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      CommentAuthorAngus
    • CommentTimeMar 23rd 2016 edited
     
    Posted By: alsetalokinWe need some good thaumaturgic materials.


    In octarine and purple plaids.
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      CommentAuthorTrim
    • CommentTimeApr 8th 2016
     
    NW

    Posted: Apr 07, 2016
    A new approach to simulating nanoscale heat transfer.

    http://www.nanowerk.com/nanotechnology-news/newsid=43069.php
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      CommentAuthorTrim
    • CommentTimeJun 3rd 2016 edited
     
    NW

    Graphene device could substantially increase the energy efficiency of fossil fuel-powered cars.




    http://www.nanowerk.com/nanotechnology-news/newsid=43552.php
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      CommentAuthorTrim
    • CommentTimeJun 3rd 2016
     
    Does anybody have any idea about the conversion efficiency of the Nano-device, known as a 'ballistic rectifier', is it more than 10%?
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      CommentAuthorjohnq
    • CommentTimeJun 3rd 2016
     
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      CommentAuthorTrim
    • CommentTimeJun 3rd 2016
     
    Thanks but I still want to know how efficient it is, 5 to 20% efficiency has already been obtained, 25 to 30% could power automobiles with a heat source, 40 to 50% efficiency would be handy for turning solar thermal molten salts into electricity at night.
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      CommentAuthorAngus
    • CommentTimeJun 3rd 2016
     
    Posted By: TrimDoes anybody have any idea about the conversion efficiency of the Nano-device, known as a 'ballistic rectifier', is it more than 10%?


    Do you mean a ballistic diode used as a solar cell? Considering how the devices work it's not obvious to me that it would produce a photovoltage at all. Do you have a reference?
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      CommentAuthorTrim
    • CommentTimeJun 4th 2016
     
    Well unfortunately the stories from different technical new sites are all the same, same names but no real meat.

    Heat driven electrons not photovoltaic ones, experimental devices only.

    Without knowing the proposed heat to current conversion efficiency it is hard to get really excited.
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      CommentAuthorDerrickA
    • CommentTimeJun 4th 2016
     
    Posted By: Angus
    Posted By: TrimDoes anybody have any idea about the conversion efficiency of the Nano-device, known as a 'ballistic rectifier', is it more than 10%?


    Do you mean a ballistic diode used as a solar cell? Considering how the devices work it's not obvious to me that it would produce a photovoltage at all. Do you have a reference?


    According to the Abstract in this paper, "potentially at optical frequencies"...
    http://ecee.colorado.edu/~moddel/QEL/Papers/Zhu13a.pdf

    Of course, if "geometric" diodes and "ballistic" diodes operate substantially differently...
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      CommentAuthorTrim
    • CommentTimeJun 4th 2016
     
    Which they should do.
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      CommentAuthorAngus
    • CommentTimeJun 4th 2016
     
    OK. I get it now.
    Yes it is the same device.
    •  
      CommentAuthorTrim
    • CommentTimeJun 4th 2016
     
    Similar.
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      CommentAuthorTrim
    • CommentTimeJun 17th 2016
     
    NW

    Posted: Jun 16, 2016

    A new approach to building efficient thermoelectric nanomaterials.


    http://www.nanowerk.com/nanotechnology-news/newsid=43704.php
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      CommentAuthorTrim
    • CommentTimeSep 18th 2016
     
    NW

    Posted: Sep 16, 2016

    Thermal metamaterial innovation could help bring waste-heat harvesting technology to power plants, factories.

    http://www.nanowerk.com/nanotechnology-news/newsid=44560.php
  1.  
    And you monitor them with thermometamometers, I'll bet.
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      CommentAuthorDuracell
    • CommentTimeSep 18th 2016
     
    Posted By: alsetalokinthermometamometers
    Mievillian! I love it.
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      CommentAuthorTrim
    • CommentTimeOct 5th 2016
     
    Po

    Breaks Casmir limit.

    Thermoelectric silicon material reaches record-low thermal conductivity.

    http://phys.org/news/2016-10-thermoelectric-silicon-material-record-low-thermal.html
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      CommentAuthorTrim
    • CommentTimeOct 21st 2016
     
    NBF


    October 20, 2016

    NASA working on improved thermocouples for spacecraft power and to covert waste heat in car into electricity.

    http://www.nextbigfuture.com/2016/10/nasa-working-on-improved-thermocouples.html
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      CommentAuthorTrim
    • CommentTimeOct 21st 2016
     
    Po

    Andrew has already scooped me on this but as I was so disappointed not to be first, I mislaid where he did.

    Researchers posit way to locally circumvent Second Law of Thermodynamics.

    http://phys.org/news/2016-10-posit-locally-circumvent-law-thermodynamics.html

    Custard pie eating time?
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      CommentAuthorAngus
    • CommentTimeOct 21st 2016
     
    Loschmidt's paradox was pointed out in 1876. Fluctuation theorem has been experimentally tested. So this doesn't sound so radical as all that.