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Electrically Conductive Cement

zero_offset writes "The Tokyo Institute of Technology has announced a process for creating an inexpensive, nearly transparent, electrically conductive alumina cement. The conductivity is comparable to metal, and the transparency should be adequate for use in display panels. The process relies upon commonplace and inexpensive metals compared to the rare metals such as iridium currently used in display panels."

159 comments

  1. It's about time! by Robotech_Master · · Score: 3, Funny

    I see they're finally getting around to using that formula Scotty provided.

    --
    Editor Emeritus and Senior Writer, TeleRead.org
    1. Re:It's about time! by InvalidError · · Score: 0, Redundant

      That was my first thought as well.

    2. Re:It's about time! by Robotech_Master · · Score: 2, Funny

      But it was my first post. :)

      --
      Editor Emeritus and Senior Writer, TeleRead.org
    3. Re:It's about time! by Aereus · · Score: 1

      Now we just need them to invent transparisteel and tritanium... ;)

    4. Re:It's about time! by quixote9 · · Score: 2, Interesting

      Be nice if it was just the first step to implementing all that stuff. You know: no poverty, competent government, no wars (except with Klingons and such, of course).

    5. Re:It's about time! by DAtkins · · Score: 4, Insightful

      Not that I'm normally this deep or anything...

      The nice thing about progress is that everything is a small step toward that.

      It's the period between then and now that you have to worry about. Star Trek had 2 more World Wars before Cochrine developed the warp drive. :)

    6. Re:It's about time! by Anonymous Coward · · Score: 0

      "Computer! hello computer!"

    7. Re:It's about time! by Original+Replica · · Score: 4, Insightful

      no wars (except with Klingons and such, of course).

      Nothing brings people together like a common enemy, so for us to have no morewars here on Earth, the most likely catalyst would be war with an alien species. Keep in mind that with that competent government, there was complete global control, and we have only ever seen that government through the eyes of it's military officers.

      --
      We are all just people.
    8. Re:It's about time! by ChaosWeevil · · Score: 2

      Don't forget Trinium, Naqahdah, and Naqahdriah!

    9. Re:It's about time! by Goeland86 · · Score: 1

      what about permacrete?
      I wonder if we'll get any closer to wedge impeller drives for starships, along with Warshawski sails for FTL travel... Who knows what science holds for us in the future...

      --
      ---- I am certain of only one thing : I know nothing else.
    10. Re:It's about time! by JonBuck · · Score: 0, Offtopic

      If they really want to do something new and inventive with Star Trek, they should center around a civilian ship. I'd like to see Starfleet and the Federation Government through the eyes of an entrepreneur. We saw hints of that in a couple episodes that involved cargo ships in Enterprise. There's a huge, untapped potential for storytelling in the Trek universe.

    11. Re:It's about time! by Anonymous Coward · · Score: 0

      * picks up mouse *

      "Helllo, Computer!"

    12. Re:It's about time! by InsertCleverUsername · · Score: 4, Interesting

      Nothing brings people together like a common enemy, so for us to have no more wars here on Earth, the most likely catalyst would be war with an alien species.
      True, but it would have to be a really good hoax. Otherwise it's not likely we'd have a prayer against aggressive aliens. As Sagan and many others would point out, a space-faring civilization is going to be much older and more technologically advanced than us. Reminds me of that old saying, "don't bring a knife to an phaser fight."

      --
      Ask me about my sig!
    13. Re:It's about time! by PresidentEnder · · Score: 1

      Given the number of "Transparent Aluminum omg omg!" articles we've seen in the past, I'm surprised that this (which looks better than any of those before) didn't get the Star Trek treatment, too.

      --
      I used to carry a bottle of whiskey for snake bite. And two snakes. -Nefarious Wheel
    14. Re:It's about time! by zebulonjoad · · Score: 0, Offtopic

      Different universe, I know, but you might want to check out Firefly. They even modeled the Alliance uniforms off the Federation to a degree.

    15. Re:It's about time! by Proofof.+Chaos · · Score: 3, Funny

      Otherwise it's not likely we'd have a prayer against aggressive aliens. As Sagan and many others would point out, a space-faring civilization is going to be much older and more technologically advanced than us. Why do you think we're trying to so hard to find alien life. If aliens find us, they are probably way more advanced; But if we find THEM first, it likely means WE are more advanced than them. Then all we have to do is spread rumors that they insulted Jesus, Mohamed, Buddha, Ghandi, Martin Luther King, Elvis, called all our mamas "nappy headed hos," and that they "Hate Freedom." We will have all humanity united behind our efforts to introduce "Democracy" to the new planet with interstellar ballistic missiles.
    16. Re:It's about time! by arodland · · Score: 1

      Crystoplast / armorplast would be reasonably cool, although really if you think about it it's just another standin for transparent aluminum. Impellers, though, would just rule.

    17. Re:It's about time! by VoidCrow · · Score: 1

      But, yes. That's been a power play for as long as our ancestors have talked, and perhaps even before. A good kill sorts out issues in the pack hierarchy.

    18. Re:It's about time! by Gotta+ask+yourself.. · · Score: 1

      Others have modded you up as funny, but this is serious as hell!

      The more time passes, the more events happen, the more it looks like whatever one can possibly imagine one day will come true.

      Looking forward to flying pigs now.

    19. Re:It's about time! by Robotech_Master · · Score: 1
      --
      Editor Emeritus and Senior Writer, TeleRead.org
    20. Re:It's about time! by FinchWorld · · Score: 1
      True, but it would have to be a really good hoax. Otherwise it's not likely we'd have a prayer against aggressive aliens. As Sagan and many others would point out, a space-faring civilization is going to be much older and more technologically advanced than us. Reminds me of that old saying, "don't bring a knife to an phaser fight."

      No no no, all we need to defend ourselves is a cable repair guy, a laptop and an actor who thinks he has a music career!

      --
      "I may be full of crap about this game, and I may be wrong, and that's fine." -Jack Thompson
    21. Re:It's about time! by deroby · · Score: 1

      Just a big thanks (again) to Wikipedia, didn't have a clue why you guys were raving about a 'rotor inside a tube' =)

      For all the others around here who are about to loose there geek-card too : http://en.wikipedia.org/wiki/Impeller_drive

      --
      If there is one thing to be learned on slashdot, it has to be sarcasm.
    22. Re:It's about time! by Anonymous Coward · · Score: 0

      That's not a knife, that's a spoon!

    23. Re:It's about time! by PatrickThomson · · Score: 1

      I see you've played knifey-spoony before.

      --
      I am one of many. My idea is not unique, nor do I expect my voice alone to sway you. I speak in a chorus of opinion.
    24. Re:It's about time! by jasontn · · Score: 2, Insightful

      ... a really good hoax ... just like Alan Moore's The Watchmen?

    25. Re:It's about time! by indifferent+children · · Score: 2, Funny
      We will have all humanity united behind our efforts to introduce "Democracy" to the new planet with interstellar ballistic missiles.

      Don't worry, the aliens will be so eager for our 'democracy', that they'll welcome us as liberators. They'll be showering our soldiers with flowers. Whole thing should take about six months.

      --
      Censorship is telling a man he can't have a steak just because a baby can't chew it. --Mark Twain
    26. Re:It's about time! by ncc74656 · · Score: 1

      I'd be even more impressed if they managed to invent unobtainium. :-)

      --
      20 January 2017: the End of an Error.
    27. Re:It's about time! by Anonymous Coward · · Score: 0

      You might enjoy the Alan Dean Foster series that begins with "A Call To Arms" where just that happens In it, humans are recruited to participate in an interstellar war-- the premise of the story is that the human race is unusually violent and warlike and therefore worth recuiting despite its low technology.

    28. Re:It's about time! by Anonymous Coward · · Score: 0

      Imagine if we told the people 20+ years ago that instead of plugging electronics into an outlet, you just put it on the wall to charge.

      Or perhaps that you would be provided infinite energy by the walls of your house absorbing sunlight....

    29. Re:It's about time! by mink · · Score: 1

      Thanks for the first good laugh this week.

      --
      Well I've wrestled with reality for thirty five years doctor, and I'm happy to say I finally won out over it.
    30. Re:It's about time! by Convector · · Score: 1

      But space-faring civilizations may not necessarily be more advanced. In "The Road Not Taken" (Harry Turtledove) an aggressive alien civilization comes to Earth seeking to conquer it. However, apart from space travel technology was basically Civil War era stuff (gunpowder weapons) and Earth pwned them. The idea was that once a civilzation discovered the trivial secret to FTL travel, all their developemnt went into that. Earth somehow never discovered this out and so everything else advanced instead: farming, computers, weapons, etc. In this scenario, we could win. Of course it seems implausable that FTL could be achieved with a steam-powered starship, but it made for a cute story.

    31. Re:It's about time! by TheCarp · · Score: 4, Insightful

      heh and for the record, I was laughing just as hard 4 years ago when people said that about Iraq.

      I mean seriously, how do people have their head so deep in the sand that they actually think things like that? Why is modern warfare so poorly understood? (Ok, admittedly the media makes no attempt at all at explaining it)

      Yah, if everyone in iraq were well... a moron. If they hadn't studied a bit, if nobody paid attention to the past 50 fucking years... then yes, their army would have met ours on the battlefield. We would have said "Oh look, a massive troop formation", pressed a button, and the war would be over in 6 weeks.

      They didn't do that cuz anyone with half a brain knows you can't fight like that against an army like the US unless you have an army like...well... like china, or the US. Major air force, major navy, cruise missles, all that good stuff.

      Unless you have an army like the US or china, you just can't fight us like that. You have to play to your own strengths. You hide in civilian clothes, in civilian houses... cuz its what works. History always vindicates the victor. Does it matter whether you are a war criminal or not?

      All I had to do to realise this was a decade or longer conflict.... BEFORE IT STARTED.... was to imagine the US army gets instantly wiped out and china invades the US. Whats gonna happen? Are we going to welcome our liberators?

      No... people will smile by day. And whenever able bodied americans meet, one may say "come to my house, we have a meeting tonight". And guess what... people will come to those meetings... and people will fight. They will fight until either they are gone and new generations have risen up accepting chineese rule... or until the foriegn fighters leave.

      We either stay until the next generation of Iraqi accept us, or we leave them to fight it out to fill the power vaccuume.

      Course, I realise your making fun of the people who thought that but seriously... I find living in a country where people go around not just saying that shit but believing it to be downright embarassing.

      -Steve

      --
      "I opened my eyes, and everything went dark again"
    32. Re:It's about time! by GreyPoopon · · Score: 2, Insightful

      I see they're finally getting around to using that formula Scotty provided.

      It's unfortunate that it has to be produced as a thin membrane in order to be transparent. I think we're all looking for 1-inch thick plates that have the strength of aluminum with the transparency of glass.
      --

      GreyPoopon
      --
      Why is it I can write insightful comments but can't come up with a clever signature?

    33. Re:It's about time! by Impy+the+Impiuos+Imp · · Score: 1

      Forget all that crap -- how about quadra-triti-kaline? (Presumably a wheat bud with three heads of four sub-heads each.)

      Or some o' them sexbots will be fine, too.

      --
      (-1: Post disagrees with my already-settled worldview) is not a valid mod option.
    34. Re:It's about time! by Impy+the+Impiuos+Imp · · Score: 1

      > Of course it seems implausable that FTL could be achieved with a steam-powered starship

      True uberdork pedants will realize that the locomotive time machine at the end of the Back to the Future series was not powered by a Mr. Fusion, but rather by the steam engine itself. Doc Brown had figured out how to reduce the energy needed significantly, to say nothing of using steam to power the lift rockets.

      --
      (-1: Post disagrees with my already-settled worldview) is not a valid mod option.
    35. Re:It's about time! by Impy+the+Impiuos+Imp · · Score: 1

      "A motion-sensor/motion-activated handheld wii controller. How...quaint. (gives disgusted smirk)"

      --
      (-1: Post disagrees with my already-settled worldview) is not a valid mod option.
    36. Re:It's about time! by Grishnakh · · Score: 1

      Perhaps the aliens have already found us. Just read the Book of Ezekiel in the Bible; it seems to describe an alien ship landing.

    37. Re:It's about time! by InsertCleverUsername · · Score: 1

      ... a really good hoax ... just like Alan Moore's The Watchmen?
      Exactly. That's a brilliant, brilliant graphic novel, on par with great literature. I need to give it another read soon, before they ruin it by making it into a movie. Casting would make an interesting non seq. thread... Christopher Walken or Nicolas Cage as Rorschach perhaps?

      --
      Ask me about my sig!
    38. Re:It's about time! by Grishnakh · · Score: 1

      I don't know about this. It's true; different civilizations would probably develop different technologies at different rates. However, if an alien species is 1) advanced enough to develop FTL, and 2) (more importantly) aggressive and warlike, it doesn't seem logical that their weapons technology would not be similarly advanced.

      It would certainly make sense that such a civilization could have (in comparison to us) lesser-developed medical technology, or agriculture, or geological science, etc., since an aggressive, warlike species would probably have little interest in advancing these things, but weapons technology would be one of their main interests.

    39. Re:It's about time! by iamacat · · Score: 1

      Actually dilithium would be the most urgent need. What's the use for all the hull materials if you can not go to warp?

    40. Re:It's about time! by rbunts · · Score: 1

      Your post reminded me of a quote the late historian Shelby Foote repeated about a confederate soldier who when asked by a northern soldier why he was fighting (remember the overwhelming bulk of soldiers in Lee's army etc did not own slaves) responded 'because you're down here'.

  2. This will be great for around my pool by Anonymous Coward · · Score: 0

    Bzzzzt!

  3. Indium, not iridium by Kelson · · Score: 4, Funny

    Hazards of sans-serif fonts at small pitches, I guess.

    1. Re:Indium, not iridium by zero_offset · · Score: 3, Funny

      Actually, hazards of a poor short term memory created by a misspent youth. :)

      --

      Slashdot quality declines as the number of hot grits posts decreases. - Provolt's Law, Apr-09-2005

  4. ut oh by HomelessInLaJolla · · Score: 2, Funny

    Soon there may be some real repercussions when I'm lounging on the concrete wall outside the library and the security guard comes around to say,"Hey! You can't be sleeping here!" *bzzt* OUCH!

    --
    the NPG electrode was replaced with carbon blac
  5. Never mind display panels... by TheSHAD0W · · Score: 3, Funny

    Use it to build RF-proof houses. No more problems with Wifi security!

    1. Re:Never mind display panels... by Anonymous Coward · · Score: 0

      RF-proof houses?

      I want a Faraday castle.

    2. Re:Never mind display panels... by LuxMaker · · Score: 1

      Use it to create pee free zones. This would fix those people who like to urinate in public. One wrong pee and you are zapped good.

      --
      I regret that I only have one mod point to give per post.
    3. Re:Never mind display panels... by _merlin · · Score: 1

      I know it was supposed to be a joke, but your WiFi wouldn't work too well inside the house anyway because of all the multipath interference from reflections (802.11n will help there). And if you wanted to read slashdot on your notebook in the backyard, you'd be totally screwed.

    4. Re:Never mind display panels... by freefrag · · Score: 5, Informative

      Urine streams do not conduct electricity because they separate into droplets.

    5. Re:Never mind display panels... by pimterry · · Score: 1

      Even better, you can now see through your walls! Hunt the pesky kids down!
      (On the other hand, they can see when you're out, and nab all your bandwidth)

    6. Re:Never mind display panels... by Watson+Ladd · · Score: 1

      A sufficiently high voltage could overcome that.

      --
      Inventions have long since reached their limit, and I see no hope for further development.-- Frontinus, 1st cent. AD
    7. Re:Never mind display panels... by mrbcs · · Score: 2, Insightful

      Umm wanna piss on an electric fence to prove that?

      --
      I'm not anti-social, I'm anti-idiot.
    8. Re:Never mind display panels... by freefrag · · Score: 4, Informative

      Yah, Mythbusters busted that one.

    9. Re:Never mind display panels... by loganrapp · · Score: 1
      Just the rebel drops after a few sodas.

      After a night at Howl at the Moon at the Universal City Walk? That's no stream, it's a river!

    10. Re:Never mind display panels... by delvsional · · Score: 1

      tell that to anyone who's ever peed on an electric fence.

      --
      Oh Crap, I'm an optimist.....
    11. Re:Never mind display panels... by deander2 · · Score: 1

      hah. wow. if any comment has ever deserved a +5 informative, this would be it. :-P

    12. Re:Never mind display panels... by 3vi1 · · Score: 1

      Don't believe everything you see on MythBusters. It's obvious those guys never tried peeing on an electric fence.

      Unlike plastic tubing, the real thing is rifled and will produce a stream that conducts electricity.

    13. Re:Never mind display panels... by DanQuixote · · Score: 1


      Really? Where did you get this data from?

      I grew up in an area where the boys KNEW not to piss on the electric fence.

      Some learned the easy way, and some learned the hard way, but we all KNEW IT!

      --
      "We think people rightly feel that once they buy something, it stays bought," --Suw Charman, Open Rights Grp
    14. Re:Never mind display panels... by vecctor · · Score: 1

      That was only true in the mythbusters case because they were peeing on something that was at ground level. Think about a urinal instead of a rail laying on the ground - it is alot closer to where the stream starts, so there is more chance of getting a continous stream contacting the surface before it breaks up.

      Peeing on an electric rail is no problem - but an electric wall? I think that would do it.

      --
      Why, yes I have been touched by His noodly appendage. And I plan to sue.
    15. Re:Never mind display panels... by Impy+the+Impiuos+Imp · · Score: 1

      > Unlike plastic tubing, the real thing is rifled and will
      > produce a stream that conducts electricity.

      Are you calling R. Lee Eremy a liar?!?!?

      "This is my rifle.
      This is my gun.
      This is for fighting.
      This is for fun."

      --
      (-1: Post disagrees with my already-settled worldview) is not a valid mod option.
    16. Re:Never mind display panels... by bkr1_2k · · Score: 1

      You've obviously never pissed on an electric fence. I assure you, urine can and does conduct electricity. And it's not fun!

      --
      "Growing old is inevitable; growing up is optional."
  6. Plexicorp by krnpimpsta · · Score: 2, Informative
    --

    New webcomic updated on Sundays: HERE

    1. Re:Plexicorp by iggymanz · · Score: 1

      except they got the recipe wrong, it wasn't supposed to be conductive, and you wouldn't believe the stink an electrocuted whale makes.

    2. Re:Plexicorp by mrchaotica · · Score: 1

      First of all, Scotty didn't expect Plexicorp to instantly make him a bunch of transparent aluminum; he exchanged the formula for sheets of plain old plexiglas.

      Second, according to Wikipedia (although un-cited), the formula shown was actually that of Lexan, so it wouldn't have been electrically conductive anyway.

      --

      "[Regarding the 'cloud,'] ownership was what made America different than Russia." -- Woz

    3. Re:Plexicorp by Proofof.+Chaos · · Score: 1

      One thing I never understood about that movie. Why did they need a transparent material at all? They weren't trying to turn the ship into an aquarium. All they needed, was to build a tank to hold the water and whales for a couple of hours (at the most) for transport. I think the crew on any modern day naval vessel could do that by simply tearing down a few bulkheads and using a simple welder. Probably be a good idea to build an improvised heater or cooler with a thermostat, too. Whales don't need to be in water anyway (they breath air), all you need is a couple guys with hoses to keep them wet. That's how whales and dolphins are transported today.

    4. Re:Plexicorp by Skater · · Score: 1

      These are all good points, but nobody said Star Trek had to make sense. :)

    5. Re:Plexicorp by iggymanz · · Score: 1

      will shatner says you need to get a life.

    6. Re:Plexicorp by mrchaotica · · Score: 1

      ...claims the guy who has nothing better to do than to criticize strangers on a web forum. How pitiful.

      --

      "[Regarding the 'cloud,'] ownership was what made America different than Russia." -- Woz

    7. Re:Plexicorp by iggymanz · · Score: 1

      sheez, i'm a trekkie too, it was all fun and games but then you got your eye poked out

  7. One step closer... by Drew+McKinney · · Score: 1
  8. Does anybody else remember conductive LEGOs? by Short+Circuit · · Score: 3, Interesting

    Does anybody else remember the conductive LEGOs introduced with the 9V system? It just seems to me that this, if cheap enough, might be useful in construction environments where wire is difficult or impractical to route.

    Depending on its conductivity, it might even be useful for home and industrial high-current applications.

    Granted, electrical wiring is a pretty mature field, but I'm sure that something like this opens up possibilities.

    1. Re:Does anybody else remember conductive LEGOs? by daeg · · Score: 3, Interesting

      One step further: combined with recent advances toward nearly transparent, thin solar cells for covering, well, everything. Windows and sides of buildings would be first, and given enough durability, sidewalks, cars, roofs, and the Chines could all become miniature power plants.

    2. Re:Does anybody else remember conductive LEGOs? by tygt · · Score: 1

      It might just affect your concerns about lightning strikes.

    3. Re:Does anybody else remember conductive LEGOs? by Short+Circuit · · Score: 1

      It could be advantageous. Imagine if all your walls are grounded with a material capable of carrying a high current.

    4. Re:Does anybody else remember conductive LEGOs? by Khashishi · · Score: 1

      When is wire ever impractical to route? Well, I can think of places, but not anywhere where LEGOs would be any easier.

    5. Re:Does anybody else remember conductive LEGOs? by Short+Circuit · · Score: 1

      Not LEGOs, per se, but a conductive setting fluid that can be poured or mixed with existing construction materials. Primarily useful for new construction, sure. But with such a beast, you could have an entire wall serve as a touch-sensitive light switch, or a moisture-detecting OSB/electronic hybrid. (Useful for predicting when a floor's rotting out, or when the roof is leaking again.)

      The conductive LEGOs are relevant because they moved electrical wiring in LEGO structures from unroutable wiring to a hidden mechanism.

    6. Re:Does anybody else remember conductive LEGOs? by mrchaotica · · Score: 4, Informative

      Does anybody else remember the conductive LEGOs introduced with the 9V system?

      Uh, I don't know about yours, but my 9V LEGOs (such as in the monorail) weren't electrically conductive themselves; they just used regular plastic blocks with metal bits embedded in them. For example, see the pictures on this site.

      --

      "[Regarding the 'cloud,'] ownership was what made America different than Russia." -- Woz

    7. Re:Does anybody else remember conductive LEGOs? by Short+Circuit · · Score: 1

      Mine were the same way. I only call them conductive because, within the limits of how LEGOs could be assembled, they may as well have been. (Well, yeah. They had two conductive channels. But still.)

    8. Re:Does anybody else remember conductive LEGOs? by CmdrGravy · · Score: 1

      If you integrate this with one of those 3D printing machines you can print entire houses complete with windows, wiring and walls. All you'd need to add was the plumbing and fittings.

    9. Re:Does anybody else remember conductive LEGOs? by FroMan · · Score: 1

      I still have your legos. You should stop by one of these days and pick them up.

      --
      Norris/Palin 2012
      Fact: We deserve leaders who can kick your ass and field dress your carcass.
    10. Re:Does anybody else remember conductive LEGOs? by Short+Circuit · · Score: 1

      This is true, and I'll have to do.

      Also...Do you have any RPG plans this summer?

    11. Re:Does anybody else remember conductive LEGOs? by chip-to-chip · · Score: 1

      If solar cells were transparent, they wouldn't absorb any photons or generate any electricity.

  9. Just what we need by Atario · · Score: 4, Funny

    A stadium where the entire surface of the building blinks and scrolls ads at you.

    That, or extra-heavy monitors.

    --
    "A great democracy must be progressive or it will soon cease to be a great democracy." --Theodore Roosevelt
  10. Hello computer! by c0d3h4x0r · · Score: 1

    So does this technically qualify as transparent aluminum?

    --
    Moderator hint: a comment is neither "Flamebait" nor "Troll" if it is true.
    1. Re:Hello computer! by Hucko · · Score: 1

      translucent = almost transparent to not opaque

      so, no, technically it would be translucent aluminum

      --
      Semi-automatic amateur armchair Australian philosopher; conjecture ready at any moment...
  11. Tokyo Institute of Technology by Anonymous Coward · · Score: 0, Troll

    I'm sooooo going to TIT

    1. Re:Tokyo Institute of Technology by Anonymous Coward · · Score: 0

      I went to the Western Australian Institute of Technology (WAIT).

      They eventually decided to rename it to be a University, and the most likely name was going to include 'Curtin' (it was eventually renamed 'Curtin University').

      Apparently one of the options put forward for the name was:

      'Curtin University of New Technology'

  12. Indium by nuzak · · Score: 3, Informative

    RTFA, the rare metal in LCDs is Indium, not Iridium.

    --
    Done with slashdot, done with nerds, getting a life.
    1. Re:Indium by Anonymous Coward · · Score: 0

      Yes yes, but Iridium is the Engrish version of Indium.

    2. Re:Indium by treeves · · Score: 1

      and it is about as rare as silver, i.e not all *that* rare - at least not nearly as rare as iridium. Why is it used? Because it can wet glass.

      --
      ...the future crusty old bastards are already drinking the Kool-Aid.
  13. Mafia ... by SimonInOz · · Score: 1

    No, Franco, I said concrete BOOTS, not concrete BOOKS.

    --
    "Cats like plain crisps"
  14. Cement != concrete by jfengel · · Score: 5, Informative

    Cement = anything used to glue things together

    Concrete = a building material composed of aggregates and cement

    Concrete is used for buildings, roads, sidewalks, etc. The aggregate in that case is usually rocks. The cement is usually Portland cement. It's not correct to call it "cement", though people will usually understand what you mean.

    But judging from the comments so far, not in this case. This isn't a replacement for Portland cement, and they're not talking about building materials. This is the kind of cement used to glue bits of LCD screens to each other.

    1. Re:Cement != concrete by Sj0 · · Score: 1

      Ah, I never would have guessed. I saw the article, but didn't read too deeply. Shame, the things you could do with a clear version of portland cement would probably change just about every industry in the world.

      --
      It's been a long time.
    2. Re:Cement != concrete by Anonymous Coward · · Score: 0

      Ya, OK, so it'd be massively expensive to build a house-sized monitor, but I'd still like to see a house made of this!

      neener, neener

    3. Re:Cement != concrete by bill_mcgonigle · · Score: 1

      But judging from the comments so far, not in this case.

      A shame - I would have stereotyped everybody here as having used model cement at least once in high school, for building models or other things.

      Coincidentally, I just learned tonight that the black sludge that gets mixed with sand and aggregate to make asphalt is called 'asphalt cement'.

      --
      My God, it's Full of Source!
      OUTSIDE_IP=$(dig +short my.ip @outsideip.net)
    4. Re:Cement != concrete by lessthan · · Score: 2, Interesting

      Umm... I hunted "alumina cement" down on Wikipedia, which states : Applications - in construction concretes, rapid strength development is achieved, even at low temperatures (truncated for clarity) Is that not the correct entry?

      --
      Space Shuttle was a program that strapped humans to an explosion and tried to stab through the sky with fire and math
    5. Re:Cement != concrete by mrchaotica · · Score: 2, Interesting

      Coincidentally, I just learned tonight that the black sludge that gets mixed with sand and aggregate to make asphalt is called 'asphalt cement'.

      Likewise, the end result after that mixing is properly called "asphalt concrete," not just "asphalt."

      --

      "[Regarding the 'cloud,'] ownership was what made America different than Russia." -- Woz

    6. Re:Cement != concrete by Marty200 · · Score: 1

      Umm... I hunted "alumina cement" down on Wikipedia, which states : Applications - in construction concretes, rapid strength development is achieved, even at low temperatures (truncated for clarity) Is that not the correct entry?

      Cements are used in construction, but you wouldn't make a wall out of them.

      --

      Randomly distributing Karma whenever possible.

    7. Re:Cement != concrete by lessthan · · Score: 1

      Again, I get the feeling that I'm missing something. The entry implies that cement is added to the concrete to endow certain properties. Alumina cement added chemical resistances to concrete, in fact it was invented to offer sulfate resistance. (Yes, I'm pulling that straight from the article) Further research I did, found this which makes direct comparision to Portland cement.

      --
      Space Shuttle was a program that strapped humans to an explosion and tried to stab through the sky with fire and math
    8. Re:Cement != concrete by Proofof.+Chaos · · Score: 2, Informative

      OK, my buck oh five.

      First, the dictionaries suck. American Heritage also gives cement=Portland cement, or even concrete before cement=glue or binder. This is wrong. The use of the word cement to mean Portland cement -used to make concrete- or worse yet concrete itself, is essentially slang. Its like calling network cable "copper," or fiber-optic cable "fiber." Why they give that definition before "A substance that hardens to act as an adhesive; glue," and "Something that serves to bind or unite," I don't understand. For the best explanation, please see Wikipedia: http://en.wikipedia.org/wiki/Cement

      Please people, stop telling people you have a "cement" sidewalk and an "asphalt" driveway (or worse yet, tar). You have a "concrete" sidewalk, and a "blacktop" driveway (or "asphalt cement" if you want to get really technical).

      Now, after rereading the article, I see that they say "lime-alumina" cement, which sounds like Portland cement to me, but then they say aluminum is used as a substitute for indium, which, AFAIK, is not used in Portland cement. So, I don't know WTF to think they mean.

    9. Re:Cement != concrete by neersign · · Score: 1

      you could also describe cement as "that stuff you put in a plastic bag and huff." It seems as if more people would understand that.

    10. Re:Cement != concrete by Ex-MislTech · · Score: 1

      Portland Cement is like mortar, which is used between bricks.

      --
      google "32 trillion offshore needs IRS attention"
    11. Re:Cement != concrete by coopex · · Score: 1

      There already is translucent concrete. It's quite pretty looking, however it's 5x as expensive as normal concrete right now. Here are some more pictures of a similar product.

      --
      The road to hell is paved with good intentions.
    12. Re:Cement != concrete by lessthan · · Score: 1

      LOL, so you would build a wall with it!! K, thanks for the clarification, sometimes I'm just dense.

      --
      Space Shuttle was a program that strapped humans to an explosion and tried to stab through the sky with fire and math
  15. Editors? Anyone? by eskwayrd · · Score: 3, Insightful

    The conductivity is comparable to metal

    'metal' is pretty generic, and 'metals' conduct at varying levels (understatement). TFA actually states 'manganese'. Why distort the original posting in the summary?

    ...compared to the rare metals such as iridium

    WTF? TFA states 'indium'.

    Methinks the poster should rely on the copy/paste strategy more often than 'transcribe it manually'.

    Anyway, cool stuff. Anyone know enough about display panel construction to give an off-the-cuff estimate of whether this new stuff will take more energy to produce?

    --
    eskwayrd = m^2c^4
    1. Re:Editors? Anyone? by Anonymous Coward · · Score: 0

      The conductivity is comparable to metal

      Why wouldn't it be? The conductivity of PVC is also comparable to that of metal. The question is how well it fares in that comparison...

  16. Let's see, here... by greenguy · · Score: 0, Troll

    1. Find a way to use this stuff to make computer chips, as well as monitors.
    2. Start using 3D printers to make them. Suddenly, hardware is open source.
    3. ???
    4. Profit!

    --
    What if I do the same thing, and I do get different results?
    1. Re:Let's see, here... by fabs64 · · Score: 2, Interesting

      actually that sounds like a pretty brilliant way of printing simple "wires" on things.

  17. So if my house was made of this stuff I... by exp(pi*sqrt(163)) · · Score: 1

    ...wouldn't have to strap myself to a pipe with a wire whenever I decided to work with CMOS components. Sounds pretty useful.

    --
    Doesn't it make you feel good to know that our freedoms are protected by politicans, lawyers and journalists.
    1. Re:So if my house was made of this stuff I... by WeblionX · · Score: 1

      You just have to stop rolling around on the carpet before hand and you'll be fine.

      --
      (\(\
      (=_=) Bani!
      (")")
  18. Home circuit fabs? by Teancum · · Score: 4, Informative

    When I read this, I was thinking of Fab@Home with the idea that perhaps you could use this process to help build crude home-built ICs out of simple and cheap materials.

    Unfortunately, it seems as though the process is a bit more complicated, and I don't know how you can get a nozzle heated to 1100 degrees C in a reduced oxygen environment (presumably why it is in a sealed glass tube to work) that would also be something you would want on your kitchen table.

    While of interest to a materials science guy, this really isn't that spectacular of a deal here. It does have the potential of improving LCD screen luminance values, reducing power requirements for laptops (the screen sucks quite a bit of power in the overall system), and helping in other ways. But it isn't something that simply can be poured out of a nozzle.

    1. Re:Home circuit fabs? by Anonymous Coward · · Score: 0

      > When I read this, I was thinking of Fab@Home with the idea that perhaps you could use this process to help build crude home-built ICs out of simple and cheap materials.

      Cheap, like pure crystal silicon? :)

    2. Re:Home circuit fabs? by Teancum · · Score: 1

      When I read this, I was thinking of Fab@Home with the idea that perhaps you could use this process to help build crude home-built ICs out of simple and cheap materials.

      Cheap, like pure crystal silicon? :)


      How cheap is pure silicon? That is hardly something that you can grow with a home fab.

      Try to build your own chips with a bucket sand from a local beach, or from a quartz outcropping.

      I promise that you will not succeed on the budget of a typical middle-class 1st world family.

      As far as why I thought this might have been something worth looking at, you could do the equivalent of gate building if you could have a "pourable" conductor that could be layered with an insulator in a matrix. If you build a transistor with those materials, and perhaps a simple capacitor, you have complete chips. Sure, they may be very crude and single gate chips, but it is a place to start and perhaps refine the process. You won't get to VLSI chips doing this, but some fairly simple stuff and even perhaps a processor like a 4004 chip might be possible with very advanced jets pouring something like this down in a substrate.
    3. Re:Home circuit fabs? by smellsofbikes · · Score: 1

      In case you should ever want to do such things: put the nozzle in a mostly sealed environment -- let's say a thermos -- with wires running in. Use resistive heating elements to crank it up to heat (there are resistive elements designed to operate submerged in molten glass, way worse conditions than this) and drop some dry ice in there. The heat will melt the dry ice (even faster than it's already subliming) which will displace the oxygen. Since it's considerably heavier than oxygen, it'll tend to stay in the thermos. It's fairly easy to make high-temp low-oxygen environment cheaply, depending on how 'low-oxygen' your demands are. I've built sintering furnaces that work well at similar temps, although I generally pipe a little bit of argon in to displace oxygen rather than using dry ice.

      --
      Nostalgia's not what it used to be.
    4. Re:Home circuit fabs? by termigan · · Score: 1

      I think it's still OK. The 1100 degrees is the creation of the cement, and we won't need a fab that can build its own raw materials, it just has to use pre-prepared materials that can be laid down a bit at a time. They don't mention the cement application environment, but it's going to be much better than 1100 degrees.

      --

      Today is all we really have. We should all live it well: it is our stepping stone to all of our tomorrows.

    5. Re:Home circuit fabs? by Teancum · · Score: 1

      One cool aspect of something like this is that you could in theory build 3-D chip instead of sticking with the normal 2-D masks (plus a couple of layers). That is a goal in silicon labs/fabs, but somehow it never really is accomplished. That gives you other kinds of problems too in terms of heat dissipation and other problems, but it would be certainly cool to have a home fab be able to make some of the basic 7400 series logic chip. A discrete NAND gate would be very exciting.

  19. I wish... by Anonymous Coward · · Score: 0

    I had one of their sweatshirts. I remember seeing a visiting group of engineering professors from the university walking around with "TIT" written proudly on their shirts.

  20. Environmetally-friendly? by Velocir · · Score: 4, Insightful

    From TFA: "the cement would make an environmentally-friendly alternative because its ingredients are more readily available". That doesn't make it environmentally friendly, it just makes it less environmentally damaging. There's a BIG difference.

    Also, is 30kg grip strength pretty low for an adult male? I'm pretty sure it is...

    1. Re:Environmetally-friendly? by 644bd346996 · · Score: 1

      I'm not sure how 30kg compares to what the average adult can do, but any decent rock climber can do a lot more than that. I've known quite a few people who can do things like one-fingered pull-ups on a campus board, something most slashdotters can only dream about.

    2. Re:Environmetally-friendly? by Chris+Pimlott · · Score: 2, Interesting

      A more abundant material will occur naturally in greater concentrations, which reduces the amount of effort to retrieve and process a high-grade sample. For example, in an area where gold is plentiful, you may be able to find a large quantities of gold just by hand-panning in a stream. In an area where good is scare, you may have to sift through entire mountains to extract the same amount. The latter takes much more energy and investiment and has a much higher toll on the environment than the former.

    3. Re:Environmetally-friendly? by khallow · · Score: 1

      The usual definition of "environmentally friendly" is whatever the marketer intends it to mean.

    4. Re:Environmetally-friendly? by Velocir · · Score: 1

      Exactly.

    5. Re:Environmetally-friendly? by bkr1_2k · · Score: 1

      All right, I'll take the bait. Define "decent rock climber" and what does campus boarding have to do with decent climbing? I'll grant you that building strength is good for climbers, but most of the climbers I know have never once used a campus board and they've been climbing (at various different ranges of difficulty) for many years. 1 fingered pullups are for the movies and essentially useless in 99.8% of outdoor climbing in the world.

      I'm going to assume you mean indoor gym "climbers" and sport climbers, which typically need more grip strength than the folks I climb with... who are primarily mountaineers and trad climbers.

      --
      "Growing old is inevitable; growing up is optional."
    6. Re:Environmetally-friendly? by Kopretinka · · Score: 1

      You say "environmentally-friendly" is not the same as "less environmentally damaging".

      Well, remember that middle-school bully, when he didn't hit you and instead just said "jerk off"? Well, that seemed almost friendly, didn't it? 8-)

      --
      Yesterday was the time to do it right. Are we having a REVOLUTION yet?
  21. real purpose by digitalderbs · · Score: 3, Funny

    What they won't tell you is that it was really developed as a deterent to public urination in the streets.

    1. Re:real purpose by iggymanz · · Score: 1

      actually, the tingle is quite titillating.

  22. And just when thought....... by edwardpickman · · Score: 3, Funny

    Las Vegas couldn't get more annoying. Everywhere from sidewalks to bathrooms blaring logos at you. Even worse would be the saturation subliminal advetising. "No really honey, the floors and walls told me to gamble more".

    1. Re:And just when thought....... by smithmc · · Score: 1

      [whispers] ...Miranda!

      --
      Downmodding is the refuge of the weak. Don't downmod, make a better argument!
  23. keep you eyes on the road. by Original+Replica · · Score: 2, Interesting

    It could have some interesting applications as a road surface. traffic alerts and stop lights being part of the road itself.

    --
    We are all just people.
    1. Re:keep you eyes on the road. by veganboyjosh · · Score: 1

      i've been singing the praises of a solar-panel-as-roadway for several years now. nowhere in print, of course, except i think in several /. posts. this is a step in that direction...

    2. Re:keep you eyes on the road. by DerekLyons · · Score: 1

      It could have some interesting applications as a road surface. traffic alerts and stop lights being part of the road itself.

      Where they would be frequently covered up by other cars, dirt, dust, snow, etc... Not to mention that keeping your eyes (litterally) 'on the road' is a bad thing as it disrupts your scan pattern and may cause you to miss other cars misbehaving. (The phrase 'keep your eyes on the road' isn't meant to be taken literally - it's the driving equivalent of 'keep your head in the game'.)
  24. Are we ready for our broadband over cement? by LuxMaker · · Score: 1

    Will it turn out like broadband over powerlines?

    --
    I regret that I only have one mod point to give per post.
  25. cheaper tvs? by Anonymous Coward · · Score: 2, Interesting

    Forgive my ignorance, but most of the comments only refer to large/heavy structures using this material. But, the article seems like it's saying that this could be used to replace Indium in televisions. Can this not possibly lead to cheaper and more efficient televisions or am I missing something? Can this also not be useful in making cheaper displays in general?

    1. Re:cheaper tvs? by Teancum · · Score: 2, Informative

      I guess many of those posting havn't heard about Rubber cement, commonly used for building model vehicle kits. Or other kinds of cement like the solvent used in PVC pipes.

      While making it cheaper may be true, the big problem that happens with displays is that you have wires which cross between pixels on any display.... simply to turn the pixel "on" or "off". These can be quite thin and are made of several different kinds of materials, but they do get into the way of the display. By making these wires transparent, you would have a huge increase in the throughput of the light coming from something like a back-lit light source (common for laptops).

      As far as replacing Indium or other rare earth metals... I don't understand that at all. Those metals are used to floresce in a CRT (television picture tube) and produce color pixels. This is what makes the TV be in bright colors. This article on color televsion gets into some of the specific color properites of Indium compounds and how they enhance the color gamut that can faithfully reproduce color from electronic media. This cement is not going to have those same kind of properties.

    2. Re:cheaper tvs? by Adambomb · · Score: 1

      What you're saying really IS the purpose of this material, those who are confusing you took the usual rtfa-less slashdot tangent and ran with it.

      --
      Ice Cream has no bones.
    3. Re:cheaper tvs? by glesga_kiss · · Score: 2, Informative

      As far as replacing Indium or other rare earth metals... I don't understand that at all.

      I believe the main benefit is the cost of Indium and similar substances.

      specific color properites of Indium compounds and how they enhance the color gamut

      This substance isn't intended to be part of the light emitting (or blocking) part of a display. It's for the wiring to those parts, built into the screen. By making it more transparent, the light level required can be reduced which saves battery life in laptops and possibly the cost of the light components.

    4. Re:cheaper tvs? by Teancum · · Score: 2, Informative

      I highly doubt that the value of the 2 grams of Indium used for a display is going to be a major factor in the overall cost of the display. You could use Gold or even Iridium and it wouldn't even be a factor. Californium, perhaps, but that element is sold by the gram. I just don't buy that as a serious argument.

      Trust me when I say that it is the use of Indium compounds and their phosphorescence at bold primary colors that makes it so valuable, and is driving up the world market price of Indium. Compared to Gold, Indium is a lousy conductor. A Gold or Silver trace would be much easier to hide because you would not have to use as much material. The use of Indium as a wire is not the issue, although the amount of the Indium compounds could be reduced slightly in a matrix of this cement and other composite materials used in a display system. That would be something that would appeal to a CEO or bean counter that is really concerned about the expense of getting Indium on the world metals market, but the concern would be about simply getting bulk Indium in the first place.

  26. Sopranos by Anonymous Coward · · Score: 0

    Fangulo... we can't use concrete for body disposal anymore.
    But we can for some cool electricuting.

  27. alarm application by steve426f · · Score: 1

    Using this for your outside walls in combination with a high-voltage alarm system should be more effective than a siren!

  28. Mistakes in the article! by dr.+loser · · Score: 4, Informative

    The author of the actual paper is Hideo Hosono, not "Hideo Hono". The paper, available here, was not published in the April 11 issue of Nano Letters. Rather, it was published on-line on March 22.

    1. Re:Mistakes in the article! by Anonymous Coward · · Score: 0

      Hono? Hosono? I say SO what!

  29. Re:Tokyo Institute of Technology: TiTech by abushga · · Score: 3, Informative

    The acronym is TiTech. These kids design pico-satellites and put them into low earth orbit, among other things.

  30. Now we just need to make toilets from this... by Anonymous Coward · · Score: 0

    Last I knew, it would help with the transmission of Google TiSP.

  31. I just love that place by nanosquid · · Score: 1

    The Tokyo Institute of Technology, Japanese equivalent of the Massachusetts Institute of Technology (MIT)...

    1. Re:I just love that place by Anonymous Coward · · Score: 0

      Tokyo Institute of Technology... equivalent to MIT.... Glad you love the place but I have to say I'm more of a legs man myself

    2. Re:I just love that place by Stanistani · · Score: 1

      I just want to buy the T-shirt...

  32. ObRenAndStimpy by Anonymous Coward · · Score: 0
  33. Uhm... Old News? by Wandering+Wombat · · Score: 2, Informative

    I did a college engineering report on this... in 2004.

    --
    I like to place meaningful quotes in my sig, so people will know that I know what meaningful quotes are.
  34. Re:I believe urban legends in spite of proof. by Anonymous Coward · · Score: 0

    Yeah, like my cousin's friend's uncle! He peed on a fence and his testicles exploded. True story! Ask 'im!

  35. the poster never visited a cattle farm by swschrad · · Score: 1

    it is axiomatic that guys will always, uh, TEST the electrified wire in a cattle pen.

    and the fence charger will tell them that YES, a urine stream DOES conduct electricity.

    quite ZAP well ZAP in ZAP fact ZAP...

    --
    if this is supposed to be a new economy, how come they still want my old fashioned money?
  36. So how does it compare to solder? by jcr · · Score: 1

    Can I use this as a substitute when building electronics?

    -jcr

    --
    The only title of honor that a tyrant can grant is "Enemy of the State."
  37. Road signs... by bkr1_2k · · Score: 1

    Potholes.

    A pothole in the wrong place could seriously jack up your vision of future roadsigns. I'll take the standard signs we have now, thanks.

    --
    "Growing old is inevitable; growing up is optional."
  38. Described about 60% of America by Original+Replica · · Score: 1

    Yah, if everyone in iraq were well... a moron. If they hadn't studied a bit, if nobody paid attention to the past 50 fucking years

    What? Are you trying to say that things we (the US) did during the Cold War still count? The Cold War is over. Why are all those people still so upset? More importantly, who is Anna Nicole's baby-daddy?

    --
    We are all just people.
  39. [OT] your sig by Mr+Z · · Score: 1

    Who the f*** decided that sentences on the Internet shall no longer be formatted with two spaces after a period?!

    Someone who's never taken a typing class? Annoys me, too.