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Nickel in microscopic electronic devices

5 May 2014

In today's world, reduction of electronic devices of different types has become very urgent task. After all, computer equipment, radio equipment and mobile telephony to become every year only more powerful, but the new design direction required to reduce the size of such equipment. Tangible results in this direction is achieved by a group of scientists from Cornell University, which has demonstrated in vitro microscopic electronic device, with dimensions of less than one nanometer in thickness. After numerous tests, scientists were able to successfully convert the metal oxide, transition to the insulating materials, by reducing the original size of the sample to a thickness of less than 1 nanometer. The test specimen was made from a particularly thin nickel compound. In order to obtain the starting material as microscopic size, at the level of a few special technology atom exact growth it was used, called molecular beam epitaxy. In the course of physics experiment noticed a surprising regularity, that with such a strong decrease in the size of the material — the original source, it becomes pronounced dielectric properties. However, after a complete transformation of the conductivity of the material is lost, making the return journey to the electrons is closed through the material. Such a unique property can be used in the manufacture of very thin transistor elements or different switches. Also, scientists have noted that the initial trajectory and natural links between the electrons in the sample had been destroyed and transformed as desired due to the unique system of integrating a thin nickel film growth. Using innovative technologies research group managed consistently from one atom to another change in the direction of the necessary properties of the test material. By the way, after reducing the thickness of the object to a thickness of less than three dimensions of the nickel atom, electrons joined in a certain way, creating an unusual pattern. The scheme in appearance resembled a board for playing chess. These properties allow you to control the processes occurring in the material on an electronic level, and open up many possibilities of using ultrafine wires in the future.

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