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graphene News
A better limiter for laser light
LITTLE ROCK, Ark. – Fifty years after the birth of the laser, there may be better protection against the light fantastic, reports a team of researchers. They have found that nanographene, a form of carbon that comes in single atomic layers, might be the right choice for an optical limiter, a device that restricts the transmission of light. With 10 times the absorption coefficient of carbon black, nanographene did a better job at preventing light overload than other materials. The researchers also found that...
Scope Reveals New Physics of Graphene
GAITHERSBURG, Md., Sept. 8, 2010 — Using a one-of-a-kind scanning-probe microscope, an international team of researchers discovered that electrons in graphene, which comprise four quantum states, can split into different energies when exposed to extremely low temperatures and...
Cambridge NanoTech Partners with Stanford
CAMBRIDGE, Mass., June 21, 2010 — Atomic layer deposition (ALD) science and equipment provider, Cambridge NanoTech, announced Tuesday its partnership with Stanford University’s Center for Integrated Systems (CIS), a partnership between academia and industry that supports...
Nanocircuit Created on Graphene
ATLANTA, Ga., June 16, 2010 — Scientists have made a breakthrough toward creating nanocircuitry on graphene, which is widely regarded as the most promising candidate to replace silicon as the building block of transistors. The group has devised a simple and quick one-step...
Mining for Quantum Dots
HOUSTON, May 26, 2010 — Graphene, the one-atom-thick, honeycomb-like form of carbon, is the material of choice for physicists on the cutting edge of materials science. Researchers mentored by Boris Yakobson, a Rice professor of mechanical engineering and materials science...
Graphene Still a Great Thermal Conductor
CHESTNUT HILL, Mass., April 14, 2010 — The single-atom thick material graphene maintains its high thermal conductivity when supported by a substrate, a critical step to advancing the material from a laboratory phenomenon to a useful component in a range of nano-electronic devices. The...
Graphene Clears Major Fabrication Hurdle
BERKELEY, Calif., April 13, 2010 — Graphene, the two-dimensional crystalline form of carbon, is a potential superstar for the electronics industry. With freakishly mobile electrons that can blaze through the material at nearly the speed of light – 100 times faster than...
Nanoscale Frictional Characteristics Revealed
PHILADELPHIA, Pa., April 7, 2010 — Friction force microscopy has been used to determine the nanoscale frictional characteristics of four atomically-thin materials, in the process discovering a universal characteristic for these very different materials. Nanotechnology researchers...
Graphene: The rising star in Raman spectroscopy
BEIJING – With its numerous appealing qualities, including biocompatibility, chemical inertness and abundance, graphene has long been a popular metal among chemists and physicists alike. Thanks to these properties, it has found its way into new applications...
Epitaxic Graphene Demonstrated
MIDDLESEX, England, Jan. 20, 2010 – A collaborative research project has brought the world a step closer to producing a new material on which future nanotechnology could be based. Researchers across Europe, including...
Fluorescein Images Graphene
EVANSTON, Ill., Dec. 28, 2009 – Researchers at Northwestern University used the dye fluorescein to create an imaging technique to view graphene, a one-atom-thick sheet that could be used to produce low-cost carbon-based transparent and flexible electronics.
Mess-Free Graphene Growth
ITHACA, N.Y., Nov. 16, 2009 – A research team at Cornell University invented a simple, less expensive way to make graphene electrical devices by growing graphene -- one-atom-thick layers of carbon -- directly onto a silicon wafer.
Electrons Lured From Graphene
NEW BRUNSWICK, N.J., Oct. 21, 2009 – Rutgers researchers discovered novel electronic properties in 2-D sheets graphene that could one day be the heart of speedy and powerful electronic devices. The new findings, previously considered possible by physicists but only now being seen in...
Graphite Proves Ferromagnetic
EINDHOVEN, Netherlands, Oct. 5, 2009 – In what could be promising results for new applications in nanotechnology, such as biosensors and detectors, researchers at Eindhoven University of Technology showed for the first time why ordinary graphite is ferromagnetic, or a permanent magnet at...
Light Links Graphene, Gallium
BRAUNSCHWEIG, Germany, Sept. 18, 2009 – Physikalisch-Technische Bundesanstalt (PTB) scientists succeeded in making graphene visible on gallium arsenide – an achievement previously only possible on silicon oxide – by using a light optical microscope.
Carbon Nanotube Solar Cells
ITHACA, N.Y., Sept. 14, 2009 – Using a rolled-up sheet of graphene instead of traditional silicon, Cornell University researchers created the basic elements of a solar cell that they hope will lead to much more efficient ways of converting light to electricity. But issues such as...
Camera Flash Forms Conductor
EVANSTON, Ill., Aug. 13, 2009 – The new process invented at Northwestern University's McCormick School of Engineering and Applied Science replaces high-temperature heating or chemical reduction by using a camera flash to instantly convert the low-cost insulator graphite oxide into...
PECASE Funds Photonics Work
WASHINGTON, July 13, 2009 -- Scientists and engineers focused on photonics-related work were among the 100 named by President Barack Obama as recipients of the Presidential Early Career Awards for Scientists and Engineers (PECASE), the highest honor bestowed by the US...
Carbon's Crystal Crawl Caught
BERKELEY, Calif., April 1, 2009 — Carbon atoms moving along the edge of a graphene crystal have been captured on film, the first-ever live recording of the dynamics of carbon atoms in graphene. The work could lead to a new level of understanding and control of nanomaterials, such as...
Graphene's Nature Controlled
TROY, N.Y., Jan. 21, 2009 – Researchers now can tune graphene’s electrical properties by growing it on different surfaces, a discovery that could bring the mass production of graphene-based nanoelectronics one step closer to realization. Graphene, a one-atom-thick sheet of...
TEAM Yields Stunning Images
BERKELEY, Calif., Sept. 11, 2008 -- The world's most powerful transmission electron microscope has been used to produce stunning images of individual carbon atoms in graphene, the two-dimensional crystalline form of carbon that is highly prized by the electronics industry. Using...
An LCD Built with Graphene
Jul 1, 2008 — According to a team of researchers from the UK and Russia, thin sheets of carbon could improve LCDs. The group recently demonstrated that graphene — a two-dimensional layer of carbon — can be used to make the conducting transparent thin films...
Sizing Up Graphene
BERKELEY, Calif., June 9, 2008 -- The extraordinary properties of graphene have reportedly been measured with an accuracy never before achieved, confirming many of its strangest features but revealing significant departures from theoretical predictions. Results of research at the...
Graphene-based LCDs Devised
MANCHESTER, England, May 2, 2008 -- Highly transparent and highly conductive ultrathin films have been produced by dissolving chunks of graphite then spraying the resulting graphene onto a glass surface.Researchers at the University of Manchester in England used graphene, which is...
Transistor is 1 Atom Thick
MANCHESTER, England, April 21, 2008 -- Graphene, a single-atom-thick sheet of graphite that combines aspects of semiconductors and metals, has been carved into tiny electronic circuits containing individual transistors not much bigger than a molecule. Kostya Novoselov, PhD, and professor...
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April 2024
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