News tagged with graphite
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) |
2
|
Diamond used to produce graphene quantum dots and nano-ribbons of controlled structure
Kansas State University researchers have come closer to solving an old challenge of producing graphene quantum dots of controlled shape and size at large densities, which could revolutionize electronics and optoelectronics.
May 17, 2012 |
5 / 5 (4) |
0
|
New nanostructure for batteries keeps going and going
(Phys.org) -- For more than a decade, scientists have tried to improve lithium-based batteries by replacing the graphite in one terminal with silicon, which can store 10 times more charge. But after just a ...
May 11, 2012 |
4.8 / 5 (67) |
28
|
Microprocessors from pencil lead
(PhysOrg.com) -- University of Arizona physicists are making discoveries that may advance electronic circuit technology.
Mar 30, 2012 |
4.5 / 5 (10) |
1
|
Researchers theorize cold compression of graphite results in new superhard carbon allotropes
(PhysOrg.com) -- Researchers in China have used math calculations to predict that under cold compression, two new carbon allotropes may be formed. In their paper pre-published on arXiv, the team describes how th ...
Nanotechnology / Nanomaterials
Mar 30, 2012 |
4.6 / 5 (5) |
2
|
Researchers find simple and cheap way to mass-produce graphene nanosheets
Mixing a little dry ice and a simple industrial process cheaply mass-produces high-quality graphene nanosheets, researchers in South Korea and Case Western Reserve University report.
Nanotechnology / Nanomaterials
Mar 26, 2012 |
5 / 5 (33) |
22
|
Graphene and DNA: 'Wonder material' may hold key to fast, inexpensive genetic sequencing
(PhysOrg.com) -- Look at the tip of that old pencil in your desk drawer, and what you'll see are layers of graphite that are thousands of atoms thick. Use the pencil to draw a line on a piece of paper, and ...
Nanotechnology / Nanomaterials
Mar 23, 2012 |
4.4 / 5 (7) |
1
|
Scientists shed light on magnetic mystery of graphite
The physical property of magnetism has historically been associated with metals such as iron, nickel and cobalt; however, graphite – an organic mineral made up of stacks of individual carbon sheets – has baffled ...
Jan 26, 2012 |
4.6 / 5 (7) |
1
|
Graphene enhances many materials, but leaves them wettable
Graphene is the thinnest material known to science. The nanomaterial is so thin, in fact, water often doesn't even know it's there.
Nanotechnology / Nanomaterials
Jan 23, 2012 |
4.8 / 5 (12) |
1
|
Flaky graphene makes reliable chemical sensors
Scientists from the University of Illinois at Urbana-Champaign and the company Dioxide Materials have demonstrated that randomly stacked graphene flakes can make an effective chemical sensor.
Nanotechnology / Nanomaterials
Jan 17, 2012 |
not rated yet |
0
Lubricant in metal-on-metal hip implants found to be graphite, not proteins
A team of engineers and physicians have made a surprising discovery that offers a target for designing new materials for hip implants that are less susceptible to the joint's normal wear and tear.
Dec 22, 2011 |
5 / 5 (4) |
4
|
Graphene ink created for ink-jet printing of electronic components
(PhysOrg.com) -- A group of UK scientists has created a graphene ink that can be used to ink-jet print electronic devices such as thin film transistors.
Nanotechnology / Nanomaterials
Nov 25, 2011 |
4.8 / 5 (15) |
6
|
Camera lets people shoot first, focus later
Startup Lytro unveiled a camera that lets people adjust the focus on photos after they take them.
Electronics / Consumer & Gadgets
Oct 20, 2011 |
5 / 5 (2) |
0
New form of superhard carbon observed
An amorphous diamond – one that lacks the crystalline structure of diamond, but is every bit as hard – has been created by a Stanford-led team of researchers.
Oct 11, 2011 |
4.9 / 5 (20) |
5
|
How diamonds emerge from graphite
Scientists have used a new method to precisely simulate the phase transition from graphite to diamond for the first time. Instead of happening concerted, all at once, the conversion evidently takes place in ...
Sep 21, 2011 |
4.7 / 5 (3) |
0
|
Graphite
The mineral graphite /ˈɡræfaɪt/ is one of the allotropes of carbon. It was named by Abraham Gottlob Werner in 1789 from the Ancient Greek γράφω (graphō), "to draw/write", for its use in pencils, where it is commonly called lead (not to be confused with the metallic element lead). Unlike diamond (another carbon allotrope), graphite is an electrical conductor, a semimetal. It is, consequently, useful in such applications as arc lamp electrodes. Graphite is the most stable form of carbon under standard conditions. Therefore, it is used in thermochemistry as the standard state for defining the heat of formation of carbon compounds. Graphite may be considered the highest grade of coal, just above anthracite and alternatively called meta-anthracite, although it is not normally used as fuel because it is difficult to ignite.
There are three principal types of natural graphite, each occurring in different types of ore deposit:
Highly ordered pyrolytic graphite or highly oriented pyrolytic graphite (HOPG) refers to graphite with an angular spread between the graphite sheets of less than 1°. This highest-quality synthetic form is used in scientific research. The name "graphite fiber" is also sometimes used to refer to carbon fiber or carbon fiber-reinforced polymer.
For more information about Graphite, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
