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Scientists have created a new method to print electronic circuits using a 3D printer.


A team of researchers from the University of Nottingham can now rapidly 3D print fully functional electronic circuits that contain electrically-conductive metallic inks and insulating polymeric inks, which could be useful for medical devices, radio frequency shielding surfaces and novel structures for harvesting solar energy.

“Being able to 3D print conductive and dielectric materials [electrical insulators] in a single structure with the high precision that inkjet printing offers, will enable the fabrication of fully customized electronic components,” Chris Tuck, a professor of Materials Engineering and lead investigator of the study, said in a statement. “You don't have to select standard values for capacitors when you design a circuit, you just set the value and the printer will produce the component for you.”

The circuits can be produced using a single inkjet printing process where an ultraviolet light rapidly solidifies the inks.

The new method paves the way for the electronics manufacturing industry to produce fully functional components, including 3D antennas and full printed sensors from multiple materials such as metals and plastics.

The researchers combined 2D printed electronics with 3D printing and expanded the impact of Multifunctional Additive Manufacturing—which involves printing multiple materials in a single additive manufacturing system to create components that have broader functionalities.

Existing systems do not typically use more than one material, limiting the functionality of the printed structures. By having two materials like a conductor and an insulator, the researchers expanded the range of functions in electronics.

Using this method, the researchers can create a wristband that includes a pressure sensor and wireless communication circuitry that could be 3D printed and customized for the wearer in a single process.

The new method also speeds up the solidification process of the conductive inks to less than a minute per layer.

“Printing fully functional devices that contain multiple materials in complex, 3D structures is now a reality,” Richard Hague, director of the Centre for Additive Manufacturing (CfAM), said in a statement. “This breakthrough has significant potential to be the enabling manufacturing technique for 21st century products and devices that will have the potential to create a significant impact on both the industry and the public.”
Nano Dimension's DragonFly 2020 Pro 3D printer is a highly accurate and versatile inkjet deposition and curing system for printing professional multilayer circuit boards.

The DragonFly 2020 Pro 3D Printer represents an evolution unlike anything the industry has seen before. The rapid prototyping capabilities of the DragonFly 2020 Pro 3D Printer for professional 3D printed electronics completely transforms the ways product development teams work. No more waiting days or weeks for a custom PCB prototype that has to be fabricated offsite.

The DragonFly 2020 Pro 3D Printer offers the flexibility to print an entire board or just part of a circuit. You can develop the RF and digital sections of the board in parallel, test and iterate on the fly.

The DragonFly 2020 Pro 3D Printer empowers progress and encourages innovation, lessening development risks and enabling faster times-to-market - and ultimately, better products.

he DragonFly 2020 sets new standards for accuracy, complexity and speed in the fields of 3D printing and electronics prototyping.

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From proofs of concept, to design validation, to multilayer PCB prototypes in-house additive manufacturing shortens design and test cycles, from months or weeks to days. Development teams can now introduce more agile development processes at every prototyping stage in order to reduce time-to-market and increase innovation.

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