An international team of scientists led by researchers from Barcelona have developed a material which guides and transports a magnetic field from one location to the other, similar to how an optical fibre transports light or a hose transports water.
The magnetic hose designed by the researchers consists of a ferromagnetic cylinder covered by a superconductor material, a surprisingly simple design given the complicated theoretical calculations and numerous lab tests it had to undergo. A 14-centimeter prototype was built, which transports the magnetic field from one extreme to the other with a efficiency of 400% in comparison to current methods used to transport these fields.
Even with the efficiency of the prototype, researchers theoretically demonstrated that the magnetic hose can be even more efficient if the ferromagnetic tube is covered with thin layers of alternating superconductor and ferromagnetic material.
“Until now there was nothing similar with which to guide and transport static magnetic fields...”Àlvar Sánchez, ICREA Academia.
The device designed by the researchers can be implemented at any scale, even at nanometre scale. Thus, a magnetic nanohose capable of individually controlling quantum systems could help to solve some of the current technological problems existing in quantum computing.
Magnetism is a basic element of today's technology, such as in energy generating processes and in the storage of information in computers. And one of the essential processes in these technologies is the conduct and transfer of magnetic fields, either with the use of large transformers or in logic nanodevices.
Light, formed by magnetic and electric field waves, can be very effectively conducted through optical fibres. Nevertheless, “until now there was nothing similar with which to guide and transport static magnetic fields,” explains Àlvar Sánchez, ICREA Academia and leader of the research. “To guide these fields in electronic circuits or in current transformers, ferromagnetic materials such as iron alloys are used, but their intensity quickly drops with the distance and their application is limited.”
This story is reprinted from material from Universitat Autònoma de Barcelona, with editorial changes made by Materials Today. The views expressed in this article do not necessarily represent those of Elsevier. Link to original source.