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Computer Chips Made of Wood Promise Greener Electronics

alphadogg writes: Researchers in the U.S. and China have developed semiconductor chips that are almost entirely made out of a wood-derived material. In addition to being biodegradable, the cost of production is much less than conventional semiconductors. According to the NetworkWorld report: "The researchers used a cellulose material for the substrate of the chip, which is the part that supports the active semiconductor layer. Taken from cellulose, a naturally abundant substance used to make paper, cellulose nanofibril (CNF) is a flexible, transparent and sturdy material with suitable electrical properties. That makes CNF better than alternative chip designs using natural materials such as paper and silk, they argue in a paper published in the journal Nature Communications."

27 of 128 comments (clear)

  1. HCF joke in 3...2...1... by willworkforbeer · · Score: 5, Funny

    And it specializes in Bamboolean operations...

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    1. Re:HCF joke in 3...2...1... by Dunbal · · Score: 3, Funny

      Problem is all the answers will be in board-feet.

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    2. Re:HCF joke in 3...2...1... by sjames · · Score: 2

      Will Apples be made of wormwood?

      I'm sorry Mr. Johnson, your computer has termites.

  2. Stupid by BitZtream · · Score: 5, Insightful

    So they replace the substrate with wood ... instead of silica ... the argument being that wood is plentiful and biodegradable and biologically safe ...

    Except ... Silica is more plentiful and more biologically safe since its essentially biologically inert.

    As an advantage, silica is NOT biodegradable, because I want my chips to last, not fall apart over the winter when it sheds its leaves.

    Silica is NOT the issue for the environment in CPUs, its the production materials and doping agents that are horrible on living things and hard to dispose of.

    So congrats ... you solved a problem ... wait, no, you didn't really do anything productive. Not seeing any redeeming quality about a chip produced this way and seeing plenty of down sides.

    Whats next, you're going to try and convince me that the aircraft carrier made of sawdust and ice they tried to construct during WWII really was a brilliant plant for a warship sailing in the south pacific?

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    1. Re:Stupid by tyme · · Score: 5, Interesting

      Except that this substrate is not being used for Si based semiconductors, but for GaAs instead. Also, using the wood-based substrate means that you can use 99% less of the semiconductor material (GaAs which is rarer than Si, and also poisonous). This will make specific classes of electronic devices (specifically radio and microwave frequency devices) much cheaper, and much less hazardous to dispose of, which is a big win.

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    2. Re:Stupid by x0ra · · Score: 2

      don't be so hasty, hipsters and lumbersexuals need to promote something they understand, ie. not heavy chemistry.

    3. Re:Stupid by BitZtream · · Score: 2

      ... CPUs are small enough that they don't need to be flexable, the CPU is not that big hunk of a thing you pull out of the socket, thats the package, and it has to be big and string to hold all those pins or balls in the right place under the pressure of the lock on the socket. The CPU is a little chip inside of there with wires connected to it so small that you can't see them without good vision or assistance.

      Also, silica doesn't require or create toxic chemicals by working with it, had you bothered to read my statement, you'd see that its the doping agents that make the silica actually do something other than not conduct electricity that come with all the toxic effects.

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    4. Re:Stupid by l0n3s0m3phr34k · · Score: 3, Interesting

      Henp fibers have been shown to work far better than just wood. And as your boat melts you can smoke it...

    5. Re:Stupid by FoxMcElroy · · Score: 2

      Here, I'll quote 1/6th of the article: In a conventional chip, the support substrate is made of the same material as the active layer, but in the CNF chip, only the active layer is semiconductor material, Zhenqiang “Jack” Ma, a UW-Madison electrical and computer engineering professor who led the team, said via email. “If commercializing the wooden chips, tremendous material cost will be saved,” Ma said. “We actually reduced the use of semiconductor material by 99.9 percent.”

    6. Re:Stupid by jandersen · · Score: 2

      Except that this substrate is not being used for Si based semiconductors, but for GaAs instead

      Apart from that, there is the whole, emerging, organic and printable semiconductor industry:

      http://www2.physics.ox.ac.uk/r...
      http://www.fastcompany.com/114...

      These things are not necessarily meant for servers or even consumer electronics as we know it; there is a huge number of things that different industries are interested in using computer technology for, where things like price, flexibility and low power consumption are crucial factors. Just imagine if it were possible to print something like thousands of largely autonomous computers on stickers for, say, $.01 each; I think this may very well be possible quite soon. In that situation, you want electronics that are bio-degradable.

  3. Great news! by quenda · · Score: 3, Funny

    since global ore reserves of current substrates such as silicon and aluminum dioxide are rare and almost depleted.

    Another advantage of cellulose based wafers is that using traditional Japanese technology, they can be made even smaller, and in pretty shapes like swans.

    1. Re:Great news! by ShanghaiBill · · Score: 3, Insightful

      since global ore reserves of current substrates such as silicon and aluminum dioxide are rare and almost depleted.

      Indeed. Silicon is already down to only 30% of the earth's crust, and aluminum has dwindled to only 8%. We are down to our last few peta-tonnes.

  4. Got any marshmallows? by phrackthat · · Score: 2

    Next time they tell you that you'll set your computer on fire if you overclock, you better believe them.

  5. Red Green would be proud. by jpellino · · Score: 2

    Now if they can just replace solder and thermal paste with duct tape and concrete patch....

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  6. Re:Computers Kill Trees by manu0601 · · Score: 2

    Paper-production is actually pushing humans to plant more trees, and that trees act as carbon sinks. Killing a tree is not a huge problem since you immediatly replace it

  7. Re:Computers Kill Trees by x0ra · · Score: 3

    Not so true. Not only trees have a limit in the amount of carbon they can sink, but if you cut a 100years old tree, and replant it, the new trees is not gonna sink as much carbon as the previous tree.

  8. Re:Computers Kill Trees by x0ra · · Score: 4, Informative

    Some research on the subject... https://ec.europa.eu/jrc/en/ne...

  9. Re:Computers Kill Trees by Dunbal · · Score: 3, Informative

    Not actually true. As part owner of a tree farm we've looked into carbon credits, etc. CO2 sequestration is highest in the first few years of growth and then gradually tapers off. You probably get more CO2 sequestered in the first 20 years than the next 80.

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  10. Imagine... by UdoKeir · · Score: 4, Funny

    A Beowulf shrubbery of these!

  11. Re:So... would a foundry based on this tech... by BigPaise · · Score: 2

    And so ... The next Intel chip will be called 'Fargo'.

  12. Oh the puns write themselves by GoodNewsJimDotCom · · Score: 5, Funny

    How can you tell how old your iPhone is? Call it and count the rings.

    Landscapers are becoming in demand because of their ability to provide wood chips.

    Play Nintendogs, now with more bark.

    Search functionality vastly improved for native binary trees.

    1. Re:Oh the puns write themselves by penguinoid · · Score: 2

      Potatoes have cellulose too. I demand potato chips.

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  13. Re:Computers Kill Trees by currently_awake · · Score: 2

    Most tree farms are on poor soil, often on mountainous terrain where you really can't plant valuable crops or food easily. They often make them on land that was just logged, actually.

  14. biodegradeable by Khashishi · · Score: 2

    gives a whole new meaning to the phrase bit rot

  15. Re:Computers Kill Trees by TechyImmigrant · · Score: 4, Informative

    For the highest amount of CO2 sequestration you need the plant matter to fall into an anaerobic bog and slowly sink into the ground as new stuff lands on top. After a few hundred million years, an advanced society then digs it as coal and oil and burns it, dumping all the carbon back into the atmosphere.

    There's a huge amount of stored carbon in the ground. It's only a problem when you burn it. Burn current plant matter and and you're only returning the carbon that came from the air recently, not the carbon that's been saved up for millions of years.

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  16. Re:Computers Kill Trees by drinkypoo · · Score: 2

    Not actually true. As part owner of a tree farm we've looked into carbon credits, etc. CO2 sequestration is highest in the first few years of growth and then gradually tapers off.

    What? This is an outright lie. I just covered this here recently, and the precise opposite is true. Mature trees fix more CO2 than young trees. Mature forest fixes more CO2 than young forest. I first found that this was true for Sequoia Sempervirens, but I dug around and found that this was true for the vast majority of trees. You can read the majority of my comments on this subject in the discussion reakthrough In Artificial Photosynthesis Captures CO2 In Acetate. As I recall, there was another discussion which followed soon after in which I provided additional citations.

    Now, are you telling lies deliberately, or simply repeating lies in ignorance because you were too lazy to go do the research?

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  17. Re:Computers Kill Trees by amias · · Score: 2

    the habitats provided by older trees are much harder to replace.

    these have an effect on wider parts of the environment such as keeping soil in place or supporting other flora and fauna. This can have much wider effects that are very hard to gauge.

    also not all trees have the same effect on the nutrients in the soil around them , replanted trees tend to be the ones that grow fast but do not necessarily compliment their surroundings as much as their predecessors and often deplete them. Most woodlands are a diverse mix of various species of tree which
    came about because thats what worked for the woodland , replacing it with what works for humans or economics is not such a good plan IMHO.

    We have loads of fibres we can reuse if we want to but we dont

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