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Will 2-D tin be the next super material?

November 22, 2013 8:09 am | News | Comments

A single layer of tin atoms could be the world’s first material to conduct electricity with 100% efficiency at the temperatures that computer chips operate, according to a team of theoretical physicists led by researchers from SLAC National Accelerator Laboratory and Stanford Univ.

Study could lead to paradigm shift in organic solar cell research

November 20, 2013 8:19 am | by Mike Shwartz, Stanford Univ. | News | Comments

Organic solar cells have long been touted as lightweight, low-cost alternatives to rigid solar panels made of silicon. Dramatic improvements in the efficiency of organic photovoltaics have been made in recent years, yet the fundamental question of how these devices convert sunlight into electricity is still hotly debated. Now a Stanford Univ. research team is weighing in on the controversy.

Scientists invent self-healing battery electrode

November 18, 2013 7:47 am | Videos | Comments

Researchers have made the first battery electrode that heals itself, opening a new and potentially commercially viable path for making the next generation of lithium-ion batteries for electric cars, cell phones and other devices. The secret is a stretchy polymer that coats the electrode, binds it together and spontaneously heals tiny cracks that develop during battery operation.


Scientists create low-cost, long-lasting water splitter from silicon and nickel

November 15, 2013 11:10 am | by Mark Shwartz, Stanford Univ. | News | Comments

Stanford Univ. researchers have developed an inexpensive device that uses light to split water into oxygen and clean-burning hydrogen. The goal is to supplement solar cells with hydrogen-powered fuel cells that can generate electricity when the sun isn't shining or demand is high.

Quantity, not just quality, in new brain scan method

November 8, 2013 12:00 pm | News | Comments

Researchers used magnetic resonance imaging to quantify brain tissue volume, a critical measurement of the progression of multiple sclerosis and other diseases.                                 

Unique chemistry in hydrogen catalysts

October 25, 2013 8:23 am | News | Comments

Making hydrogen easily and cheaply is a dream goal for clean, sustainable energy. Bacteria have been doing exactly that for billions of years, and now chemists at the Univ. of California, Davis and Stanford Univ. are revealing how they do it, and perhaps opening ways to imitate them.

Stanford drones open way to new world of coral research

October 16, 2013 2:43 pm | by Rob Jordan, Stanford Univ. | News | Comments

Scientists still know relatively little about the world’s biggest corals, where they are and how long they have lived. Camera-equipped flying robots which have the ability to film these corals from the air promise new insights into climate change effects on important ecosystems.

New heat-resistant materials could improve solar cell efficiency

October 16, 2013 7:30 am | News | Comments

Scientists have created a heat-resistant thermal emitter that could significantly improve the efficiency of solar cells. The novel component is designed to convert heat from the sun into infrared light, which can then be absorbed by solar cells to make electricity. Unlike earlier prototypes that fell apart at temperatures below 1,200 C, the new thermal emitter remains stable at temperatures as high as 1,400 C.


Iron melt network helped grow Earth’s core

October 8, 2013 10:23 am | News | Comments

The same process that allows water to trickle through coffee grinds to create your morning espresso may have played a key role in the formation of the early Earth and influenced its internal organization, according to a new study by scientists at Stanford Univ.'s School of Earth Sciences.

Scientists create technique for high-speed, low-cost epigenomic mapping

October 7, 2013 10:29 am | News | Comments

A new technique developed by researchers at the Stanford Univ. School of Medicine could pave the way to an era of personalized epigenomics. The technique could quickly yield huge amounts of useful information about which genes are active in particular cells. The technology involved is cheap, fast and easy to use, and all that would be needed from the patient is a blood sample or needle biopsy.

Engineers build basic computer using carbon nanotubes

September 26, 2013 8:45 am | News | Comments

A team of Stanford Univ. engineers has built a basic computer using carbon nanotubes, a semiconductor material that has the potential to launch a new generation of electronic devices that run faster, while using less energy, than those made from silicon chips. This unprecedented feat culminates years of efforts by scientists around the world to harness this promising but quirky material.

Scientists publish theory, formula to improve plastic semiconductors

September 24, 2013 8:34 am | News | Comments

Anyone who’s stuffed a smartphone in their back pocket would appreciate the convenience of electronic devices that could bend. Alas, electronic components are generally made from stiff and brittle metals and inorganic semiconductors. Now, researchers have created the first theoretical framework seeking to understand, predict and improve the conductivity of semiconducting polymers.

Scientists make detailed map of current between insulators

September 13, 2013 7:58 am | News | Comments

When scientists found electrical current flowing where it shouldn't be—at the place where two insulating materials meet—it set off a frenzy of research that turned up more weird properties and the hope of creating a new class of electronics. Now scientists have mapped those currents in microscopic detail and found another surprise: Rather than flowing uniformly, the currents are stronger in some places than others.


Scientists use DNA to assemble a graphene transistor

September 9, 2013 8:15 am | by Tom Abate, Stanford Engineering | News | Comments

DNA is the blueprint for life. Could it also become the template for making a new generation of computer chips based not on silicon, but on an experimental material known as graphene? That’s the theory behind a process that Stanford Univ. chemical engineering prof. Zhenan Bao has revealed.

Finding could make iPS cells safer for human use

September 9, 2013 8:04 am | by Krista Conger, Stanford Univ. | News | Comments

Induced pluripotent stem cells, or iPS cells, are a hot commodity right now in biology. The cells, which are created when non-stem cells are reprogrammed to resemble embryonic stem cells, have many potential uses in therapy and drug development. They're usually created by using a virus to add just four genes to the cell to be reprogrammed. However, a molecular understanding of the transformation process is largely lacking.

A new approach to making climate treaties work

August 21, 2013 7:58 am | by Rob Jordan, Stanford University | News | Comments

Why can’t global leaders agree on a broad, effective climate change pact? More than 20 years after they began, international negotiations based on the United Nations Framework Convention on Climate Change have resulted in only one legally binding treaty. That agreement, the Kyoto Protocol, has not been ratified by the U.S., historically the world’s largest carbon emitter. 

Designer glue improves lithium-ion battery life

August 20, 2013 8:11 am | News | Comments

When it comes to improving the performance of lithium-ion batteries, no part should be overlooked; not even the glue that binds materials together in the cathode, researchers at SLAC National Accelerator Laboratory and Stanford Univ. have found. Tweaking that material, which binds lithium sulfide and carbon particles together, created a cathode that lasted five times longer than earlier designs.

New analysis shows how proteins shift into working mode

August 8, 2013 11:01 am | News | Comments

In an advance that will help scientists design and engineer proteins, a team including researchers from SLAC National Accelerator Laboratory and Stanford Univ. has found a way to identify how protein molecules flex into specific atomic arrangements required to catalyze chemical reactions essential for life.

Disorder can improve performance of plastic solar cells

August 7, 2013 7:48 am | by Mark Shwartz, Stanford University | News | Comments

Scientists have spent decades trying to build flexible plastic solar cells efficient enough to compete with conventional cells made of silicon. To boost performance, research groups have tried creating new plastic materials that enhance the flow of electricity through the solar cell. Recently, scientists discovered that disorder at the molecular level actually improves the polymers' performance.

Scientists make first direct images of topological insulator’s edge currents

June 17, 2013 1:57 pm | News | Comments

Researchers have made the first direct images of electrical currents flowing along the edges of a topological insulator. In these strange solid-state materials, currents flow only along the edges of a sample while avoiding the interior. Using an exquisitely sensitive detector they built, the team was able to sense the weak magnetic fields generated by the edge currents and tell exactly where the currents were flowing.

Man-made material shows magnetic personality

June 10, 2013 7:39 am | News | Comments

Scientists from SLAC National Accelerator Laboratory and Stanford Univ. have used finely tuned x-rays at the Stanford Synchrotron Radiation Lightsource to pin down the source of a mysterious magnetism that appears when two materials are sandwiched together. Why is this mysterious? Neither material shows a hint of magnetism on its own.

Study: Earthquake acoustics can indicate if a massive tsunami is imminent

June 7, 2013 12:07 pm | by Bjorn Carey, Stanford University | News | Comments

On March 11, 2011, a magnitude 9.0 undersea earthquake occurred 43 miles off the shore of Japan. It generated an unexpectedly massive tsunami that washed over eastern Japan roughly 30 minutes later. Scientists at Stanford University have identified key acoustic characteristics of this quake that indicated it would cause a large tsunami.

Simple wavelength detector could speed data communications

June 5, 2013 7:40 am | News | Comments

Researchers at SLAC National Accelerator Laboratory and Stanford Univ. have created a new device, smaller than a grain of rice, that could streamline optical data communications. It can directly identify the wavelength of light that hits it, and should scale down to the even tinier dimensions needed for multichannel optical data receivers on future generations of computer chips.

Scientists create novel silicon electrodes to improve lithium-ion batteries

June 4, 2013 7:55 am | News | Comments

Stanford Univ. scientists have dramatically improved the performance of lithium-ion batteries by creating novel electrodes made of silicon and conducting polymer hydrogel, a spongy material similar to that used in contact lenses and other household products. The scientists developed a new technique for producing low-cost, silicon-based batteries with potential applications for a wide range of electrical devices.

Printing innovations provide ten-fold improvement in organic electronics

June 3, 2013 8:06 am | News | Comments

SLAC National Accelerator Laboratory and Stanford Univ. researchers have developed a new printing process for organic thin-film electronics that results in films of strikingly higher quality. The printing process called FLUENCE—fluid-enhanced crystal engineering—results in thin films capable of conducting electricity 10 times more efficiently than those created using conventional methods.

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