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Band gaps, made to order

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This artist’s representation shows an electron beam (in purple) being used to create a 2D superlattice made up of quantum dots having extraordinary atomic-scale precision and placement. Credit: Peter Allen Control is a constant challenge for materials scientists, who are always...
According to the researchers, creativity is our ability to think in new and original ways to solve problems. Credit: © Photographee.eu / Fotolia Developing an original and creative idea requires the simultaneous activation of two completely different networks in the brain:...
This is a rendering of what the Osaka University research team's SR device entails. Credit: Megumi Akai-Kasaya In conventional electronics, a great deal of effort is devoted to eliminating stochastic resonance (SR) -- the annoying hiss that generally hinders the detection...
The communication range of many low-power devices is limited to several feet. The UW's long-range backscatter system's sensor (shown in the foreground) was able to communicate with a receiver (held in the distant background) throughout a one-acre farm, a...
Silicon in lithium-ion batteries shows great promise. Credit: Timo Ikonen Silicon -- the second most abundant element in the earth's crust -- shows great promise in Li-ion batteries, according to new research from the University of Eastern Finland. By replacing graphite...
Schematic (animated) of torsional optomechanical resonator for sensing and frequency mixing. Credit: Jianguo Huang The world of nanosensors may be physically small, but the demand is large and growing, with little sign of slowing. As electronic devices get smaller, their ability...
This is an aerial view of the Virgo site showing the Mode-Cleaner building, the Central building, the three kilometer-long west arm and the beginning of the north arm. The other buildings include offices, workshops, computer rooms and the control...
Silicon carbide power devices, like the one shown here, are more efficient than their silicon counterparts. Credit: NC State University Researchers from North Carolina State University are rolling out a new manufacturing process and chip design for silicon carbide (SiC) power...
A new report shows a dismaying inability by students to reason about information they see on the Internet. Credit: © Kaspars Grinvalds / Fotolia When it comes to evaluating information that flows across social channels or pops up in a Google...
Close up of the robotic gripper made by the Cutkosky lab at Stanford University. The gripper is designed to grab objects in zero gravity using their gecko-inspired adhesive. Credit: Kurt Hickman/Stanford News Service Right now, about 500,000 pieces of human-made debris...
Stretchy, bendable electronics could have many uses, such as monitoring patients' health and keeping tabs on airplanes. Credit: Benjamin Leever, Ph.D. A new world of flexible, bendable, even stretchable electronics is emerging from research labs to address a wide range of...