As this technology continues to develop, it would be interesting to understand the expected print life of the cartridges for certain types of pastes. From the articles, it seems that the current strategy is to allow quick replacement of the heads (similar to an inkjet printhead cartridge), so I'm assuming that these cartridges are currently planned on being low-cost and disposible. (By the way, the peanut butter prototype was impressive).
William, both capacitive and conductive features can be 3D printed with this technology, mentioned on the company's website. We also give a link in the story for more info on the ink's characteristics. Transistors? Not quite yet.
Printing conductors is a worthwhile thing, but to gain much functionality there need to be other parts as well. Resistors and transistors would allow some functionality, but it seems that they would need to be placed, rather than printed.
Syringe extruders have been used in medical R&D for 3D printing various types of organ-like materials. But this is a new development in industrial uses. The combination of plastics and conductive viscous ink 3D printed in one pass is still in its early stages, but the open source technology means it can be developed faster via crowdsourcing.
An MIT research team has invented what they see as a solution to the need for biodegradable 3D-printable materials made from something besides petroleum-based sources: a water-based robotic additive extrusion method that makes objects from biodegradable hydrogel composites.
Alcoa has unveiled a new manufacturing and materials technology for making aluminum sheet, aimed especially at automotive, industrial, and packaging applications. If all its claims are true, this is a major breakthrough, and may convince more automotive engineers to use aluminum.
NASA has just installed a giant robot to help in its research on composite aerospace materials, like those used for the Orion spacecraft. The agency wants to shave the time it takes to get composites through design, test, and manufacturing stages.
The European Space Agency (ESA) is working with architects Foster + Partners to test the possibility of using lunar regolith, or moon rocks, and 3D printing to make structures for use on the moon. A new video shows some cool animations of a hypothetical lunar mission that carries out this vision.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.