An electric car for Africa, custom-designed for the needs of the population there, that strengthens rural structures and helps drive the economy: scientists have been working intensively towards this goal for four years. The new prototype, the aCar, is designed for passenger and cargo transportation and is also interesting for the European automotive market.
Electricity distribution systems in the USA are gradually being modernized and transposed to smart grids, which make use of two-way communication and computer processing. This is making them increasingly vulnerable to cyber attacks.
Today almost all information stored on hard disc drives or cloud servers is recorded in magnetic media, because it is non-volatile and cheap. For portable devices such as mobile phones and tablets, other forms of non-magnetic memory are used because the technology based on magnetism is impractical and is not energy efficient.
Researchers have found a solution for one of the biggest stumbling blocks preventing zinc-air batteries from overtaking conventional lithium-ion batteries as the power source of choice in electronic devices.
Researchers have now reproducibly demonstrated current blockade -- the ability to switch a device from the insulating to the conducting state where charge is added and removed one electron at a time -- using atomically precise molecular clusters at room temperature. The study shows that single molecules can function as reproducible circuit elements such as transistors or diodes that can easily operate at room temperature.
Scientists at the U.S. Department of Energy’s (DOE) Argonne National Laboratory have engineered a new material to be used in redox flow batteries, which are particularly useful for storing electricity for the grid. The material consists of carefully structured molecules designed to be particularly electrochemically stable in order to prevent the battery from losing energy to unwanted reactions.
Chip makers appreciate what most consumers never knew: silicon's virtues include the fact that it 'rusts' in a way that insulates its tiny circuitry. Two new ultrathin materials share that trait and outdo silicon in other ways that make them promising materials for electronics of the future.
Wind energy pricing for land-based, utility-scale projects remains attractive to utility and commercial purchasers, according to an annual report released by the US Department of Energy. Prices offered by newly built wind projects in the United States are averaging around 2¢/kWh, driven lower by technology advancements and cost reductions.
Production of fuels from regenerative electric power is a component of the energy turnaround. The first 200 l of synthetic fuel have now been produced from solar energy and the air's carbon dioxide under the SOLETAIR project. The mobile chemical pilot plant that can be used decentrally produces gasoline, diesel, and kerosene from regenerative hydrogen and carbon dioxide.
Energy bills could be cut by more than 60 percent -- saving the average household over £600 a year -- if homes were designed to generate, store and release their own solar energy, a report has revealed. The concept has already been proven and is operating successfully on a building in the UK.
For more than 20 years, researchers have been working on sources of terahertz radiation that can be etched onto microchips. In a new article, they now describe a novel design that boosts the power output of chip-mounted terahertz lasers by 80 percent.
Tiny dents in the surface of graphene greatly enhances its potential as a supercapacitor. Even better, it can be made from carbon dioxide in a novel approach. The process uses a heat-releasing reaction to dig micropores into 3-D graphene and could be a useful supercapacitor material.
When hydropower reservoirs traps organic matter, it leads to higher local greenhouse gas emissions. But the emissions are not increased but displaced. A new tool calculates the real greenhouse gas footprints of reservoirs.
New carbon dioxide experiments may lead to artificial, renewable fuels, outlines new research. In chemical reactions performed in the lab, a research team has identified a new additive that helps selectively convert carbon dioxide into fuels containing multiple carbon atoms -— a step toward ultimately making renewable liquid fuels that are not derived from coal or oil.
Small vertical axis wind turbines (VAWTs) possess the ability to effectively operate in the presence of high turbulent flow, which makes them ideal energy harvesting devices in urban and suburban environments. In a new article, researchers present results indicating that an optimally designed VAWT system can financially compete with fossil-fuel based power plants in urban and suburban areas, and even spearhead the development of a net-zero energy building or city.
Researchers have created a new system that can automatically retouch images in the style of a professional photographer. It's so energy-efficient, however, that it can run on a cellphone, and it's so fast that it can display retouched images in real-time, so that the photographer can see the final version of the image while still framing the shot.
Organic solar cells are flexible, transparent, and light-weight -- and can be manufactured in arbitrary shapes or colors. Thus, they are suitable for a variety of applications that cannot be realized with conventional silicon solar cells. Researchers now present sunglasses with colored, semitransparent solar cells applied onto lenses that supply a microprocessor and two displays with electric power.