Posts Tagged ‘graphene’
Top Stories - Jun 7, 2011 12:17 - 0 Comments
Nano pickle: Pick the perfect proteins
U. PENN (US) — A new algorithm helps engineers tackle the seemingly impossible task of selecting the right raw materials for nanoscale construction. (more…)
Science & Technology - Feb 3, 2011 12:24 - 0 Comments
Graphene so smooth it sheds water
VANDERBILT (US) — Getting graphene to cast off water is no easy task, but researchers have discovered a way to make water either bead up and run off or spread out in a thin layer on the surface. (more…)
Science & Technology - Dec 17, 2010 12:23 - 0 Comments
Slice nanotubes with sonic booms
BROWN (US) — It’s difficult to imagine getting a precise cut on a carbon nanotube, with a diameter 1/50,000th the thickness of a human hair. The trick, researchers say, is to squeeze and twist nanotubes using sonic booms. (more…)
Science & Technology - Nov 15, 2010 15:09 - 0 Comments
Flaws only make graphene stronger
BROWN (US) — Despite what engineers had suspected, the joints where sheets of graphene meet don’t weaken it—instead the joints are nearly as strong as pure graphene. (more…)
Science & Technology - Nov 11, 2010 15:34 - 0 Comments
Sweet! Graphene made from sugar
RICE (US) — Researchers have learned to make pristine sheets of graphene, the one-atom-thick form of carbon, from plain table sugar and other carbon-based substances. (more…)
Science & Technology - Oct 29, 2010 13:03 - 0 Comments
Templates let graphene grow
GEORGIA TECH (US) — A new “templated growth” technique could remove a significant obstacle to producing the next generation of nano-scale graphene devices. (more…)
Science & Technology - Sep 24, 2010 13:16 - 0 Comments
Why graphene is electronic gold
U. ILLINOIS (US) — Graphene appears to be outpacing its elemental cousin, carbon nanotubes, for use in electronics and other applications. (more…)
Science & Technology - Sep 7, 2010 0:14 - 0 Comments
‘Dead simple’ way to see atomic structure
CALTECH (US)—Using a sheet of carbon just one atom thick, researchers have devised a new technique to visualize the structure of molecules. (more…)
Science & Technology - Jul 27, 2010 12:07 - 0 Comments
Sequence DNA using graphene nanopores
U. PENN (US)—Researchers have developed a new, carbon-based nanoscale platform to electrically detect single DNA molecules. (more…)
Science & Technology - Jun 11, 2010 10:42 - 1 Comment
Graphene nanocircuits edging out silicon?
GEORGIA TECH (US)—Scientists have made a breakthrough toward creating nanocircuitry on graphene, widely regarded as the most promising candidate to replace silicon as the building block of transistors. (more…)
Science & Technology - May 25, 2010 12:46 - 0 Comments
Digging theoretical wells to mine quantum dots
RICE (US)—Graphane, which is modified graphene, is the material of choice for physicists on the cutting edge of materials science. Now researchers have discovered the strategic extraction of hydrogen atoms from a two-dimensional sheet of graphane naturally opens up spaces of pure graphene that look—and act—like quantum dots. (more…)
Science & Technology - Apr 27, 2010 13:02 - 0 Comments
Atomically thin sheets share ‘pucker’ trait
U. PENN (US)—Nanoscientists have used friction force microscopy to determine the nanoscale frictional characteristics of four atomically thin materials, discovering a universal characteristic for these very different materials. (more…)
Science & Technology - Apr 12, 2010 13:19 - 3 Comments
Graphene passes heat transfer test
U. TEXAS (US)—Graphene is one step closer to becoming the ultimate electronic material. A research team reports in the journal Science that graphene still possesses its coveted heat-conducting capability even when supported on a substrate. (more…)
Science & Technology - Apr 11, 2010 12:02 - 2 Comments
Closing in on a carbon-based solar cell
INDIANA (US)—To make large sheets of carbon available for light collection, chemists have devised an unusual solution—attach what amounts to a 3-D bramble patch to each side of the carbon sheet. (more…)
Science & Technology - Apr 1, 2010 8:43 - 0 Comments
‘Puckering’ causes friction on thin sheets
U. PENNSYLVANIA (US)—A team of nanotechnology researchers has used friction force microscopy to determine the nanoscale characteristics of four atomically-thin materials, discovering a universal characteristic for these very different materials. (more…)
Science & Technology - Nov 18, 2009 12:55 - 2 Comments
Marveling over ‘molecular chicken wire’
VANDERBILT (US)—The hottest, thinnest, toughest new material in physics and nanotechnology is graphene: a remarkably flat molecule made of carbon atoms arranged in hexagonal rings much like molecular chicken wire. (more…)
Science & Technology - Nov 12, 2009 14:57 - 0 Comments
Growing graphene without the mess
A conceptual illustration of an array of single atom-thick graphene transistors. Graphene is often hailed as potentially supplanting silicon in electronics, with its remarkable strength, despite its one atom-thick sheets, and its off-the-charts electrical properties. Researchers are experimenting with growing full-scale, four-inch graphene wafers. (Credit: Shivank Garg)
Science & Technology - Sep 17, 2009 19:27 - 7 Comments
Nanotubes may yield greener solar cells
In a carbon nanotube-based photodiode, electrons (blue) and holes (red) release their excess energy to efficiently create more electron-hole pairs when light is shined on the device. (Credit: Nathan Gabor)
