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A Magnetic Wormhole.

Prat-Camps J, Navau C, Sanchez A - Sci Rep (2015)

Bottom Line: Here we construct and experimentally demonstrate a magnetostatic wormhole.Using magnetic metamaterials and metasurfaces, our wormhole transfers the magnetic field from one point in space to another through a path that is magnetically undetectable.Practical applications of the results can be envisaged, including medical techniques based on magnetism.

View Article: PubMed Central - PubMed

Affiliation: Departament de Física, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Catalonia, Spain.

ABSTRACT
Wormholes are fascinating cosmological objects that can connect two distant regions of the universe. Because of their intriguing nature, constructing a wormhole in a lab seems a formidable task. A theoretical proposal by Greenleaf et al. presented a strategy to build a wormhole for electromagnetic waves. Based on metamaterials, it could allow electromagnetic wave propagation between two points in space through an invisible tunnel. However, an actual realization has not been possible until now. Here we construct and experimentally demonstrate a magnetostatic wormhole. Using magnetic metamaterials and metasurfaces, our wormhole transfers the magnetic field from one point in space to another through a path that is magnetically undetectable. We experimentally show that the magnetic field from a source at one end of the wormhole appears at the other end as an isolated magnetic monopolar field, creating the illusion of a magnetic field propagating through a tunnel outside the 3D space. Practical applications of the results can be envisaged, including medical techniques based on magnetism.

No MeSH data available.


Related in: MedlinePlus

Measurements of the horizontal component of magnetic field measured by probe T as a function of distance in (a) linear, and (b) double-logarithmic scales. Field shows a dependence with distance d roughly as ∼1/d1.5, very different from a dipolar dependence ∼1/d3.
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f3: Measurements of the horizontal component of magnetic field measured by probe T as a function of distance in (a) linear, and (b) double-logarithmic scales. Field shows a dependence with distance d roughly as ∼1/d1.5, very different from a dipolar dependence ∼1/d3.

Mentions: Experiments show a clear transmission of magnetic field through the wormhole as well (Fig. 3). The dipolar-like magnetic field created by the feeding coil at one end of the wormhole is transformed at the opposite end into a monopolar-like field. Actually, the spacial dependence of the exiting field tends to ∼1/d1.5, since close to the opening the field resembles that of a disk of monopoles rather than a single one (∼1/d2) . These monopolar magnetic fields are an alternative to those obtained by exotic spin ices29 and other systems30. Our magnetic wormhole thus creates an illusion of a magnetic field coming out of nowhere.


A Magnetic Wormhole.

Prat-Camps J, Navau C, Sanchez A - Sci Rep (2015)

Measurements of the horizontal component of magnetic field measured by probe T as a function of distance in (a) linear, and (b) double-logarithmic scales. Field shows a dependence with distance d roughly as ∼1/d1.5, very different from a dipolar dependence ∼1/d3.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4542659&req=5

f3: Measurements of the horizontal component of magnetic field measured by probe T as a function of distance in (a) linear, and (b) double-logarithmic scales. Field shows a dependence with distance d roughly as ∼1/d1.5, very different from a dipolar dependence ∼1/d3.
Mentions: Experiments show a clear transmission of magnetic field through the wormhole as well (Fig. 3). The dipolar-like magnetic field created by the feeding coil at one end of the wormhole is transformed at the opposite end into a monopolar-like field. Actually, the spacial dependence of the exiting field tends to ∼1/d1.5, since close to the opening the field resembles that of a disk of monopoles rather than a single one (∼1/d2) . These monopolar magnetic fields are an alternative to those obtained by exotic spin ices29 and other systems30. Our magnetic wormhole thus creates an illusion of a magnetic field coming out of nowhere.

Bottom Line: Here we construct and experimentally demonstrate a magnetostatic wormhole.Using magnetic metamaterials and metasurfaces, our wormhole transfers the magnetic field from one point in space to another through a path that is magnetically undetectable.Practical applications of the results can be envisaged, including medical techniques based on magnetism.

View Article: PubMed Central - PubMed

Affiliation: Departament de Física, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Catalonia, Spain.

ABSTRACT
Wormholes are fascinating cosmological objects that can connect two distant regions of the universe. Because of their intriguing nature, constructing a wormhole in a lab seems a formidable task. A theoretical proposal by Greenleaf et al. presented a strategy to build a wormhole for electromagnetic waves. Based on metamaterials, it could allow electromagnetic wave propagation between two points in space through an invisible tunnel. However, an actual realization has not been possible until now. Here we construct and experimentally demonstrate a magnetostatic wormhole. Using magnetic metamaterials and metasurfaces, our wormhole transfers the magnetic field from one point in space to another through a path that is magnetically undetectable. We experimentally show that the magnetic field from a source at one end of the wormhole appears at the other end as an isolated magnetic monopolar field, creating the illusion of a magnetic field propagating through a tunnel outside the 3D space. Practical applications of the results can be envisaged, including medical techniques based on magnetism.

No MeSH data available.


Related in: MedlinePlus