Slashdot Mirror


Unzipping Nanotubes Makes Superfast Electronics

Al writes "Two research groups have found a way to unzip carbon nanotubes to create nanoribbons of graphene — a material that has shown great promise for use as nanoscale transistors, but which has proven difficult to manufacture previously. A team led by James Tour, a professor of chemistry and computer science at Rice University, and another led by Hongjie Dai, a professor of chemistry at Stanford University, both figured out ways to slice carbon nanotubes open to create the nanoribbons. The Stanford team was funded by Intel, and the Rice group is in talks with several companies about commercializing their approach."

23 of 64 comments (clear)

  1. Unzipping nano-tubes!"! by Samschnooks · · Score: 4, Funny

    Hey, that's what an ex-girlfriend of mine called it: her nano-tube. Bitch. Oh, carbon nano-tubes.....gotta hit Cancel.

  2. Re:It's not hard to find. by Eric+Smith · · Score: 2, Insightful

    Oops, sorry, meant to post it to a different article!

  3. Re:Anyone... by poena.dare · · Score: 5, Funny

    Nanoribboned for her pleasure.

  4. Re:Unzipping your moms pants by interkin3tic · · Score: 4, Funny

    She did say you were pretty quick.

  5. Comment removed by account_deleted · · Score: 3, Funny

    Comment removed based on user account deletion

  6. Re:My chemistry is old but... by Fwipp · · Score: 5, Insightful

    Yes, but it isn't obvious that it is feasible to do that.

  7. Now for the application by elashish14 · · Score: 5, Insightful

    So now we have a method to bulk-produce graphene; but do we have a way to implement it in devices?

    In any case, this is good. Nanowire diameter shouldn't be that hard to manipulate. The more you can manipulate something in synthesis for functional properties, the better it is for application. Look at doping silicon for example.

    In any case, I wonder what the lifetime of a graphene-based device would be. Molecular compounds aren't always the most stable. That's one of the main reasons that they are being held back from adoption.

    --
    I have left slashdot and am now on Soylent News. FUCK YOU DICE.
    1. Re:Now for the application by plague911 · · Score: 3, Informative

      "So now we have a method to bulk-produce graphene; but do we have a way to implement it in devices? " No, no we don't. They found a RELATIVLY easy way to make carbon nanoribbons from nanotubes. Nanotubes are still incredibly hard to make. âoe90wt% are still priced well below our competition at $150 per gram or $75,000 per KG.â Carbon nanotubes. The third most expensive substance per weight that I know of. (preceded by nanoribbons and than anti matter)

    2. Re:Now for the application by voidphoenix · · Score: 2, Informative

      Californium: $60M/g or $60B/kg
      Wikipedia: Transuranium element

    3. Re:Now for the application by XDirtypunkX · · Score: 3, Funny

      Buying Californium on your Visa card and having the feds turn up, priceless!

  8. What are "ribbens"? by xerxesVII · · Score: 2, Informative

    I rtfa and I saw mention of nanoribbons, but nothing about nanoribbens. Obviously Al doesn't know what he's talking about since he's just making up new words on the fly.

    --
    "We shall grapple with the ineffable, and see if we may not eff it after all." - Douglas Adams
    1. Re:What are "ribbens"? by Alotau · · Score: 5, Funny

      ...he's just making up new words on the fly.

      With all the unzipping going on, making up words on the fly is probably OK in this instance.

  9. A simpler answer by bigsteve@dstc · · Score: 5, Funny
    Picture:

    ... a factory in some third world country, where the workers slit open the nanotubes with very small scissors.

    ... or a factory in some third world country, where very small workers slit open the nanotubes ...

    ... or a very small factory in some third world country ...

    ... or ...

    1. Re:A simpler answer by bitrex · · Score: 4, Funny

      A factory in some third world country, where the workers make scale models of factories.

    2. Re:A simpler answer by Arthur+Grumbine · · Score: 2, Funny

      A factory where nanotubes split workers.

      Location: Soviet Russia

      --
      Now that I think about it, I'm pretty sure everything I just said is completely wrong.
  10. Re:Anyone... by DittoBox · · Score: 5, Funny

    [mage] what should I give sister for unzipping?
    [Kevyn] Um. Ten bucks?
    [mage] no I mean like, WinZip?

    -Bash.org

    --
    Good. Cheap. Fast. Pick Two.
  11. Nanoscale and cosmic rays by microbox · · Score: 3, Interesting

    a material that has shown great promise for use as nanoscale transistors

    Won't a stray cosmic ray cause my cpu to fall over?

    --

    Like all pain, suffering is a signal that something isn't right
  12. Perfect! by FelixNZ · · Score: 3, Funny

    Sounds like just what I need to tie up my nanopresent after wrapping it in nanopaper, covered with nanowhimisicaldecorations!

  13. Re:Anyone... by bitrex · · Score: 4, Funny

    And available in nanosize for your anatomy!

  14. ok, so now what by Goldsmith · · Score: 4, Interesting

    Both these groups have succeeded where many others have tried and failed (even with very similar ideas). It's great work. As the summary suggested though, they've taken one hard to work with material and using a complicated process, made an even harder to work with material. This is great for doing science, as graphene ribbons are a huge pain to make, and this should open up more labs to investigating their properties.

    If we're going to have graphene consumer electronics though, it's going to be based on the wafer-scale CVD manufacturing process developed in Korea and MIT.

    1. Re:ok, so now what by vsage3 · · Score: 2, Interesting

      If we're going to have graphene consumer electronics though, it's going to be based on the wafer-scale CVD manufacturing process developed in Korea and MIT.

      Trust me, CVD synthesis of graphene is in the earliest of early stages. The problem is that neither group (Korea nor MIT) have figured out how to get the graphene off the nickel layer that catalyzes the reaction. There are other ways of making graphene that are much further along, such as epitaxial growth on silicon carbide.

    2. Re:ok, so now what by Goldsmith · · Score: 4, Interesting

      The big benefit of the CVD method is that it's actually easy to remove from the growth wafer. Nickel is easy to dissolve. The first papers on CVD graphene did this and demonstrated pretty good transistors. No one has made ribbons from it yet, but I'm working on that.

  15. Re:Based on those easy-to-make nanotubes...? by ChangelingJane · · Score: 2, Insightful

    Other things that will come "in a few years":

    - Stereo 3D in the home
    - Personalized medicine
    - The end of the economic crisis
    - Flying cars
    - Duke Nukem Forever