That's right. The only way we would be able to build such a thing, by layering graphene sheets over graphene sheets, would just give us graphite - the stuff in a pencil. Most of the technological and physical properties result from the fact that graphene is a single layer of carbon atoms. <div>
<br></div><div>Now, given magic/aliens, we could imagine wrapping up these graphene sheets - into carbon nanotubes - and putting them together into a pencil. But even then, we would see changes in electronic properties. This, by the way, is a<span></span> dream of condensed matter physics -- programmable matter. </div>
<div><br></div><div><span style="font-family:Helvetica;white-space:nowrap"><a href="http://en.wikipedia.org/wiki/Programmable_matter">http://en.wikipedia.org/wiki/Programmable_matter</a></span></div><div><font face="Helvetica"><span style="white-space:nowrap"><br>
</span></font></div><div><font face="Helvetica"><span style="white-space:nowrap">P. <br dir="ltr"></span></font><br>On Saturday, 12 January 2013, rich wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
The media does seem to overblow scientific breakthroughs so-called.<br>
<br>
dumb question: are you saying scaling graphene would essentially<br>
change it into something that isn't graphene anymore or does not have<br>
the same physical properties? sorry, the only chemistry I've learned<br>
in the last decade is from watching Breaking Bad ;)<br>
<br>
rich<br>
<br>
On Thu, Jan 10, 2013 at 8:36 PM, Prashant Kumar<br>
<<a href="javascript:;" onclick="_e(event, 'cvml', 'siva.prashant.kumar@gmail.com')">siva.prashant.kumar@gmail.com</a>> wrote:<br>
> Unfortunately the elephant-pencil thing (in SciAm, right?) thing is somewhat<br>
> specious, in that "graphene" as thick as a pencil is just graphite.<br>
> Alien-tech-level methods of fabricating such a thing notwithstanding,<br>
> scaling up the mechanical properties of graphene in such a way would result<br>
> in changes in physical structure which would nullify the technological<br>
> applications.<br>
><br>
> P.<br>
><br>
> On Friday, 11 January 2013, rich wrote:<br>
>><br>
>> thanks man<br>
>><br>
>> I need a science guy to help me out. I did like the elephant and<br>
>> pencil analogy. guess graphene replacing silicon is many years away.<br>
>><br>
>> rich<br>
>><br>
>> On Wed, Jan 9, 2013 at 9:32 PM, Prashant Kumar<br>
>> <<a href="javascript:;" onclick="_e(event, 'cvml', 'siva.prashant.kumar@gmail.com')">siva.prashant.kumar@gmail.com</a>> wrote:<br>
>> > For those who don't know, graphene is basically a single-atom thick<br>
>> > layer of<br>
>> > graphite with some very interesting physical properties. Basically,<br>
>> > under<br>
>> > certain conditions, you can force the charge carriers, erstwhile<br>
>> > electrons,<br>
>> > to behave as different kinds of particles, which results in a range of<br>
>> > physically and technologically interesting phenomena.<br>
>> ><br>
>> > I would argue that, all things considered, graphene is not bleeding<br>
>> > edge;<br>
>> > more properly emerging. It's not a technology in the sense a layman<br>
>> > would<br>
>> > recognise: it's reasonably far away from commercial application. Problem<br>
>> > is<br>
>> > with fabrication of suitable samples. The guys at Manchester who won the<br>
>> > Nobel in Physics last year used what's now called the "Scotch tape"<br>
>> > method.<br>
>> > You get a sample of graphite and "exfoliate" (read stick it on and then<br>
>> > peel<br>
>> > it off) a layer of graphene. This is one of the most efficient methods<br>
>> > known. However, graphene in this state is brittle, so there's problems<br>
>> > scaling up. Many of the really cool things you can do right now have<br>
>> > also<br>
>> > been demonstrated in other materials.<br>
>> ><br>
>> > Graphene electronics proper is I think maybe a decade or so away. Even<br>
>> > then<br>
>> > I think deployment of graphene will be in concert with other tech, most<br>
>> > exciting of which is perhaps "spintronics". If an electron is spinning<br>
>> > clockwise, it has spin down, anticlockwise, spin up. The idea is you run<br>
>> > circuits using spin information. This allows for very interesting<br>
>> > circuits,<br>
>> > where information can flow both ways along a single line. Cool think<br>
>> > about<br>
>> > graphene here is that it exhibits such effects at room temperature,<br>
>> > where<br>
>> > every other material needs superconducting (~1-2K) temperatures, which<br>
>> > limits commercial utility.<br>
>> ><br>
>> > P.<br>
>> ><br>
>> > On 8 January 2013 07:00, rich <<a href="javascript:;" onclick="_e(event, 'cvml', 'richard.romeo@gmail.com')">richard.romeo@gmail.com</a>> wrote:<br>
>> >><br>
>> >> the "new plastic".<br>
>> >> for those better equipped to explian it would u consider graphene a<br>
>> >> potential bleeding edge technology?<br>
>> ><br>
>> ><br>
</blockquote></div>