Slashdot Mirror


Photonic Ink Changes Color On Command

An anonymous reader submits "According to Nature's report : "A new ink changes colour at the flick of a switch." It now named Photonic Ink, or P-Ink. "P-Ink's iridescent colours depend upon a process called diffraction." "To make the colour of the ink tunable" the team led by Geoffrey Ozin "packs a polymer gel between its stacked spheres" which can change size "when it is soaked in solvent and shrinks when it dries". In addition, it "conducts electricity", and "altering the voltage tunes the ink's colour smoothly through the spectrum." more detail also can found on Advanced Materials."

34 comments

  1. FUCK! by Anonymous Coward · · Score: -1, Offtopic

    FUCK FIRST POST! I didn't hit 20 seconds TWICE! I HATE SLASHDOT! NILES HATES SLASHDOT!

    I hate slashdot. Kill it now.

    1. Re:FUCK! by Anonymous Coward · · Score: -1, Offtopic

      well, damn. look at that. a "first post" anyway. Go me.

  2. JAMTDC! by GoRK · · Score: -1, Flamebait

    Ooh, great. Now I can have a technicolor newspaper. Big whoop. Let's see it in pill form: then I will be impressed!!!

    ~GoRK

    (PS: Mods, this is an incredibly deep joke. Please moderate accordingly.)

    1. Re:JAMTDC! by Anonymous Coward · · Score: 0

      (PS: Mods, this is an incredibly deep joke. Please moderate accordingly.)
      JAMTDC! (Score:1, Flamebait)


      Done and done.

    2. Re:JAMTDC! by Anonymous Coward · · Score: 0

      I don't fault you because you're an ass; I fault you because you're a stupid ass.

    3. Re:JAMTDC! by Anonymous Coward · · Score: 0

      if i were a donkey (ass) I, would be insulted by your comparing me to that ??? you cain' map a sense of humor T. Prachett

  3. snowcrash anyone? by darksaber · · Score: 2, Informative

    Anyone else reminded of those jackets in Snowcrash that changed colors? IIRC, the Enforcers had them and a flick of a switch would turn all the lettering on them black to match the rest of the jacket.

  4. Terrified... by breon.halling · · Score: 4, Funny

    I don't know about you, but I personally, I'm terrified as to how the porno industry will make use of this. =)

    --
    "Yeah, well, Dracula called and he's coming over tonight for you and I said okay."
    1. Re:Terrified... by tsa · · Score: 1

      Can you make the material transparent at the flick of a switch?

      --

      -- Cheers!

    2. Re:Terrified... by Anonymous Coward · · Score: -1, Offtopic

      Where did you get that sig? From a crash bandicoot game?

  5. Any color? by Anonymous Coward · · Score: 1, Funny

    Any color, as long as it's P-Ink!

  6. It might be fun... by Simon+Field · · Score: 4, Interesting


    It might be fun to combine this with piezoelectric plastic film and put it in clothing, so it flashes colors as you move.

  7. *** IMPORTANT INFO by Anonymous Coward · · Score: -1, Offtopic

    RECTUM - With a dog in perfect health the anus should be small, close, firm
    and entirely retracted. Should the fundament protrude, or if it presents a
    sensible projection to the touch, the animal's digestion is not good. Should
    the orifice be enlarged the position is worse and it will not be long before
    cracks and ulcers may be detected upon the borders of the opening, these
    being at a later period constantly moistened by an unctuous fetid discharge.
    Should the lips of the orifice be gently pulled aside, the inward section of
    the membrane will show a bright scarlet colour, which is moistened with a
    watery fluid. During health the animal's bowels are never relaxed and the
    straining it employs to expel its faeces is sufficient to suggest the injury
    to which the rectum is exposed. If the body be delicate, bone and other hard
    substances pass through it without affecting the powers of assimilation;
    they become hard and sharp projections when surrounded by, and fixed in, a
    solid mass characteristic of the excrement of the dog. Hence a pointed piece
    of bone, projecting from a firm body, is liable to lacerate the tender and
    soft membrane over which it would have to be propelled. The anus of a dog is
    often as indicative of the general state of the dog's body as is the tongue
    with man.

  8. Another P-Ink by flux4 · · Score: 0, Redundant

    Another "P-Ink" that glows iridescently at the flick of a switch is, of course, cat urine.

  9. Changing colour by Matthias+Wiesmann · · Score: 3, Funny

    This could make funny clothes that change color on demand. Of course, it will also make life very difficult for people who cannot make up their mind: blue, no yell... argh....

    1. Re:Changing colour by potsi · · Score: 1

      Yes, because that wasn't popular 15 years ago.

      Remember "Hyper Color" shirts?

  10. Great Idea... by irn_bru · · Score: 1

    But does it pass the litmus test???

    Actually, imagine the crazy fun you could have with colour changing paper and colour changing ink...

  11. james bond by Anonymous Coward · · Score: 0

    This sounds like something james bond could use - as well has fit his car with rotating number plates, paint the car with ink that means the car can change color at the flick of a switch. Making the car invisible is still cooler though.

    1. Re:james bond by pyrote · · Score: 1

      so how long does it take to figure out that you mount a pinhole cam or 12 on the opposite side and reproduce an image of the area behind the car. not only does that make the car invisible, but it would work for his tux, even the license plate.

      Heck with 'skinning' found in most video games, a genaric car could be made to look a little like a porche or in the bad part of town, a toyota.

      I'd like to see nascar use this to update sponsors on-the-fly as they bail from the tail car to back up the lead car.

      --
      THE WORLD IS GOING TO END!!!! eventually.
  12. Couterfeit Detection by aridhol · · Score: 2, Interesting

    Depending on how difficult/expensive it is to make this stuff, it could be used on money as an anti-counterfeit measure.

    --
    I can't say that I don't give a fuck. I've just run out of fuck to give.
  13. Tattoos by Anonymous Coward · · Score: 4, Interesting

    Imagine tattoos,
    your body's natual electrical charges and static

    animatoos

  14. Simpsons animated tattoos premiere by irenetheno · · Score: 1

    "My name is Ot-to. And I've got anima-toos!"

  15. Oh Great! by Strange+Ranger · · Score: 1


    Coming soon - "How to hook your power supply up to the 'intel inside' sticker.

    --

    Operator, give me the number for 911!
  16. On the spot drug tests, for example? by SolemnDragon · · Score: 2, Interesting
    New meaning to mood rings, for starters. But what i'd like to know is can the colour of the ink be fixed, or linked through an input device (otherwise sealed off from the outside) so that you could have a document that doesn't appear until you enter the right key? could hackable newspapers be next?

    And if it were possible to re-print on the same page, would this mean that newspapers would re-use/recycle themselves? Just plug it into the daily info port, and watch as it reprints itself? It wouldn't be as fun as what i use (The internet for my daily news) but it would be intriguing, and i might go for it just to have a hard copy. On the other hand, it's hard enoguh to keep records as it is- this means there could be documents which cease to exist as soon as you tell them to, no pesky burning involved... hm. I'll have to think about this. When i see colourchange makeup come out, i'm going to scream...

    1. Re:On the spot drug tests, for example? by Webmonger · · Score: 1

      You could combine this with those transparent transistors they just came out with to put the data decryption circuitry onto the surface of the pager.
      That would be pretty well impossible to bypass, since the decryption hardware would BE the message.

      It would also be neat to have a piece of paper that was also a scanner!

  17. Oh great... by DeComposer · · Score: 2, Insightful

    I can just see it now: animated banner ads...

    • ...in magazines.
    What's next? Flash 'animations' in newspapers?
    --


    Karma
    1. Re:Oh great... by Myco · · Score: 1

      That sounds wonderful. At last we'd be able to physically destroy banner ads.

  18. Name collision by babbage · · Score: 1
    Researchers come up with a chemical that can take on any color, and the best name they can come up for it is "P-INK"?

    I think that name is already taken by another color, actually...

    1. Re:Name collision by Myco · · Score: 1

      You'd prefer "phink," perhaps?

  19. Perfect for corporate accounting by Wireless+Joe · · Score: 1

    I can imagine these inks used on quarterly statements. Shareholders get the copy with all the black ink; just don't forget to flip the "red ink" switch when you send it to the IRS.

  20. Total Recall by browrp · · Score: 1

    Reminds me of that scene in Total Recall where the secretary was changing the color of her nails with the tap of a stylus... Yet another office productivity tool ;)

  21. yes but unlike the by Anonymous Coward · · Score: 0

    so-called hyper color changing things which barely worked and then quit after 3 washes, this stuff might actually WORK

  22. Rhymes with E-Ink by Anonymous Coward · · Score: 0

    and they've got funding....

  23. Photonic? by Anonymous Coward · · Score: 0

    I had a nanny who was a photonic once, but she had to be destroyed.