Back in 1991, Nature published a picture from the IMAX movie Antarctica, pointing out that emperor penguins can accelerate from 0 to 7 m/s in less than a second. That got the attention of Flavio Noca, now an aerodynamics professor in Switzerland, who will present a new spherical joint mechanism inspired by penguin propulsion at the next American Physical Society Division of Fluid Dynamics meeting in Pittsburgh.
The first trickle of fuels made from agricultural waste is finally winding its way into the nation's energy supply. But the full benefits of this fuel source remain many years away, and ethanol, which was meant to be a stop-gap until non-food sources of fuel were found, has been far more damaging to the environment than the government predicted.
Researchers from North Carolina State Univ. have developed new technology and techniques for transmitting power wirelessly from a stationary source to a mobile receiver—moving engineers closer to their goal of creating highway “stations” that can recharge electric vehicles wirelessly as the vehicles drive by.
Researchers studying more effective ways to convert woody plant matter into biofuels have identified fundamental forces that change plant structures during pretreatment processes used in the production of bioenergy. Experimental techniques including neutron scattering and x-ray analysis with supercomputer simulations revealed unexpected findings about what happens to water molecules trapped between cellulose fibers.
Across the Dakotas and Nebraska, more than 1 million acres of the Great Plains are giving way to cornfields as farmers transform the wild expanse that once served as the backdrop for American pioneers. This expansion of the Corn Belt is fueled in part by America's green energy policy, which requires oil companies to blend billions of gallons of corn ethanol into their gasoline.
Lithium-air batteries have become a hot research area in recent years: They hold the promise of drastically increasing power per battery weight, which could lead, for example, to electric cars with a much greater driving range. But bringing that promise to reality has faced a number of challenges.
Researchers from the Univ. of Pennsylvania and Drexel Univ. have experimentally demonstrated a new method for solar cell construction which may ultimately make them less expensive, easier to manufacture and more efficient at harvesting energy from the sun. The breakthrough, which is the result of five years of focused research, relies on specifically designed perovskite crystals that deliver a “bulk” photovoltaic effect.
Researchers at the Georgia Institute of Technology have recently demonstrated an integrated rhombic gridding based triboelectric nanogenerator, or “TENG”, that has been proven to be a cost-effective and robust approach for harvesting ambient environmental energy.
A computational method to quantify the adsorption of gas by porous zeolites should help labs know what to expect before they embark upon slow, costly experiments, according to researchers at Rice Univ. The new method created by engineers in Rice’s Multiscale Materials Modeling Lab accurately calculated the ability of two zeolites, small cage-like molecules with enormous surface area, to trap and store gas molecules.
Methane hydrates are a potential energy source, but they are also a potential source of global warming. A pair of cooperating microbes on the ocean floor "eats" this methane in a unique way, and a new study provides insights into their surprising nutritional requirements. Learning how these methane-munching organisms exist in extreme environments could provide clues about how the deep-sea environment might change in a warming world.
A new maritime propulsion technology called the RudderPod, which steers independently of the main propulsion unit, could save up to half a million euros in fuel costs, according to the TRIPOD research project collaborators in Europe who plan to retrofit the new system to a ship for testing. The project aims to improve propeller efficiency as well by integrating RudderPod with new types of propellers.
Japan switched on the first turbine at a wind farm 20 km (12 miles) off the coast of Fukushima, feeding electricity to the grid tethered to the tsunami-crippled nuclear plant onshore. The wind farm near the Fukushima Dai-Ichi nuclear power plant is to eventually have a generation capacity of 1 GW from 143 turbines.
When Iran appeared close to a preliminary deal with world powers over its nuclear program, France stepped up to say: Not so fast — a surprise move that exposed divisions among the United States and other Western negotiators who had long been in lockstep on the issue.
Using inexpensive materials configured and tuned to capture microwave signals, researchers at Duke University's Pratt School of Engineering have designed a power-harvesting device with efficiency similar to that of modern solar panels. The device wirelessly converts the microwave signal to direct current voltage capable of recharging a cell phone battery or other small electronic device.
A groundbreaking nanoparticle system which stimulates the growth of microalgae has been developed by a team of Australian scientists. The technique creates an optical nanofilter that enhances the formation and yield of algae photopigments, namely chlorophyll, by altering the wavelengths of light absorbed by the algae.
Playing pop and rock music improves the performance of solar cells, according to new research. The high frequencies and pitch found in pop and rock music cause vibrations that enhanced energy generation in solar cells containing a cluster of 'nanorods', leading to a 40 percent increase in efficiency of the solar cells.
According to a study published by scientists at the Potsdam Institute for Climate Impact Research, the strategy of assigning a price to global carbon nanotubes emissions could generate a revenue of $32 trillion over the 21st century, exceeding by far the $12 trillion of lost profits from fossil fuel owners.
A set of new building technologies introduced by an alliance of Swiss companies makes it possible to heat and cool buildings without the emission of carbon dioxide. One initial key element of the system is a hybrid collector, built into the roof construction, that serves as a photovoltaic system delivering both solar power and heat that is fed to an underground accumulator.
The Swiss Federal Institute of Technology in Lausanne’s new convention center, opening in April 2014, is being equipped with a glass façade composed of dye solar cells. The project, a world’s first for an exterior window, leverages the potential of dye-sensitive solar cells known as Graetzel cells, which are indifferent to the angle of incidence of light that hits them.
We use aluminum to make planes lightweight, store sodas in recyclable containers, keep the walls of our homes energy efficient and ensure that the Thanksgiving turkey is cooked to perfection. Now, thanks to a group of Japanese researchers, there may soon be a new application for the versatile metal: hydrogen storage for fuel cells.
Researchers at NJIT have developed a flexible battery made with carbon nanotubes that could potentially power electronic devices with flexible displays. According to its developers, this battery can be made as small as a pinhead or as large as a carpet in a living room.
The Ukrainian government signed a shale gas production-sharing agreement with the Chevron, as the country strives for energy independence from neighboring Russia. Energy Minister Eduard Stavitsky said that under the deal, Chevron will initially invest $350 million into exploratory and drilling work in the Oleska field in western Ukraine. Total investment could surpass $10 billion over 50 years.
Many efforts to smooth out the variability of renewable energy sources have focused on batteries, which could fill gaps lasting hours or days. But Massachusetts Institute of Technology’s Charles Forsberg has come up with a much more ambitious idea: He proposes marrying a nuclear power plant with another energy system, which he argues could add up to much more than the sum of its parts.
Flickering façades, curved monitors, flashing clothing, fluorescent wallpaper, flexible solar cells—and all printable. This is no make-believe vision of the future; it will soon be possible using a new printing process for organic light-emitting diodes.
Thermal radiation from the sun is largely lost on most silicon solar cells. Up-converters transform the infrared radiation into usable light, however. Researchers have now for the first time successfully adapted this effect for use in generating power.