and materials for biomedical applications.

Christina L Randall¹, Evin Gultepe, David H Gracias

¹Department of Biomedical Engineering, The Johns Hopkins University, Baltimore, MD 21205, USA.

Trends in Biotechnology

|July 19, 2011

Summary

Self-folding methods enable the creation of 3D biomedical devices from 2D patterns. These reconfigurable structures, including containers and surgical tools, respond to environmental cues.

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Area of Science:

Biomedical Engineering
Materials Science
Nanotechnology

Background:

The native cellular environment is inherently three-dimensional (3D).
Existing planar (2D) micro- and nanostructured biomedical devices require extension into the 3D realm.
There is a need for advanced fabrication techniques to create functional 3D biomedical devices.

Purpose of the Study:

To review the application of hinge-based self-folding methods for fabricating 3D biomedical devices.
To highlight the potential of self-folding for creating reconfigurable and responsive structures.
To showcase diverse applications of self-folding in biomedicine.

Main Methods:

Utilizing self-folding techniques based on precisely patterned hinges.
Extending planar lithographic patterning into the third dimension.

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Fabrication of Custom Agarose Wells for Cell Seeding and Tissue Ring Self-assembly Using 3D-Printed Molds

Fabrication of Custom Agarose Wells for Cell Seeding and Tissue Ring Self-assembly Using 3D-Printed Molds

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Designing structures that fold or unfold in response to specific environmental cues.

Main Results:

Creation of precisely patterned polyhedral containers at the nano- to centimeter scale.
Development of 3D scaffolds for cell culture applications.
Fabrication of reconfigurable surgical tools, such as chemical-responsive grippers.

Conclusions:

Hinge-based self-folding is a powerful method for fabricating functional 3D biomedical devices.
Self-folding enables the creation of reconfigurable and environmentally responsive biomedical tools.
This approach offers precise control over structure formation for advanced biomedical applications.