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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 12 — Jun. 17, 2013
  • pp: 14918–14925

Experimental demonstration of metamaterial “multiverse” in a ferrofluid

Igor I. Smolyaninov, Bradley Yost, Evan Bates, and Vera N. Smolyaninova  »View Author Affiliations


Optics Express, Vol. 21, Issue 12, pp. 14918-14925 (2013)
http://dx.doi.org/10.1364/OE.21.014918


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Abstract

Extraordinary light rays propagating inside a hyperbolic metamaterial look similar to particle world lines in a 2 + 1 dimensional Minkowski spacetime. Magnetic nanoparticles in a ferrofluid are known to form nanocolumns aligned along the magnetic field, so that a hyperbolic metamaterial may be formed at large enough nanoparticle concentration nH. Here we investigate optical properties of such a metamaterial just below nH. While on average such a metamaterial is elliptical, thermal fluctuations of nanoparticle concentration lead to transient formation of hyperbolic regions (3D Minkowski spacetimes) inside this metamaterial. Thus, thermal fluctuations in a ferrofluid look similar to creation and disappearance of individual Minkowski spacetimes (universes) in the cosmological multiverse. This theoretical picture is supported by experimental measurements of polarization-dependent optical transmission of a cobalt based ferrofluid at 1500 nm.

© 2013 OSA

OCIS Codes
(160.3918) Materials : Metamaterials
(160.4236) Materials : Nanomaterials

ToC Category:
Metamaterials

History
Original Manuscript: February 4, 2013
Revised Manuscript: April 8, 2013
Manuscript Accepted: April 12, 2013
Published: June 17, 2013

Virtual Issues
Hyperbolic Metamaterials (2013) Optics Express

Citation
Igor I. Smolyaninov, Bradley Yost, Evan Bates, and Vera N. Smolyaninova, "Experimental demonstration of metamaterial “multiverse” in a ferrofluid," Opt. Express 21, 14918-14925 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-12-14918


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References

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