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Team adds spark to 3D printing technology

November 26, 2012

COVENTRY, ENGLAND (Nov. 26, 10:50 a.m. ET) — Scientists at the University of Warwick are developing materials which could one day allow people to print out custom-designed personal electronics such as games controllers.

The researchers have created an inexpensive conductive plastic composite that can be used to produce electronic devices using the latest generation of low-cost 3D printers.

The material, nicknamed “carbomorph,” enables users to lay down electronic tracks and sensors as part of a 3D printed structure – allowing the printer to create touch-sensitive areas for example, which can then be connected to a simple electronic circuit board.

So far the team has used the material to print objects with embedded flex sensors or with touch-sensitive buttons. The next step is to work on printing more complex structures and electronic components including wires and cables.

The research was led by Simon Leigh in the department of dngineering at the University of Warwick in Coventry, who said: “It’s always great seeing the complex and intricate models of devices such as mobile phones or television remote controls that can be produced with 3D printing, but that’s it, they are invariably models that don’t really function.

“We set about trying to find a way in which we could actually print out a functioning electronic device from a 3D printer.

“In the long term, this technology could revolutionalize the way we produce the world around us, making products such as personal electronics a lot more individualized and unique and in the process reducing electronic waste.

“Designers could also use it to understand better how people tactilely interact with products by monitoring sensors embedded into objects.

“However, in the short term I can see this technology having a major impact in the educational sector for example, allowing the next generation of young engineers to get hands-on experience of using advanced manufacturing technology to design fairly high-tech devices and products right there in the classroom.”

The printed sensors can be monitored using existing open-source electronics and freely available programming libraries, he added.

This research is detailed in the study, A simple, low-cost conductive composite material for 3D printing of electronic sensors, published in the open-access journal Plos One.