Tech

Researchers at the Department of Energy's Argonne National Laboratory have developed a new approach to increasing the capacity and stability of rechargeable lithium-ion batteries.

The technology is based on a new material for the positive electrode that is comprised of a unique nano-crystalline, layered-composite structure.

Argonne’s strategy uses a two-component “composite” structure -- an active component that provides for charge storage is embedded in an inactive component that stabilizes the structure.

Solar powered mobility scooters could soon be on the streets thanks to the work of a student at The University of Nottingham. Matt Alvey, who is studying Architecture and Environmental Design, says the photovoltaic (solar electric) recharging system will turn the mobility vehicles truly green.

Collaborative research between scientists in the UK and USA has led to a major breakthrough in the understanding of antiferromagnets, published in this week's Nature.

Screens that not only display images but also generate their own power are on the horizon.

One of the new display technologies will be suitable for cellphones, making their batteries last far longer than they do now. The other could lead to selfpowered electronic billboards.

Terahertz (THz) radiation, or far-infrared light, can penetrate clothing and other materials to provide images of concealed weapons, drugs, or other objects. However, THz scanners must usually be very close to the objects they are imaging because water vapor in air absorbs THz radiation so strongly that most of it never reaches the object to be imaged.

A new technique for creating films of barium titanate (BaTiO3) nanoparticles in a polymer matrix could allow fabrication of improved capacitors able to store twice as much energy as existing devices. The improved capacitors could be used in consumer devices such as cellular telephones – and in defense applications requiring both high energy storage and rapid current discharge.Scanning electron micrographs of barium titanate (BaTiO3) nanocomposites with polycarbonate (left, top and bottom) and Viton (right, top and bottom) polymer matrices.

An electrical circuit that should carry enough power to produce the long-sought goal of controlled high-yield nuclear fusion and, equally important, do it every 10 seconds, has undergone extensive preliminary experiments and computer simulations at Sandia National Laboratories' Z machine facility.

That's right, you can roll your own robot. But why are you reading about it? Go to the TeRK web site and start building . The Qwerk controller is available for sale from Charmed Labs.

These are sophisticated machines that wirelessly connect to the Internet but anyone can build them from off-the-shelf parts.

An independent study group, convened by AAAS’s Center for Science, Technology and Security Policy, has issued a report on the proposed Reliable Replacement Warhead (RRW) and its role in the future U.S. nuclear weapons program.

The panel concluded that most of the anticipated benefits of the proposed RRW program -- more easily maintained nuclear weapons with enhanced performance margins, improved safety and security properties, and greater ease of manufacture -- would occur in the long term subsequent to modernization of the weapons production complex.

Ultra-hard materials are used for everything from drills that bore for oil and build new roads to scratch-resistant coatings for precision instruments and the face of your watch.