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Latest Graphene nanoribbons Stories

2014-04-08 16:01:27

A new theoretical study shows the conductivity conditions under which graphene nanoribbons can become switches in externally controlled electronic devices One of graphene’s most sought-after properties is its high conductivity. Argentinian and Brazilian physicists have now successfully calculated the conditions of the transport, or conductance mechanisms, in graphene nanoribbons. The results, recently published in a paper in EPJ B, yield a clearer theoretical understanding of...

2012-05-22 21:59:53

Metastable material A new study shows that the availability of hydrogen plays a significant role in determining the chemical and structural makeup of graphene oxide, a material that has potential uses in nano-electronics, nano-electromechanical systems, sensing, composites, optics, catalysis and energy storage. The study also found that after the material is produced, its structural and chemical properties continue to evolve for more than a month as a result of continuing chemical...

2012-04-09 09:42:53

A North Carolina State University researcher has developed a more efficient, less expensive way of cooling electronic devices — particularly devices that generate a lot of heat, such as lasers and power devices. The technique uses a “heat spreader” made of a copper-graphene composite, which is attached to the electronic device using an indium-graphene interface film “Both the copper-graphene and indium-graphene have higher thermal conductivity, allowing the device...

2012-02-24 18:00:30

Researchers at the NanoScience Center of the University of Jyväskylä, Finland, and at Harvard University, US, have discovered a novel way to make nanomaterials. Using computer simulations, the researchers have been able to predict that long and narrow graphene nanoribbons can be rolled into carbon nanotubes by means of twisting. The research has received funding from the Academy of Finland. The basic idea is simple and easily explained: just twist the ends of...

2012-01-09 19:13:48

Research by UT Dallas engineers could lead to more-efficient cooling of electronics, producing quieter and longer-lasting computers, and cellphones and other devices. Much of modern technology is based on silicon's use as a semiconductor material, but research recently published in the journal Nature Materials shows that graphene conducts heat about 20 times faster than silicon. "Heat is generated every time a device computes," said "Dr. Kyeongjae "KJ" Cho, associate professor of...

Graphene Rips Follow Rules
2012-01-06 04:36:00

[ Watch the Video ] Rice University simulations show carbon sheets tear along energetically favorable lines Research from Rice University and the University of California at Berkeley may give science and industry a new way to manipulate graphene, the wonder material expected to play a role in advanced electronic, mechanical and thermal applications. When graphene — a one-atom thick sheet of carbon — rips under stress, it does so in a unique way that puzzled...

2011-11-02 09:04:53

Graphene, which is composed of a one-atom-thick layer of carbon atoms in a honeycomb-like lattice (like atomic-scale chicken wire), is the world's thinnest material — and one of the hardest and strongest. Indeed, the past few years have seen an explosion of research into the properties and potential applications of graphene, which has been touted as a superior alternative to silicon. Because graphene is a two-dimensional material, "all of it is an exposed surface," says physical...

2011-06-29 12:08:54

Berkeley Lab Researchers Find New Way to Mass Produce High Quality Boron Nitride Nanoribbons For Hollywood celebrities, the term "splitsville" usually means "check your prenup." For scientists wanting to mass-produce high quality nanoribbons from boron nitride nanotubes, "splitsville" could mean "happily ever after." Scientists with the Lawrence Berkeley National Laboratory (Berkeley Lab) and the University of California (UC) Berkeley, working with scientists at Rice University, have...

2011-01-26 12:49:40

Discovery by Iranian physicists promises cheaper electronics down the road In a development that may revolutionize handheld electronics, flat-panel displays, touch panels, electronic ink, and solar cells, as well as drastically reduce their manufacturing costs, physicists in Iran have created a spintronic device based on "armchair" graphene nanoribbons. Spintronic devices are being pursued by the semiconductor and electronics industries because they promise to be smaller, more versatile, and...

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2010-10-26 14:17:05

Researchers at Rensselaer Polytechnic Institute Use Water to Open, Tune Graphene's Band Gap Researchers at Rensselaer Polytechnic Institute developed a new method for using water to tune the band gap of the nanomaterial graphene, opening the door to new graphene-based transistors and nanoelectronics. By exposing a graphene film to humidity, Rensselaer Professor Nikhil Koratkar and his research team were able to create a band gap in graphene "” a critical prerequisite to creating...


Word of the Day
toccata
  • In music, a work for a keyboard-instrument, like the pianoforte or organ, originally intended to utilize and display varieties of touch: but the term has been extended so as to include many irregular works, similar to the prelude, the fantasia, and the improvisation.
This word is Italian in origin, coming from the feminine past participle of 'toccare,' to touch.
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