Sign in | Join us  
      
 Popular Searches:diamond,cbn,tuck point blade,cup wheel,saw blade, brown fused alumina
Home -- Information


  Featured Companies
 • Yantai Cct Metal…
 • Dymend Tools Co.,…
 • Henan Boreas New…
 • Yancheng Xiehe Machinery…
 • EKF Industrial Supplies…
 • Ruishi New Material…
 • MORESUPERHARD
 • Henan Banner New…
 • Zhengzhou best synthetic…
 • Zhengzhou Haixu…

 Print  Add to Favorite
Custom your font size:     

Graphene Is The World's Most Amazing Material, And Now We Have A Simple Way To Make It


Post Date: 20 Mar 2015    Viewed: 332

Graphene just might be the world's most incredible material. A honeycomb-like sheet of pure carbon only one atom thick, it's one million times thinner than a human hair and yet 200 times stronger than steel. It's also an excellent conductor of heat and electricity and is stretchable, flexible, transparent, and impermeable.

And now scientists at Caltech in Pasadena, Calif. say they have figured out how to make the stuff on an industrial scale--a breakthrough that could open the floodgates to a seemingly endless array of graphene-based products.

Game-changing products. How about a cell phone you could fold up like a handkerchief and stick in your pocket? Or a giant video screen you could hang on the wall like a sheet? Or how about ultra-fast-charging batteries, or super-efficient see-through solar cells?

All those and many more products may be available in the not-too-distant future, Dr. David A. Boyd, a staff scientist at the university and the researcher credited with developing the new graphene-making process, told The Huffington Post.

“You could imagine something crazy," Boyd told the Pasadena Star-News. "You could wrap a building in graphene to keep it from falling over.”

Faster, better, cheaper. The new process is faster and simpler than the usual approach to making graphene. Instead of 10 hours and up to 10 separate steps, it involves one step and takes just five minutes, according to a written statement released by the university. And unlike the usual approach, which involves temperatures of 1,000 degrees Celsius (1,800 degrees Fahrenheit), the new process works at temperatures no higher than 420 degrees C. That's cool enough to be compatible with existing electronics manufacturing processes, according to Boyd.

"With this new technique, we can grow large sheets of electronic-grade graphene in much less time and at much lower temperatures," Boyd said in the statement. And those lower temperatures mean fewer defects in the graphene sheets.

Boyd said the new process grew out of an attempt he made to reproduce a previously described method of fabricating graphene, in which a copper surface is heated and then exposed to methane (which supplies the carbon atoms that form the graphene).

A lucky phone call. Boyd wasn't having any luck until a phone call distracted him and he inadvertently let the copper heat for longer than the usual time. When he returned from the call, he discovered that graphene had indeed formed--because the extra heating had removed a key impurity.

"It was an 'A-ha!' moment," Boyd said in the statement. "I realized then that the trick to growth is to have a very clean surface, one without the copper oxide."

Further refinements in the process showed that the copper oxide could be removed without high temperatures. Said Boyd, "We used a different chemistry."

A Nobel past. Graphene was discovered by scientists at the University of Manchester in England on Oct. 22, 2004. The scientists, Andre Geim and Konstantin Novoselov, were awarded the Nobel Prize in Physics in 2010.

A paper describing the new process was published in the March 18 issue of the journal Nature Communications. 


Superhard Material of China

Superhard Material of China

Abrasives and Grinding Products of China

Abrasives and Grinding Products of China

Coated Abrasives of China

Coated Abrasives of China

Chia International Abrasives & Grinding Exposition

China International Abrasives & Grinding Exposition

Home | About Us | Members | Contact | Advertising Quotation
Supported by Yuanfa Information Technology co.,Ltd
Copyright ©Abrasivesunion 2006. All rights reserved
Page rendered in 0.0234 seconds
增值电信业务经营许可证:豫B2-20202116  ICP备案:豫B2-20100036-2