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Latest Walter de Heer Stories

Physicists Discover How To Change The Crystal Structure Of Graphene
2014-05-01 03:38:14

Daniel Stolte, University of Arizona A University of Arizona-led team of physicists has discovered how to change the crystal structure of graphene, more commonly known as pencil lead, with an electric field, an important step toward the possible use of graphene in microprocessors that would be smaller and faster than current, silicon-based technology. Graphene consists of extremely thin sheets of graphite: when writing with a pencil, graphene sheets slough off the pencil's graphite...

2014-04-08 10:00:09

Rice University lab makes hybrid nanotube-graphene material that promises to simplify manufacturing Carbon nanotubes are reinforcing bars that make two-dimensional graphene much easier to handle in a new hybrid material grown by researchers at Rice University. The Rice lab of chemist James Tour set nanotubes into graphene in a way that not only mimics how steel rebar is used in concrete but also preserves and even improves the electrical and mechanical qualities of both. The...

2014-03-14 12:31:58

DUBLIN, Mar. 14, 2014 /PRNewswire/ -- Research and Markets ( http://www.researchandmarkets.com/research/58fhj7/graphene ) has announced the addition of the "Graphene Materials for Opto & Electronic Applications 2014" report to their offering. (Logo: http://photos.prnewswire.com/prnh/20130307/600769) $141M GRAPHENE MATERIALS MARKET IN 2024 WILL BE DRIVEN MAINLY BY TRANSPARENT CONDUCTIVE ELECTRODES AND ENERGY STORAGE APPLICATIONS Graphene is a two-dimensional (2D) material with...

Atomically Thin Solar Cells
2014-03-10 10:44:34

Vienna University of Technology It does not get any thinner than this: The novel material graphene consists of only one atomic layer of carbon atoms and exhibits very special electronic properties. As it turns out, there are other materials too, which can open up intriguing new technological possibilities if they are arranged in just one or very few atomic layers. Researchers at the Vienna University of Technology have now succeeded for the first time in creating a diode made of tungsten...

New Type Of Electronic Device Suggested By Ballistic Transport In Graphene
2014-02-06 11:59:13

Georgia Institute of Technology Using electrons more like photons could provide the foundation for a new type of electronic device that would capitalize on the ability of graphene to carry electrons with almost no resistance even at room temperature – a property known as ballistic transport. Research reported this week shows that electrical resistance in nanoribbons of epitaxial graphene changes in discrete steps following quantum mechanical principles. The research shows that the...

New Device Architecture For 2D Materials Developed Making Electrical Contact From The 1D Edge
2013-10-31 14:05:13

Columbia University Columbia Engineering researchers have experimentally demonstrated for the first time that it is possible to electrically contact an atomically thin two-dimensional (2D) material only along its one-dimensional (1D) edge, rather than contacting it from the top, which has been the conventional approach. With this new contact architecture, they have developed a new assembly technique for layered materials that prevents contamination at the interfaces, and, using graphene as...

2013-07-09 21:22:44

The unique properties of graphene such as its incredible strength and, at the same time, its little weight have raised high expectations in modern material science. Graphene, a two-dimensional crystal of carbon atoms packed in a honeycomb structure, has been in the focus of intensive research which led to a Nobel Prize of Physics in 2010. One major challenge is to successfully integrate graphene into the established metal-silicide technology. Scientists from the University of Vienna and their...


Word of the Day
out-herod
  • In the phrase to out-herod Herod, to be more violent than Herod (as represented in the old mystery plays); hence, to exceed in any excess of evil.
Herod refers to 'Herod the Great,' a Roman client king and 'a madman who murdered his own family and a great many rabbis.' According to the OED, the term is 'chiefly with allusion to Shakespeare's use' in Hamlet.
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