News tagged with graphene
Scientists take steps toward creating artificial graphene
(Phys.org) -- Researchers first observed graphene in 2004 by extracting the single-atom-thick sheets of carbon from bulk graphite. While graphene’s electrical and optical properties have proven to have ...
Nanotechnology / Nanomaterials
May 29, 2012 |
4.5 / 5 (8) |
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Dopant gives graphene solar cells highest efficiency yet
(Phys.org) -- By taking advantage of graphene’s favorable electrical and optical properties, and then adding an organic dopant, researchers have achieved the highest power conversion efficiency yet for ...
May 21, 2012 |
4.8 / 5 (11) |
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Multiple groups claim to create first atom-thick silicon sheets
(PhysOrg.com) -- Since its discovery in 2004, graphene -- sheets of carbon an atom thick -- has sparked a flurry of research into the nanomaterial's potential applications for blazing fast, tiny electronics. ...
Nanotechnology / Nanomaterials
Mar 30, 2012 |
4.9 / 5 (16) |
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Motorized roller could mass-produce graphene-based devices
(PhysOrg.com) -- Finding a simple, scalable way to pattern graphene for future electronics applications is one of the biggest challenges facing graphene researchers. While lithography has been widely used ...
Feb 23, 2012 |
5 / 5 (19) |
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Graphene can be strengthened by folding
(PhysOrg.com) -- With a strength 200 times greater than that of steel, graphene is the strongest known material to exist. But now scientists have found that folding graphene nanoribbons into structures they ...
Nanotechnology / Nanomaterials
Sep 20, 2011 |
4.5 / 5 (17) |
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Graphene nanoribbons grow due to domino-like effect
(PhysOrg.com) -- While many labs are trying to efficiently synthesize large two-dimensional sheets of graphene, a team of researchers from Sweden and the UK is investigating the synthesis of very thin strips ...
Nanotechnology / Nanomaterials
Sep 15, 2011 |
4.6 / 5 (8) |
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Graphene's 'quantum leap' takes electronics a step closer
(PhysOrg.com) -- Writing in the journal Nature Physics, the academics, who discovered the world's thinnest material at The University of Manchester in 2004, have revealed more about its electronic properties.
Nanotechnology / Nanomaterials
Jul 24, 2011 |
4.8 / 5 (18) |
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Rechargeable lithium-sulfur batteries get a boost from graphene
(PhysOrg.com) -- By wrapping tiny sulfur particles in graphene sheets, researchers from Stanford University have synthesized a promising cathode material for rechargeable lithium-sulfur batteries that could ...
Nanotechnology / Nanomaterials
Jul 13, 2011 |
4.2 / 5 (22) |
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Graphene quantum dots could lead to low-cost solar cells and OLEDs
(PhysOrg.com) -- Fabricating photovoltaic devices – those that convert sunlight into electricity – out of organic materials has several advantages over using non-organic materials, such as flexibility ...
Nanotechnology / Nanomaterials
Jul 05, 2011 |
4.2 / 5 (10) |
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Lasers could produce much sought-after band gaps in graphene
(PhysOrg.com) -- One of the most often-cited features of graphene – the two-dimensional crystal lattice made of carbon – is its unique electronic properties. Many of these electronic properties make ...
Jun 20, 2011 |
4.9 / 5 (15) |
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Damaging graphene to create a band gap
(PhysOrg.com) -- "Graphene offers a lot of interesting potential applications for nanoelectronics," Florian Banhart tells PhysOrg.com, "but there is no band gap. This is a well-known problem. Without the band gap, switch ...
Nov 22, 2010 |
3.2 / 5 (9) |
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Toward a better understanding of bilayer graphene
(PhysOrg.com) -- "Graphene is a very exciting material with a number of interesting possibilities, including for use in electronic devices," Pablo Jarillo-Herrero tells PhysOrg.com. "However, all graphene system ...
Nanotechnology / Nanomaterials
Oct 26, 2010 |
4.6 / 5 (7) |
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For the first time, researchers observe graphene sheets becoming buckyballs (w/ Video)
(PhysOrg.com) -- Peering through a transmission electron microscope (TEM), researchers from Germany, Spain, and the UK have observed graphene sheets transforming into spherical fullerenes, better known as ...
Nanotechnology / Nanomaterials
Jun 11, 2010 |
4.5 / 5 (30) |
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Looking for critical behavior in graphene
(PhysOrg.com) -- "One of the hopes people have for graphene is in electronic devices. It is seen as a possible replacement for silicon, due to its unique properties," Herb Fertig tells PhysOrg.com. Graphe ...
Nanotechnology / Nanomaterials
May 18, 2010 |
4.7 / 5 (12) |
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Graphene transistor could advance nanodevices
(PhysOrg.com) -- For years, scientists and researchers have been looking into the properties of carbon nanotubes and graphene for use in nanoelectronics. "There is no real mass application of devices based ...
May 11, 2010 |
4.7 / 5 (22) |
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Graphene
Graphene is a one-atom-thick planar sheet of sp2-bonded carbon atoms that are densely packed in a honeycomb crystal lattice. It can be viewed as an atomic-scale chicken wire made of carbon atoms and their bonds. The name comes from GRAPHITE + -ENE; graphite itself consists of many graphene sheets stacked together.
The carbon-carbon bond length in graphene is approximately 0.142 nm. Graphene is the basic structural element of some carbon allotropes including graphite, carbon nanotubes and fullerenes. It can also be considered as an infinitely large aromatic molecule, the limiting case of the family of flat polycyclic aromatic hydrocarbons called graphenes.
Measurements have shown that graphene has a breaking strength 200 times greater than steel, making it the strongest material ever tested.
For more information about Graphene, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
