Comments on: Graphene Might Have a Plastic Cousin http://cleantechnica.com/2012/05/09/acoustic-graphene-analog-created-from-plastic/ Clean Tech News & Views: Solar Energy News. Wind Energy News. EV News. & More. Mon, 29 Dec 2014 19:16:00 +0000 hourly 1 http://wordpress.org/?v=4.0.1 By: Åsmund Ervik http://cleantechnica.com/2012/05/09/acoustic-graphene-analog-created-from-plastic/#comment-120622 Thu, 10 May 2012 14:01:00 +0000 http://cleantechnica.com/?p=37845#comment-120622 Interesting article, but I have one comment: the description of Dirac cones is completely wrong and misleading. These cones do not exist in ordinary space, rather they are cones in the dispersion relation, which is a function of momentum, describing the electronic properties of a material. Imagine making a graph of air resistance on your car as a function of speed, say that it looks like a banana. It would be nonsensical to speak of your car “moving up the banana”, but that is essentially what the article does.

It seems the author must have misunderstood what Belle Dumé was saying in the previous article on Graphyne. To be fair, these concepts require a good background in quantum and mesoscopic physics, so it is understandable that the author has misunderstood them.

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