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Samsung's New Carbon Nanotube Color E-Paper

Iddo Genuth writes to tell us that Samsung and Unidym have shown the world's first carbon nanotube-based color e-paper. Interestingly, the new film is electrically conductive while remaining almost completely translucent and only 50 nanometers thick. "The company also mentions that the EPD [electrophoretic displays] has important advantages over conventional flat panel displays. EPDs have very low power consumption and bright light readability, which means that even under bright lights or sunlight, the user would be able to view the display clearly. Furthermore, since the device uses the thin CNT films, applications can include e-paper and displays with thin, flexible substrates. Power consumption is lowered due to the EPD's ability to reflect light and therefore able to preserve text or images on the display without frequently refreshing."

21 of 87 comments (clear)

  1. Backlight by overcaffein8d · · Score: 5, Funny

    It conspicuously says nothing about whether you can apply a backlight to it.

    But front-light readability is great for us Slashdotters who go outside and work :)

    --
    Those of us who think they know everything annoy those of us who do.
    1. Re:Backlight by Anonymous Coward · · Score: 5, Funny

      Yes, I'm sure both of you are ecstatic.

    2. Re:Backlight by agendi · · Score: 4, Funny

      but only by the light of the moon! Gotta keep our milky white complexion!

      --
      I just can't be bothered.
    3. Re:Backlight by Jane+Q.+Public · · Score: 4, Informative

      It clearly says that the display is reflective, not transmissive.

  2. obvious use by bmecoli · · Score: 3, Funny

    Awesome, I can now have a convenient way of looking at 100s of galleries of porn when I'm in the bathroom!

  3. completely translucent by agendi · · Score: 2, Interesting

    That might also be nice to use for head up displays in cars.. or even to put over my living room window to change the view :)

    --
    I just can't be bothered.
    1. Re:completely translucent by lysergic.acid · · Score: 2, Interesting

      um, all you did was say how HUDs are currently made. you gave no reason why this wouldn't be a good alternative method of implementing a HUD.

      and reading the Wikipedia article you linked to, it says nothing about using lasers to draw onto the sheet of glass. instead, it states that most HUDs use reflected CRT/LED/LCD-projected monochrome light. using this type of transparent e-paper display would allow full-color HUDs, and would simplify the system by using the e-paper in place of the combiner+projection unit.

      i'm guess you didn't bother to read the article or even the summary. this type of e-paper is translucent:

      The e-paper device jointly completed by Samsung and Unidym uses a carbon nanotube (CNT) transparent electrode developed by Unidym. CNT is a novel material that has extraordinary electrical, thermal, and mechanical properties.[emphasis mine]

      and since it has lower power consumption, better bright light readability, is stronger and also more compact than LCD & LED technology, it would make sense that when the technology matures and lowers in price it could be used in HUDs.

    2. Re:completely translucent by nmg196 · · Score: 2, Informative

      Only if you never want to see where you're going and don't want to look outside again.

      The article says the display is translucent - not transparent. ie, it lets some light through, but you can't see through it - like greaseproof paper, or frosted glass. Pretty useless for making a HUD.

    3. Re:completely translucent by wjsteele · · Score: 2, Informative

      The only problem with using ePaper for a HUD is that you will not get the correct focal length. Normally, HUDs have a complex array of optics to move the image's focal point beyond the front of the car when seen by the the driver.

      Simply applying ePaper to the glass would set the focal point to the windsheld, which is way too close for usability.

      Also, there is the fact that they would also need some form of lighting during the night as ePaper isn't a light source by itself.

      Bill

      --
      It's my Sig and you can't have it. Mine! All Mine!
  4. Re:Colored ePaper is nice and all, but. . . by RuBLed · · Score: 2, Insightful

    yes, to space elevator advertisements

  5. Color E-paper by Ostracus · · Score: 3, Interesting

    "A waterproof MP3 player built for bright beach days is the first device with a color "e-paper" display, meaning it has no backlighting and thus can be read in direct sunlight. The display, from Qualcomm, consists of two layers of a reflective material. Some wavelengths of light bounce off the first layer; some pass through and bounce off the second. Interference between the two beams creates the color, and electrostatic forces control the distance between the layers."

    http://www.technologyreview.com/computing/21561/?a=f

    --
    Shai Schticks:"You don't make peace with friends, you make peace with enemies"
  6. By the light of the moon... by Jane+Q.+Public · · Score: 2, Informative

    Cold-hearted orb, that rules the night,
    removes the colors from our sight.
    Red is gray, and yellow white.
    But we decide which is right.
    And which is an illusion?

    The Moody Blues, Nights in White Satin

  7. Cancerous 'paper' by RudeIota · · Score: 3, Interesting

    Everyone might want to stay away from the paper shredder with these - It will either destroy the blades or make some pretty nasty, toxic dust.

    Might do both. :)

    --
    Fact: Everything I say is fiction.
    1. Re:Cancerous 'paper' by Miseph · · Score: 2, Insightful

      You mean I shouldn't just crush up random things and snort them? What will I do?

      Holy shit dude, that just rocked my world. I don't know how I'll be able to go on knowing that the world isn't made of pixie dust, happy thoughts and unicorn spit... or that if it is, all of those things cause cancer. Guess I'll just have to keep not inhaling, eating, injecting, humping, smoking or otherwise being stupid with everything I come across without regard to the possibility of consequence.

      --
      Try not to take me more seriously than I take myself.
  8. Carbon Nanotubes? by Tim_UWA · · Score: 2, Funny

    I'd be more impressed if they made them out of Copper Nanotubes (CuNT).

  9. Re:Carbon Nanotubes by ScreamingCactus · · Score: 4, Funny

    You're not quite right. We also have a dozen new ways to produce them cheaply, quickly, and efficiently each year, but never see any mass production. Why? I don't know, they never follow up on the almost monthly articles about the newest, cheapest way to produce nanotubes. I would call out a government conspiracy, but I only have the energy to fight 3 or 4 conspiracies at a time. So I'm guessing it's probably just media hype. you know, so we can think the world will become perfect any day now, so we can stop worrying and calm down and accept the government's rule over our lives. You know, cuz it's a big conspiracy. Down with big brother!!!

    --
    The path to enlightenment is truly through homemade drugs!
  10. Re:E-Paper is Pants? by level4 · · Score: 4, Funny

    i hope all british people die.

    You will be delighted to discover that all British people do, in fact, die.

    For the men, you need only wait 76.9 years before death is statistically likely; for the females it's a slightly longer period of eager anticipation: 81.2 years on average before your wish is fulfilled.

    Jolly good show, eh, old boy?

    --
    Let my new 7-digit UID be a lesson to all - write down your passwords.
  11. OT - Open Ink Pot has released by BlackCreek · · Score: 2, Interesting
    On the the topic of E-reading....

    Open ink pot has released the first "free" Linux firmware to run on e-readers:
    http://openinkpot.org/

  12. Why the feeble jokes? by Kupfernigk · · Score: 2, Interesting
    This is actually a real technical breakthrough. The point is that the nanotubes are highly conductive and highly transparent so the display can be made much larger (and thinner)than hitherto. LCDs have quite a thick electrode layer on the front to provide enough conductivity and this is one of the limiting factors. The holy grail of e-paper, the thing to drive widespread usage, is the ability to deliver a full A4 or USL size page, at which point it has a big future in business. For anybody who hasn't noticed, business discussions (as distinct from people sitting around chewing fat on zero-information-content PP slides) usually require participants to wade through long reports, which still need to be printed, and which are then discarded (and have to be shredded...).

    A workable e-reader would have a market here which is initially niche but would then provide the revenue to get to the fully commercialised A4 e-reader - which makes electronic delivery of newspapers and magazines fully practical. The decline in value of internet content is driven by the advertiser-funded model. Paid-for services offering real value would love a locked down e-reader. (and I personally don't mind paying for worthwhile services. By buying a subscription to e.g. Scientific American, I help guarantee its editorial independence and ability to fund articles that would lose certain advertisers.)

    Proof of concept of a workable full page e-reader, during a recession when people are looking for disruptive technologies that may offer a good return? This could easily be the most important thing on Slashdot this week.

    --
    From scarped cliff or quarried stone she cries "A thousand types are gone, I care for nothing, no not one."
  13. Huh? by argStyopa · · Score: 2, Informative

    What the hell does "almost completely translucent" mean? Does "completely translucent" = transparent?

    Isn't 'translucent' merely a descriptor for a state somewhere between transparent and opaque?

    --
    -Styopa
  14. Re:Carbon Nanotubes by ceoyoyo · · Score: 2, Informative

    Uh, carbon nanotubes are used in quite a few common items, like electronics, golf clubs, tennis rackets and mountain bike handlebars.

    What we can't do very easily is manufacture strong materials composed of aligned nanotubes (aka space elevator unobtanium).