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Stanford University

A prototype lithium-ion battery, that incorporates the polymer

In their continuing efforts to increase the energy density of lithium-ion batteries, scientists have began looking at alternative materials for those batteries' electrodes – materials such as silicon. The problem is, electrodes swell and shrink as they absorb and release lithium ions, causing them to break down over time. This is particularly true of silicon, which is brittle by nature. Now, however, scientists have developed a conductive elastic polymer coating for those electrodes, that heals its own cracks after each use.  Read More

Students applying fittings and materials created using the 3D printer to the robotic arms ...

Since it launched in 2011, the Robot House at the Southern California Institute of Architecture (SCI-Arc) has challenged students to create material forms of digital models by orchestrating complex robotic movements in space. But aided by the 3D printer they are breaking even newer ground. Students have begun concocting their own materials, which they can then fit with sensors to follow changes in the material as it is manipulated and, they hope, produce an appropriate response.  Read More

Fused quartz acceleration grating for the Stanford-SLAC dielectric laser electron accelera...

If Angus MacGyver was a particle physicist, he might face a challenge like this: Take a femtosecond laser and a fused quartz grating and make the world's most powerful particle accelerator. Despite the apparent incongruity of the resources and the goal, researchers at the US Department of Energy’s SLAC National Accelerator Laboratory and Stanford University have fabricated a proof-of-principle electron accelerator using just such equipment. In the demonstration, electrons from a 60 MeV beam saw a force of acceleration about ten times greater than possible in a conventional accelerator.  Read More

The Nobel Prize medal is awarded to honor the highest contributions to the sciences (Photo...

The Nobel Prize in Physiology or Medicine for 2013 was awarded jointly today to James E. Rothman, Randy W. Schekman and Thomas C. Südhof "for their discoveries of machinery regulating vesicle traffic, a major transport system in our cells."  Read More

Stanford EE graduate student Max Schulaker holds a silicon wafer on which have been grown ...

In a technological tour de force, researchers at Stanford University have constructed a one-bit, one-instruction programmable computer on a chip using carbon nanotube-based electronics for all logic elements. Containing 178 carbon nanotube field-effect transistors, the computer is only able to carry out only one instruction, called SUBNEG. However, SUBNEG is Turing-complete, allowing the computer to run, albeit with an extraordinary level of inefficiency, any program, given enough memory, time, and programming ingenuity.  Read More

Stanford scientists have used DNA molecules to assemble high-performance graphene transist...

A team of Stanford researchers has found a way to grow graphene nanoribbons using strands of DNA. This important development could be the key to large-scale production of graphene-based transistors that are orders of magnitude smaller, faster and less power-hungry than current silicon technology.  Read More

A Stanford breakthrough in optical metamaterials could enable fabrication of a wide-spectr...

To make a Harry Potter-style invisibility cloak requires that the materials from which it is made have a negative refractive index over all optical wavelengths, from red to violet. However, the artificially-structured optical materials from which cloaks are made thus far have been restricted to a very narrow range of optical wavelengths, limiting their ability to cloak over a range of colors. That obstacle to progress ends now, as a group of Stanford optical engineers at Stanford has succeeded in designing a broadband metamaterial that exhibits a negative refractive index over nearly the entire rainbow.  Read More

Researchers at Stanford University have built a machine which jumps and glides like a flyi...

Researchers at Stanford University have developed a small "aircraft" that resembles a flying fish which can jump and glide over a greater distance than an equivalent jumping robot. Using a carbon fiber spring to take off, the jumpglider has a pivoting wing that stays out of the way during ascent, but which locks into place to glide farther on the way down.  Read More

Stanford University researchers have developed a new, wearable sensor that could revolutio...

Researchers have developed a new type of wearable sensor that could greatly improve the accuracy and practicality of heart monitoring. Developed by Zhenan Bao, a professor of chemical engineering at Stanford University, the paper-thin, stamp-sized sensor is made with flexible organic materials and can be worn under an adhesive bandage on the wrist to monitor the pulse.  Read More

New water-purifying synthetic nanoscavengers can be removed from water magnetically (Photo...

According to a joint World Health Organization/UNICEF report issued this week, an estimated 768 million people relied on unimproved drinking-water sources in 2011, with 185 million of these relying on surface water to meet their daily drinking-water needs. WHO and UNICEF have set a 2030 target for everyone to have access to a safe drinking-water supply and new water-purifying “nanoscavengers” developed by researchers at Stanford University could help achieve this goal.  Read More

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