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graphene News
'Invisible' Graphene Layer Protects Nanowires from Radiation Damage
WEST LAFAYETTE, Ind., Nov. 10, 2015 — Wrapping silver nanowires in a one-atom-thick layer of graphene protects the structures from radiation damage that has historically prevented their use on a commercial scale. "The damage occurs in medical imaging, in space applications and just from long-term exposure to sunlight," said Suprem Das, a former Purdue University doctoral student who is now a postdoctoral researcher at Iowa State University and The Ames Laboratory, who helped lead the study. Silver nanowires are flexible
Graphene Confines Light for Nanomolecular Sensing
LAUSANNE, Switzerland, July 10, 2015 — A plasmonic sensor made of graphene can conduct complex analyses of the smallest molecules without altering them. The device overcomes a limitation of traditional IR absorption spectroscopy, according to researchers at the Swiss Federal Institute of...
IOP Recognizes 4 for Photonics, Optics Research
LONDON, July 8, 2015 — University of Southampton professor Nikolay Zheludev has been awarded the 2015 Young Medal by the Institute of Physics in recognition of his work in optical metamaterials, nanophotonics and global leadership. Zheludev is deputy director of the...
Photonics Advances in the ‘Land of Ideas’
Mar 26, 2015 — The Abbe refractometer. The stauroscope. The Easter Bunny, the modern tradition of Christmas trees, and the accordion. All of these originated in Germany, and each has made a significant impact on the world. And the country’s innovative spirit...
Trends in New Materials
Jan 16, 2015 — Scientists are developing an entirely new generation of ultrathin materials such as graphene and germanene, whose photonic properties promise a new frontier of components and devices. Graphene is a wonder material: a sheet of pure, stable carbon in...
Material Overcomes Plasmon Damping
BARCELONA, Spain, Jan. 13, 2015 — High-quality graphene sandwiched between two films of hexagonal boron nitride allows plasmons to propagate over relatively large distances without losing energy. A research team led by the Institute Of Photonic Sciences (ICFO) studied the material...
Laser Creates Graphene Electronics from Polymer
HOUSTON, Dec. 10, 2014 — An IR CO2 laser operating at room temperature can turn cheap polymer into multilayer graphene with heightened electrical conductivity and capacitance. Researchers at Rice University say their one-step laser-induced graphene (LIG) process could...
Graphene Phenomenon Could Enable New Lasers
DRESDEN, Germany, Nov. 25, 2014 — Understanding the dynamics of electrons in graphene under strong magnetic fields could lead to development of new types of broadband lasers. An international team led by Helmholtz-Zentrum Dresden-Rossendorf (HZDR) exposed graphene to a 4-Tesla...
Deposition Technique Enables Large-Scale MoS2 Fabrication
SOUTHAMPTON, England, Sept. 24, 2014 — A new technique for fabricating larger amounts of molybdenum disulfide than previously possible could lead to an expanded array of optoelectronic devices. The technique involves depositing nanoscale MoS2 thin films on a variety of substrates via...
Inorganic Semiconductors Guide New Optoelectronic Devices
SEOUL, South Korea, Sept. 22, 2014 — Inorganic Semiconductors Guide New Optoelectronic Devices SEOUL, South Korea, Sept. 22, 2014 — Inorganic compound semiconductors could potentially replace those developed with organic materials. A research team from Seoul National University...
Video: University, Spinoff Develop Flexible Graphene Display
CAMBRIDGE, England, Sept. 11, 2014 — A prototype flexible display that uses graphene could lead to wider implementation of the material in flexible electronics.
Fast, Room-Temperature THz Detector Made of Graphene
COLLEGE PARK, Md., Sept. 8, 2014 — COLLEGE PARK, Md., Sept. 8, 2014 — A prototype graphene photodetector is capable of detecting terahertz frequencies quickly and at room temperature, possibly enabling a new generation of see-through imaging. A hot-electron photothermoelectric...
NSF Grant Funds Study of 'Next Graphene'
RIVERSIDE, Calif., Aug. 13, 2014 — A nearly $1.7 million grant will advance the study of what engineers are calling “the next graphene,” which could play a pivotal role in optoelectronics and other devices. A team from the University of California, Riverside, received the...
Artificial Retinas Using Graphene Called Biocompatible
MUNICH, Aug. 11, 2014 — Viable artificial retinas could be possible using graphene. Researchers from the Technical University of Munich, in collaboration with a team from the Institute of Vision at the Pierre and Marie Curie University in Paris and Pixium Vision, are...
New Material Allows for Ultra-Thin Solar Cells
WIEN, Austria, August 5, 2014 — A new structure that combines atomic-layered semiconductor materials could pave the way to new, more efficient solar cells. Researchers from the Vienna University of Technology created the new structure, which merges together two semiconductor...
Light Pulses Control Graphene Behavior
CAMBRIDGE, Mass., Aug. 4, 2014 — A new way to control how graphene conducts electricity could prompt its use as a broadband light detector. A research team at MIT found that changing the concentration of electrons in a graphene sheet can change the way the material responds to...
Photo-Induced Doping Tames Graphene
BERKELEY, Calif, June 6, 2014 — Doping graphene with boron nitride may be a way to tame the material, introducing a bandgap and making it useful in electronic devices. However, controlling the electrical properties of graphene boron nitride (GBN) heterostructures has been tricky....
New Graphene Film Brings Fast, Low-Cost Communications
MELBOURNE, Australia, May 12, 2014 — A new type of graphene is showing potential for ultrafast telecommunications. A team from Swinburne University of Technology has developed the micrometer-thin continuous graphene oxide film, which demonstrates optical nonlinearity suitable for...
Researchers Probe Graphene Alternatives with SHG
BERKELEY, Calif., May 7, 2014 — Scientists have a new way to study the optical and electric properties of 2-D metals that could compete with graphene in semiconductor and other applications. Using ultrafast IR pulses, researchers with the Lawrence Berkeley National Laboratory...
Stress Activates Light-Emitting Nanowires
ZURICH, April 23, 2014 — Stretching gallium arsenide nanowires makes them better light emitters, while compression makes them better light absorbers.
Carbon Spaser Could Zap Cancer Cells
MELBOURNE, Australia, April 21, 2014 — A carbon-based nanolaser could be used to zap cancer cells, or enable electronics small and flexible enough to be printed on clothing.
Graphene Light Detector Spans IR Spectrum
ANN ARBOR, Mich., March 18, 2014 — A new light detector is the first to sense the full IR spectrum, carrying with it potential advancements in heat-vision technology.
Young Explorers Target Mid-IR Broadband for Real-Life Applications
BRUSSELS, March 5, 2014 — Mid-IR broadband light sources are not yet widely found in real-life applications; however, an international team of young researchers may soon change that by developing an ultracompact, graphene-based version of the device. The project, called...
Graphene Sandwich Improves Biomolecule Imaging
CHICAGO, Feb. 18, 2014 — Atomic-level images of a biological molecule in its natural environment can now be obtained by sandwiching the wet sample between sheets of graphene.
Graphene on chip closing the gap with germanium
VIENNA, CAMBRIDGE, Mass., and HONG KONG – Graphene-based photodetectors can efficiently convert IR light into electrical signals, three independent studies have reported. The work “makes it very likely that graphene will soon replace germanium and compound semiconductors in...
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April 2024
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