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Hardware

From self-assembling furniture to curving racing car wings, seven GIFs that show the future of 4D printing

By Nick Heath April 24, 2015, 3:30 AM PDT

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From self-assembling furniture to curving racing car wings, seven GIFs that show the future of 4D printing

The Programmable Table

The Programmable Table

Today building something means getting our hands dirty – hammering wood, welding metal and cementing bricks.

But what if everyday objects could build themselves? If tables could snap into shape when you got them home, or pipes could contract and expand to alter the flow of water.

This is what the fields of “4D printing” and programmable matter are aimed at accomplishing, creating objects capable of self-assembly or repair.

At MIT’s Self-Assembly Lab researchers are exploring ways to build items that can reshape themselves, thanks to the specially-treated materials they’re built from.

As the lab’s founder Skylar Tibbits put it in his TED talk: “This is like robotics without wires or motors. You print this part, and it can transform into something else.”

Above is a very practical example of the field’s benefits, and one that could spell the end of flat-pack furniture and inscrutable instructions.

Dubbed The Programmable Table, this is a piece of furniture made using the Wood-Skin process. The approach embeds a pre-stressed textile into the wooden structure to allow it to transform itself into predictable shapes – like this table for instance.

Unlike existing foldable furniture, this prototype made by between MIT’s Self-Assembly Lab and Wood-Skin doesn’t rely on hinges or other complex parts to reshape itself. If the furniture needs to be transported it can be flattened again to make it easier to move.

4dprinting-wood.gif
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From self-assembling furniture to curving racing car wings, seven GIFs that show the future of 4D printing

Warping wood

Image: Self-Assembly Lab, MIT, Christophe Guberan, Erik Demaine, Autodesk Inc

Warping wood

While wood has historically been a tricky material to bend into rnshape, requiring expertise and complex steaming equipment, new rntechniques are overcoming these limitations.

The Self-Assembly Labrn and its partners at the Institute for Computational Design at the rnUniversity of Stuttgart have found ways of inducing specially-treated rnwood composite to bend itself into preset shapes.

In experiments the researchers used water to trigger the wood to reshape itself.

Thern MIT lab suggests this property could be useful to allow items built rnfrom wood composites to adapt to extreme environmental conditions.

Image: Self-Assembly Lab, MIT, Christophe Guberan, Erik Demaine, Autodesk Inc
bending-carbon-fibre360-554.gif
bending-carbon-fibre360-554.gif
From self-assembling furniture to curving racing car wings, seven GIFs that show the future of 4D printing

Flexible fiber

Image: Self-Assembly Lab, MIT, Briggs Automotive Company, Carbitex LLC, Autodesk Inc

Flexible fiber

Carbon fiber is known for its stiffness, high-tensile strength and light weight.

While these characteristics make the material suited to a wide range of applications, it also makes carbon fiber difficult to mould into curved shapes.

However, the MIT lab and its partners found a way to make carbon fiber-based materials bend more easily.

The lab and its partners printed active material onto cured, flexible carbon fiber. Heating the material causes it to change its shape.

The bendable carbon fiber was used to form a wing on the Briggs Automotive Company (BAC) Morphing Supercar and for a flap inside an Airbus plane engine.

The novel approach brings practical benefits. By making a car wing from such a malleable substance, BAC is able tune the aerodynamic performance of its Morphing Supercar.

Image: Self-Assembly Lab, MIT, Briggs Automotive Company, Carbitex LLC, Autodesk Inc
From self-assembling furniture to curving racing car wings, seven GIFs that show the future of 4D printing

Tumultuous textiles

Image: Self-Assembly Lab, MIT, Christophe Guberan, Erik Demaine, Autodesk Inc

Tumultuous textiles

Traditionally, stretching fabric over a solid frame, for instance when building furniture, required molding and purpose-built machinary.

The Self-Assembly Lab and its partners have been experimenting with 3D printing onto stretched fabric and then releasing that fabric to let it form itself into new shapes.

The pattern and the thickness of the 3D printed layers can be altered to change the shape the fabric forms when relaxed.

Image: Self-Assembly Lab, MIT, Christophe Guberan, Erik Demaine, Autodesk Inc
self-folding177-511.gif
self-folding177-511.gif
From self-assembling furniture to curving racing car wings, seven GIFs that show the future of 4D printing

Writing the future

Image: Self-Assembly Lab, MIT, Stratasys

Writing the future

Here a strand fold itself into the letters MIT when placed into water.

It is a demonstration of how printed materials can be treated to arrange themselves into specific shapes.

One potential use the lab forsees for materials able to exhibit such “robotics-like behaviour”, without the need for complex electro-mechanical devices, is to give products and clothes the ability to react to user needs and the environment.

Image: Self-Assembly Lab, MIT, Stratasys
cube-folding274-876.gif
cube-folding274-876.gif
From self-assembling furniture to curving racing car wings, seven GIFs that show the future of 4D printing

Self-building cube

Image: Self-Assembly Lab, MIT, Stratasys

Self-building cube

This flat arrangement of 2D squares folds itself into a cube.

Image: Self-Assembly Lab, MIT, Stratasys
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curve-crease519-723.gif
From self-assembling furniture to curving racing car wings, seven GIFs that show the future of 4D printing

3D printing goes full circle

Image: Self-Assembly Lab, MIT, Stratasys

3D printing goes full circle

This flat circle warps itself to raise itself up when placed in water.

Image: Self-Assembly Lab, MIT, Stratasys
3d-structure-4.jpg
3d-structure-4.jpg
From self-assembling furniture to curving racing car wings, seven GIFs that show the future of 4D printing

Pop-up electronics

Image: University of Illinois at Urbana-Champaign

Pop-up electronics

MIT’s Self-Assembly Lab isn’t the only research centre experimenting with materials that can reshape themselves.

The University of Illinois at Urbana-Champaign has developed a similar technique for generating 3D circuits that could underpin new medical implants, solar cells and other electronics.

The team devised a process for transforming 2D micro- and nano-structures into 3D, using concepts they described as similar to those used to create children’s 3D pop-up books.

Image: University of Illinois at Urbana-Champaign
3d-structure-1.png
3d-structure-1.png
From self-assembling furniture to curving racing car wings, seven GIFs that show the future of 4D printing

Creative circuits

Image: University of Illinois at Urbana-Champaign

Creative circuits

The process could allow complex 3D structures to be built using materials only a few microns thick. Because the process can be used to create silicon structures, it could be used to help make circuitry for range of electronic devices – from battery anodes, to solar cells, and biomedical devices.

Researchers hope the structures will have a use in microelectromechanical components, photonics and optoelectronics and metamaterials.

Image: University of Illinois at Urbana-Champaign
3d-structure-2.png
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From self-assembling furniture to curving racing car wings, seven GIFs that show the future of 4D printing

Under pressure

Image: University of Illinois at Urbana-Champaign

Under pressure

The team at Illinois claim this method bypasses some of the constraints on existing methods for building 3D structures at this scale, which limits the classes of materials that can be used and the complexity of the geometries that can be built.

The technique, called compressive buckling, works by printing a 2D structure onto a layer of material that has been compressed. The 2D printed structure is bound to the compressed substrate at several points and when the substrate is released and expands back into its original shape, the 2D structure sat on top rises up into a 3D form.

See the rest of the images of the Illinois university’s work here.

Image: University of Illinois at Urbana-Champaign
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Nick Heath is a computer science student and was formerly a journalist at TechRepublic and ZDNet.
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