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If we can make a low-power high Tc superconducting warp/wormhole drive I am sure graphene sheets will be the key substrate.


BTW a point about James Woodward's incorrect argument about background independence being spoiled inside the material.  By the same false reasoning one can argue that special relativity is spoiled inside the material because the speed of light in material is clearly not invariant. Just remember locality demands that (index of refraction)^4G/c^4 is the gravity coupling inside the material because the speed of light in vacuum is from scattering off virtual electron-positron pairs and in a material we also have real particle charges. It's the same thing as far as gravity is concerned because of the equivalence principle. The fact that the universe is accelerating is proof positive that virtual particles inside the vacuum (anti) gravitate equally with real particles outside the vacuum.

 

Electronic properties of a biased graphene bilayer
Eduardo V Castro1,2, K S Novoselov3, S V Morozov3, N M R Peres4, J M B Lopes dos Santos1, Johan Nilsson5, F Guinea2, A K Geim3 and A H Castro Neto5
1 CFP and Departamento de F?sica, Faculdade de Cieˆncias Universidade do Porto, P-4169-007 Porto, Portugal 2 Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, E-28049 Madrid, Spain 3 Department of Physics and Astronomy, University of Manchester, Manchester M13 9PL, UK 4 Centre of Physics and Departamento de F ??sica, Universidade do Minho, P-4710-057 Braga, Portugal 5 Department of Physics, Boston University, 590 Commonwealth Avenue, Boston, MA 02215, USA
Received 26 February 2010 Published 12 April 2010 Online at stacks.iop.org/JPhysCM/22/175503

Abstract
We study, within the tight-binding approximation, the electronic properties of a graphene bilayer in the presence of an external electric field applied perpendicular to the system—a biased bilayer. The effect of the perpendicular electric field is included through a parallel plate capacitor model, with screening correction at the Hartree level.
Begin forwarded message:
From: Graham Douglas Date: October 6, 2010 12:41:27 AM PDT
To: This email address is being protected from spambots. You need JavaScript enabled to view it.
Subject: IOP Publishing: read JPCS and other published papers online today from the Nobel Prize 2010 winners
Reply-To: This email address is being protected from spambots. You need JavaScript enabled to view it.
Dear colleague,
To celebrate the 2010 Nobel Prize for Physics, IOP Publishing is making all the work previously published with us by this year's winners open access until the end of 2010.
The Nobel Prize in Physics 2010 was jointly awarded to:
Professor Andre Geim
Dr Kostya Novoselov
For 'groundbreaking experiments regarding the two-dimensional material graphene'.  Both physicists work at the University of Manchester in the UK.
You can read their work published with IOP Publishing at http://herald.iop.org/npjpcs/m418/zea//link/3935
In addition, Physica Scripta, which is published on behalf of the Physical Societies of the Nordic Countries by IOP Publishing and the Royal Swedish Academy of Sciences, is pleased to announce a new publishing initiative with the Nobel Foundation http://nobelprize.org/.  Physica Scripta will publish copies of the biographies of the 2009 Nobel Prize winners along with their lectures given at the prize ceremony. 
You can read the biographies and lectures given by C K Kao, W S Boyle and G E Smith at the Physica Scripta website: http://herald.iop.org/psnobelpage/m304/zea//link/3937
Best wishes,

Graham Douglas
Publisher
iopscience.org/jpcs
This email address is being protected from spambots. You need JavaScript enabled to view it.
P.S. If you think your colleagues would enjoy reading this special collection, please forward this e-mail to them.

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