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Research & Technology News

Nanotubes Store Solar Energy Indefinitely
CAMBRIDGE, Mass., July 15, 2011 — Carbon nanotubes can be used to store solar energy and can be recharged when exposed to the sun. Storing the sun's heat in chemical form — rather than converting it to electricity or storing the heat itself in a heavily insulated container — has significant advantages, since in principle the chemical material can be stored for long periods of time without losing any of its stored energy. The problem with that approach has been that, until now, the chemicals needed to perform...
Coated Nanowires Boost Photosensitivity
CAMBRIDGE, Mass., July 14, 2011 — By applying a coating to individual silicon nanowires, researchers at Harvard University and the University of California, Berkeley, have significantly improved the materials’ efficiency and sensitivity — a development that holds promise...
Molecules 'Light Up' Alzheimer's Roots
HOUSTON, July 14, 2011 — A breakthrough in sensing at Rice University could make finding signs of Alzheimer's disease nearly as simple as switching on a light, and should help bring about better medications to treat the devastating disease. The lab of bioengineer...
‘Optics Table on a Chip’ Superpositions Photons
GAITHERSBURG, Md., July 13, 2011 — A tiny, tunable superconducting circuit can place a single microwave photon in two frequencies simultaneously, potentially leading to the long-sought “optics table on a chip.” Researchers at the National Institute of Standards and...
New Electrochromatic Lenses Rapidly Change Color
STORRS, Conn., July 13, 2011 — Quick-changing electrochromatic transition lenses have been created that use an electric current rather than polymers to change colors in films and displays when triggered by light. The new technology has captured the interest of the US military as...
UV-Exposed Nanotubes Emit Red Light
WARSAW, Poland, July 13, 2011 — By simply attaching light-emitting chemicals to carbon nanotubes and exposing them to UV, researchers have enabled the nanotubes to emit red light. To the human eye, carbon nanotubes usually appear as a black powder. They can hardly be forced...
New Laser Tech Beefs Up DVDs and Kills Viruses
RIVERSIDE, Calif., July 12, 2011 — Imagine a laser technology that could do everything from kill viruses to increase storage capacity of DVDs. Now a team from the Bourns College of Engineering at the University of California, Riverside, has made a discovery about semiconductor...
Projecting Safety onto Robot-Filled Work Zones
MAGDEBURG, Germany, July 12, 2011 — Human employees working next to industrial robots — rather than in separate areas — could become common because of a new imaging system that keeps an eye on both. At present, automated helpers are usually enclosed by protective...
Attosecond Science for Solids
GARCHING, Germany, July 12, 2011 — A technique for controlling the motion of electrons using very fast laser pulses, first demonstrated using gaseous atoms or molecules, has been shown to work for electrons emitted from a solid. The results could allow the probing of electron...
Light Propagation Controlled in Photonic Chips
New York, N.Y., July 11, 2011 — In what is being touted as a major breakthrough in the field of telecommunications, scientists built optical nanostructures that can slow down photons and fully control light dispersion. They showed that it is possible for light to propagate from...
Squeezed Light From Single Atoms
GARCHING, Germany, July 11, 2011 — Researchers have shown that an atom interacting with light inside a cavity can alter the wavelike properties of the light, reducing its amplitude or phase fluctuations below the level allowed for classical electromagnetic radiation. The team,...
Billion-Pixel Camera to Help Map the Milky Way
PARIS, July 8, 2011 — The largest digital camera ever built for a space mission has been painstakingly pieced together from 106 separate electronic detectors. The resulting "billion-pixel array" will serve as the supersensitive eye of the European Space Agency’s...
QUEST Begins for Improved Electromagnetic Manipulation
LONDON, July 8, 2011 — Becoming invisible with the swish of a cloak or bringing cell phone coverage to previously unreachable places could soon be a reality with a £4.5 million ($7.22 million) project led by Queen Mary, University of London. The project,...
Laser, Electric Fields Combined for Novel Lab-on-a-Chip Technology
WEST LAFAYETTE, Ind., July 7, 2011 — New technologies that combine a laser with electric fields promise new lab-on-a-chip designs for manipulating bacteria, viruses and DNA in a range of potential applications. A new method, dubbed “hybrid optoelectric manipulation in...
Light Dragged by Slowing It to Speed of Sound
GLASGOW, Scotland, July 7, 2011 — For the first time, light has been slowed to the speed of sound using a technique that could improve optical storage and the processing of quantum information. Scientists at the University of Glasgow dragged light through various substances,...
Windshield-Embedded System Senses Fog, Darkness
BERLIN, July 7, 2011 — An optical sensor designed for use inside windshields can tell the difference between fog and darkness, providing driver-assistance systems with information they need to help prevent accidents. Quite simply, the more a car knows about its...
Knotting Particle Defect Lines
WASHINGTON, July 6, 2011 — Loops and knots have been tied from microscopic topological defect lines that form when the ordering of a nematic liquid crystal is disrupted by the addition of colloidal particles. Knots and links of arbitrary complexity are created and...
Lensless Camera Fits on the Head of a Pin
ITHACA, N.Y., July 6, 2011 — Like a Brownie camera for the digital age, a novel microscopic device developed at Cornell University fits on the head of a pin, contains no lenses or moving parts, costs pennies to make and could revolutionize an array of fields from surgery to...
Robots and Autopilots Could Use a Bird’s-Eye View
CAMBRIDGE, Mass., July 6, 2011 — New research on how birds can fly so quickly and accurately through dense forests may lead to new developments in robotics and autopilots. Scientists from Harvard University trained pigeons to fly through an artificial forest with a tiny...
Unique Luminescence Found in Nanocrystals
BERKELEY, Calif., July 6, 2011 — A fundamental principle of photoluminescence known as “Kasha’s rule” was broken by scientists at the US Department of Energy’s Lawrence Berkeley National Laboratory when they created artificial molecules of semiconductor...
Nanowires Influence Direction, Intensity of LEDs
AMSTERDAM, Netherlands, July 5, 2011 — A new method for controlling the direction and intensity of LED light emission consists of growing partially emitting nanowires that form an ordered pattern, creating a "photonic crystal" that sends light in specific directions. Electron...
QDs Help Make Solar Fuel a Reality
MANCHESTER, England, July 5, 2011 — A solar-nano device is being created with the hope that it can harness the energy of the sun and convert it into a clean fuel alternative. Using quantum dots grafted with catalyst molecules, scientists are harvesting the sun’s energy to...
“Carpet cloak” hides more than its size implies
LYNGBY, Denmark – Optical cloaking is getting a boost from metamaterials in a new technology called “carpet cloaking,” which can conceal a much larger area than other cloaking techniques of comparable size. The new carpet cloak, based on an...
Droop root identified
SANTA BARBARA, Calif. – Nitride-based LEDs are efficient, nontoxic and long-lasting, but they are considered impractical for general lighting because of a drop in efficiency when operating at high power. And now we know why this happens. Researchers at the University...
Graphene optical modulators could speed communications
BERKELEY, Calif. – A new optical device that uses graphene to switch a light on and off could soon break digital communication speed limits. The switching ability is the fundamental characteristic of a network modulator, which controls the speed at which data packets...

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