Material formed in the wake of the first atomic bomb test contains a strange material that is ordered but that is not a standard crystal.
Category: materials – Page 264
Advance may enable 2D transistors for tinier microchip components
Moore’s Law, the famous prediction that the number of transistors that can be packed onto a microchip will double every couple of years, has been bumping into basic physical limits. These limits could bring decades of progress to a halt, unless new approaches are found.
One new direction being explored is the use of atomically thin materials instead of silicon as the basis for new transistors, but connecting those “2D” materials to other conventional electronic components has proved difficult.
Now researchers at MIT, the University of California at Berkeley, the Taiwan Semiconductor Manufacturing Company, and elsewhere have found a new way of making those electrical connections, which could help to unleash the potential of 2D materials and further the miniaturization of components—possibly enough to extend Moore’s Law, at least for the near future, the researchers say.
Harvard researchers develop long-lasting solid-state battery
To combat this, Li and his team at Harvard have designed their solid-state battery with a multilayer approach that stacks its materials of varying stabilities between the anode and cathode. Much like a sandwich. This multi-material battery sandwich helps alleviate the penetration of lithium dendrites by controlling and containing them rather than preventing them altogether.
As you can see from the image above, the Harvard team has simplified its battery design to a form that’s more our speed. In this case, a BLT sandwich. The top slice of bread represents the lithium-metal anode, followed by lettuce appropriately representing a coating of graphite. The two layers of tomatoes represent the first electrolyte, protecting the delicious middle layer of bacon as the second electrolyte. Everything sits upon the bottom slice of bread, or the cathode. Is anyone else suddenly hungry for batteries?
In this design, dendrites are able to grow through the graphite (lettuce) and first electrolyte (tomato) but are halted when they reach the second electrolyte (bacon), thus preventing the dendrites from shorting the entire battery. This multilayer approach provokes chemistry that makes the second electrolyte too tight for the dendrites to penetrate. Furthermore, the Harvard researchers say this same chemistry can backfill the holes made by dendrites, essentially making the solid-state battery self-healing. Is there anything better than a sandwich that can regenerate itself? Honestly.
NASA spacecraft carrying history-making asteroid sample will head toward Earth
After spending nearly two-and-a-half years together, a NASA spacecraft will bid farewell to its asteroid companion Monday and begin the long journey back to Earth.
The OSIRIS-REx spacecraft is NASA’s first asteroid sample return mission, and it carries a generous amount of material collected from the near-Earth asteroid Bennu.
New “Key-Hole Surgery” Technique to Extract Metals From the Earth – Could Revolutionize the Future of Mining
A team of international researchers, including Dr. Rich Crane from the Camborne School of Mines, University of Exeter, have developed a new method to extract metals, such as copper, from their parent ore body.
The research team has provided a proof of concept for the application of an electric field to control the movement of an acid within a low permeability copper-bearing ore deposit to selectively dissolve and recover the metal in situ.
This is in contrast to the conventional approach for the mining of such deposits where the material must be physically excavated, which requires removal of both overburden and any impurities within the ore (known as gangue material).
Watch the self healing fabric that could save your favourite clothes
Circa 2016
Clothing of the future could have the ability to repair itself after a tear – all you need to do is add water.
Researchers have developed a coating for textiles that can heal itself, and neutralize harmful chemicals.
They say this could one day be used to make chemically protective suits, helping to keep everyone from soldiers to farmers safe from toxic materials.
A boulder-shaped house made from 3D-printed concrete is ready for its first tenants
A Dutch couple have become the proud new tenants of the country’s first ever 3D-printed house.
Elize Lutz and Harrie Dekkers have been given the digital key to the gray, boulder-shaped building in the Bosrijk neighborhood of Eindhoven, in the southern Netherlands.
The single-story home has more than 1000 square feet of floor area, with a spacious living room and two bedrooms.
3D printing increases memory of flexible Silicon chips 7000 times
The U. S. Air Force Research Laboratory (AFRL) and American Semiconductor have combined traditional manufacturing techniques with 3D printed circuitry to produce a flexible Silicon-on-polymer chip.
Besides its material qualities, the new chip has a memory more than 7000 times larger than any comparable commercially available devices, making it suitable as a micro-controller to be integrated into other objects.