Printing tiny batteries A research team from Harvard University and the University of Illinois at Urbana-Champaign has demonstrated the ability to 3D print a battery. This image shows the interlaced stack of electrodes that were printed layer by layer to create the working anode and cathode of a microbattery. (SEM image courtesy of Jennifer A. Lewis.) Cambridge, Mass. – June 18, 2013 – 3D printing can now be used to print lithium-ion microbatteries the size of a grain of sand. To make the microbatteries, a team based at Harvard University and the University of Illinois at Urbana-Champaign printed precisely interlaced stacks of tiny battery electrodes, each less than the width of a human hair. “Not only did we demonstrate for the first time that we can 3D-print a battery; we demonstrated it in the most rigorous way,” said Jennifer A. The results have been published online in the journal Advanced Materials. To print 3D electrodes, Lewis’ group first created and tested several specialized inks.
Our money system guarantees that inequality will get worse - Here is the evidence » Positive Money Written by Graham Hodgson (Guest Author) on . The gap between the very richest and the rest of us has increased continuously over the last thirty years. Did you know that top 10% of population earns on average 6 times more than the bottom 90%? Many factors contribute to this growing gap, but one of the most significant is least understood: the role of money creation by banks. As a volunteer for Positive Money, I’ve spent much of the last two years investigating the connections between inequality and the money system. Here are some of the problems that arise when money is created by banks when they make loans: The entire money supply is effectively ‘on loan’ from the banks. I’ve written up these initial findings into a 16 page academic paper, Banking, Finance and Income Inequality, which you can download below. Within society, a moderate degree of inequality is considered to provide a stimulus to economic progress and general prosperity. Technical Annex We have to act now! 1. 2. 3.
Company develops new fiber-reinforced wood, concrete ink for 3D printing Even though 3D printing is an emerging market and technology, aside from Defense Distributed’s gun, it seems like it has hit a plateau. You can make little or somewhat-bigger-than-little figurines, teacups and mugs that often have leaks, or fragile parts — such as gears — that you can include in a working item, but might quickly wear down. One of the things holding 3D printing back is the material used to print objects. A San Francisco-based company, Emerging Objects, has created new printing materials that aren’t just plastic, but composed of wood, concrete, and even salt. For the uninitiated, normal 3D printing is additive. Emerging Objects has developed a wealth of new materials, such as paper (made from recycled newsprint) as well as a printable salt material. Along with giving a new look to 3D-printed objects, Emerging Objects’ new materials are more environmentally friendly than plastics. As for what Emerging Objects envisions its new materials creating?
‘Spending more time outside is a really political act’ David Bond, the 'marketing director for nature' and his daughter Photo © Jack Barnes There is a scene in new documentary film Project Wild Thing where director David Bond sits under a tree for an hour. It may not sound like the most electrifying cinematic moment, but as he listens to the birdsong and watches the wind rippling across the water, you can feel your own breath slowing down in appreciation of the scene. It is this ‘power to ground’ us that leads Bond to describe nature as a “wonder drug”: one that most of us, especially children, are not taking enough of. The amount of time British children spend outdoors has shrunk by 50% in a generation, for example, and their roaming area – the space in which they are allowed to play unsupervised – by 90%. Bond’s enthusiasm is infectious. “Given a little encouragement, children revel in the bugs and the fresh air and the leaves and the mud” Project Wild Thing is released nationwide on Friday 25 October but is already making waves.
NASA Fires Up Rocket Engine Made of 3-D Printed Parts | Autopia A lab test of the printed injector performed earlier this summer. Photo: NASA NASA hot-fired a rocket engine using an injector fabricated from layers of a nickel-chromium alloy powder. That’s cool. What’s cooler? They used 3-D printing to create it. The injector component is part of the rocket engine that allows the hydrogen fuel and liquid oxygen to pass through to the combustion chamber, where the thrust is produced. “We took the design of an existing injector that we already tested and modified the design so the injector could be made with a 3-D printer,” Brad Bullard, the propulsion engineer responsible for the injector design, explained in a statement from NASA. Using selective laser melting, layers of the nickel-chromium alloy were printed by Directed Manufacturing Inc. of Texas. NASA has big plans for 3-D printing.
Auto produzione casalinga di biogas con il Digestore Compatto biogas il gruppo A.R.T.I. ha realizzato un sistema innovativo che consente l’auto produzione casalinga di biogas da scarti alimentari di tipo farinaceo e vegetale, si tratta di Digestore. Con tale brevetto il gruppo A.R.T.I. ha vinto il premio Ashden per l’Energia Sostenibile nella categoria “food securety. Il prodotto può essere impiegato per la produzione di gas, per la cottura quotidiana degli alimenti e per l’acqua calda sanitaria. Grazie a questo sistema, c’è un risparmio notevole in termini ambientali ed economici: l’ambiente verrebbe alleggerito della presenza di rifiuti e nello stesso tempo si eviterebbe l’utilizzo di GPL e di petrolio che incidono gravemente anche sull’economia delle famiglie. Inoltre l’alimentazione dell’impianto è a costo zero in quanto si utilizzano solo ed esclusivamente scarti alimentari. Le caratteristiche energetiche del sistema rendono il processo più veloce, più efficace e con minore utilizzo di materia rispetto al tradizionale impianto a biomassa animale.
A 3D-printed Moon base baked from lunar dust A possible lunar station near the Moon’s south pole (credit: SinterHab Design Team) Space architects have unveiled a concept for a 3D-printed Moon base called SinterHab near the lunar south pole. Modules would be constructed from lunar dust by microwave sintering and contour crafting, built by a large NASA spider robot. Unlike an earlier, more bulky concept using a mobile printing array of nozzles on a 6 meter frame to spray a binding solution (glue) onto a sand-like building material, the new concept uses microwave sintering to create a solid building material similar to ceramics — no glue requiired. The iron nanoparticles in the lunar dust (produced by space weathering) make it possible to heat the dust up to 1200–1500 degrees C and melt it, even in a domestic microwave oven. When the lunar dust (regolith) is heated and the temperature is maintained below the melting point, particles bond together and the building blocks for the lunar habitat can be created.
Our Invisible Revolution Republished from truthdig.com By Chris Hedges “Did you ever ask yourself how it happens that government and capitalism continue to exist in spite of all the evil and trouble they are causing in the world?” the anarchist Alexander Berkman wrote in his essay “The Idea Is the Thing.” “If you did, then your answer must have been that it is because the people support those institutions, and that they support them because they believe in them.” Berkman was right. It appears that political ferment is dormant in the United States. "It is certain now that a popular revolt is coming." Revolution usually erupts over events that would, in normal circumstances, be considered meaningless or minor acts of injustice by the state. “Because revolution is evolution at its boiling point you cannot ‘make’ a real revolution any more than you can hasten the boiling of a tea kettle,” Berkman wrote. Revolutions, when they erupt, appear to the elites and the establishment to be sudden and unexpected.