Prior to the present levitation was only one step!

08.12.2012

Researchers from Harvard University announced that identified and measured the force that occurs at the molecular level by using a combination of molecules that repel each other.


This process causes mutual ejection molecules maintain their effect in the air, in other words — a levitation effect. Some molecules, raised in the air floats above the base layer of the object, while levitating objects can move relative to each other with virtually no friction.

Professor Federico Capasso of Harvard University, who led the study, speculated that the discovery made by his team, makes it possible to develop a new class of technical devices and gadgets.

The scientist noted that, despite the fact that experts have managed to pick up a nano-objects into the air, to levitate large objects was only one step, as the basic mechanisms and principles for the process of levitation they have already studied.

The discovery was made in the course of work on the creation of miniature sensors for automotive airbags. The scientists were challenged to create nanodevices of the finest metal plates, making up with a way to circumvent the so-called "Casimir effect".

According to the theory of German theoretical physicist Hendrik Casimir, between two uncharged conducting surfaces placed in a vacuum, there is a mutual attraction due to fluctuations of the vacuum due to the constant appearance and disappearance of virtual particles within.

The researchers had to solve a difficult problem: nanodetali automotive sensors should not have been attracted to each other. Earlier, a team of Russian scientists suggested that the "Casimir effect" can be reduced or neutralized by using the right combination of materials to surfaces.

American researchers have used in the experiment and the quartz glass plate tiny gold ball, placed in the liquid with which they are measured by the repulsive force.

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Devices which would create possible by opening scientists can successfully be used in medicine and in other no less important areas.

Presently doing research in the field of levitation and the UK. At the University of Nottingham, for example, the group of Professor Peter King has developed a unique device which is designed on the basis of a powerful electromagnet of a superconducting material, which allows to overcome the Earth's gravity is quite massive objects.

The invention has been tested on materials such as diamond, lead, gold and platinum. In the new method — the use of the magnetic properties of materials.

According to this parameter can be divided into three classes — ferromagnets, para-and diamagnetic. Ferromagnetic materials are magnetic, paramagnetic and diamagnetic — no.

At the same paramagnetic weakly attracted by a magnetic field, diamagnetic — on the contrary, weakly repelled them.

Due to this property diamagnetic they can "fly" in the air (or rather, in a magnetic field). There are laboratory facilities in which light materials take to the skies and soar above the magnetic circuit.

Making levitate denser material can, filling the chamber installation of a ferromagnetic or paramagnetic fluid is attracted to the magnet, while the diamagnetic materials floating on its surface.

Professor Peter King believes that the invention is quite suitable for practical use. Due to the extreme sensitivity of the instrument to the density of the levitating body, it can be used, for example, the successful implementation of sorting minerals.

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