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Team develops “spinning trap” to measure electron roundness

December 6, 2013 9:19 am | News | Comments

Are electrons truly round? More specifically, is the electron’s charge between its poles uniform? A group at JILA has tackled this difficult question and has developed a method of spinning electric and magnetic fields around trapped molecular ions to measure the tiny electrons. They haven’t yet matched other electric dipole moment measurement techniques, but eventually the new method should surpass them.

New effect couples electricity and magnetism in materials

November 27, 2013 9:07 am | News | Comments

In materials science, electric and magnetic effects have usually been studied separately. There are, however, extraordinary materials called “multiferroics”, in which electric and magnetic excitations are closely linked. Scientists in Austria have now shown in an experiment that magnetic properties and excitations can be influenced by an electric voltage.

Copper promises cheaper, sturdier fuel cells

November 22, 2013 11:01 am | News | Comments

Converting solar energy into storable fuel remains one of the greatest challenges of modern chemistry. Chemists have commonly tried to use indium tin oxide (ITO) because it has transparency, but it also expensive and rare. Researchers at Duke Univ. has created something they hope can replace ITO: copper nanowires fused in a see-through film.

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Researchers in Germany build bio-based solar cell

November 21, 2013 12:46 pm | News | Comments

In leaves, two proteins are responsible for photosynthesis, and they perform the conversion of carbon dioxide into oxygen and biomass very efficiently. Scientists have now harnessed this capability by embedding these proteins into complex molecules developed in the laboratory. Their bio-based solar cell creates electron current instead of biomass.

Scientists create perfect solution to iron out kinks in surfaces

November 20, 2013 8:50 pm | News | Comments

A new technique that allows curved surfaces to appear flat to electromagnetic waves has been developed by scientists in England. The discovery could hail a step-change in how antennas are tailored to each platform, which could be useful to a number of industries that rely on high performance antennas for reliable and efficient wireless communications.

New milestone could help magnets end era of computer transistors

November 20, 2013 9:48 am | by Sarah Yang, Univ. of California, Berkeley | News | Comments

New work by researchers at Univ. of California, Berkeley could soon transform the building blocks of modern electronics by making nanomagnetic switches a viable replacement for the conventional transistors found in all computers.

Researchers integrate single-crystal BFO onto silicon chip

November 20, 2013 8:31 am | News | Comments

Researchers from North Carolina State Univ. have, for the first time, integrated a material called bismuth ferrite (BFO) as a single crystal onto a silicon chip, opening the door to a new generation of multifunctional, smart devices. Integrating the BFO into the silicon substrate as a single crystal makes the BFO more efficient by limiting the amount of electric charge that “leaks” out of the BFO into the substrate.

Chaotic physics in ferroelectrics hints at brain-like computing

November 19, 2013 7:20 am | News | Comments

Ferroelectric materials are known for their ability to spontaneously switch polarization when an electric field is applied. An Oak Ridge National Laboratory-led team took advantage of this property to draw areas of switched polarization called domains on the surface of a ferroelectric material. To the researchers’ surprise, the domains began forming complex and unpredictable patterns that the researchers say should not be possible.

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Pressure cooking improves electric car batteries

November 19, 2013 7:12 am | by Sean Nealon, Univ. of California, Riverside | News | Comments

Batteries that power electric cars have problems. They take a long time to charge. The charge doesn’t hold long enough to drive long distances. They don’t allow drivers to quickly accelerate. They are big and bulky. By creating nanoparticles with controlled shape, engineers in California believe smaller, more powerful and energy-efficient batteries for vehicles can be built.

Columbia engineers make world's smallest FM radio transmitter

November 18, 2013 9:29 am | News | Comments

A team of scientists have demonstrated new application of graphene using positive feedback. Using graphene’s electrical conduction, Columbia Univ. engineers have created a nano-mechanical system that can create FM signals. It is, in effect, the world's smallest FM radio transmitter.

Structure of bacterial nanowire protein hints at secrets of conduction

November 12, 2013 6:39 pm | by Mary Beckman, PNNL | News | Comments

Tiny electrical wires protrude from some bacteria and contribute to rock and dirt formation. Pacific Northwest National Laboratory researchers studying the protein that makes up one such wire have determined the protein's structure and have shown that the protein's shape and form suggest possible ways for the bacteria to shuttle electrons along the nanowire.

Team demonstrates new paradigm for solar cell construction

November 12, 2013 8:53 am | News | Comments

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.

Triboelectric generator harvests energy from vibration of walking

November 12, 2013 8:44 am | News | Comments

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.

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EPFL's campus has the world's first solar window

November 5, 2013 4:08 pm | News | Comments

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.

Researchers develop stretchable wire-shaped supercapacitor

November 5, 2013 9:23 am | by Karen B. Roberts, Univ. of Delaware | News | Comments

Univ. of Delaware materials scientists have successfully developed a compact, stretchable wire-shaped supercapacitor based on continuous carbon nanotube fibers. When subjected to a tensile strain of 100% over 10,000 charge/discharge cycles, the CNT supercapacitor’s electrochemical performance improved to 108%.

Defective nanotubes turned into light emitters

October 31, 2013 11:36 am | News | Comments

Researchers in Basque country in Spain have developed and patented a new source of light emitter based on boron nitride nanotubes. Suitable for developing high-efficiency optoelectronic devices, the structural defects in the nanotubes help make it extremely efficient in ultraviolet light emission.

Nanoscale engineering boosts performance of quantum dot LEDs

October 25, 2013 11:09 am | News | Comments

Quantum dots are nano-sized semiconductor particles whose emission color can be tuned by simply changing their dimensions. New research at Los Alamos National Laboratory aims to improve quantum dot-based light-emitting diodes by using a new generation of engineered quantum dots tailored specifically to have reduced wasteful charge-carrier interactions that compete with the production of light.

SRC launches synthetic biology research effort at six universities

October 24, 2013 9:04 am | News | Comments

Semiconductor Research Corporation (SRC) has launched a new research program on hybrid bio-semiconductor systems that they hope will provide insights and opportunities for future information and communication technologies. The Semiconductor Synthetic Biology (SSB) program will initially fund research at six universities.

Futuristic copper foam batteries get more bang for the buck

October 24, 2013 8:39 am | News | Comments

Amy Prieto, a chemist at Colorado State Univ. leads a start-up company with the goal of developing a lithium-ion battery that should be safer, cheaper, faster-charging, and more environmentally friendly than conventional batteries now on the market. The key to the technology is copper foam which is easy to manufacture and has high power density.

Tiny “LEGO brick”-style studs make solar panels a quarter more efficient

October 18, 2013 9:39 am | News | Comments

In new research, scientists have demonstrated that the efficiency of all solar panel designs could be improved by up to 22% by covering their surface with aluminium studs that bend and trap light inside the absorbing layer. At the microscopic level, the studs make the surface of the solar panels look similar to the interlocking building bricks played with by children across the world.

Giga-year storage medium could outlive human race

October 17, 2013 2:14 pm | News | Comments

Although the amount of data that can be stored has increased immensely during the past few decades, it is still difficult to actually store data for a long period of time. A researcher has recently demonstrated a way to store data for extremely long periods, even millions of years, using an etched wafer made of tungsten encapsulated by silicon nitride. The material is resistant to both time and elevated temperatures.

Advanced Light Source provides new look at vanadium dioxide

October 17, 2013 1:37 pm | News | Comments

Vanadium dioxide is one of the few known materials that acts like an insulator at low temperatures but like a metal at warmer temperatures starting around 67 C. This temperature-driven metal-insulator transition, the origin of which is still intensely debated, could be induced by the application of an external electric field. Beamline studies at the Advanced Light Source has shed some light on this potential avenue for faster electronics.

New multi-touch sensor is customizable with scissors

October 15, 2013 2:37 pm | News | Comments

People often customize the size and shape of materials like textiles and wood without turning to specialists like tailors or carpenters. In the future this should be possible with electronics, according to computer scientists who have developed a printable multi-touch sensor whose shape and size can be altered by anybody.

Triboelectric generator sources power from the sea

October 14, 2013 11:49 am | News | Comments

Renewable sources like sun and wind aren’t always productive. But waves in the ocean are never still, prompting Georgia Institute of Technology scientists to find a way to produce energy by making use of contact electrification between a patterned plastic nanoarray and water. They have introduced an inexpensive and simple prototype of a triboelectric nanogenerator that could be used to produce energy and as a chemical or temperature sensor.

A better device to detect ultraviolet light

October 7, 2013 2:11 am | News | Comments

Researchers in Japan have developed a new photodiode that can detect in just milliseconds a certain type of high-energy ultraviolet light, called UVC, which is powerful enough to break the bonds of DNA and harm living creatures. The new device shows promise for space-based communication and monitoring ozone depletion.

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