Researchers create high temperature super conducting nanowires

5 December 2008

Although researchers are trying to make high temperature super conducting nanowires since long back, researchers at Cal Tech have created a nanowire first of its kind. The feasibility studies of a nanowire made of high critical temperature super conducting material was never studied and the present study was aimed at achieving the confidence in this direction.

High critical temperature materials have the advantage over conventional superconductors as these materials can wok at around the 77 degree Kelvin, which is the boiling point of nitrogen. With the use of commercially available liquid nitrogen, this temperature of about – 320 degree Fahrenheit can easily be achieved in the laboratory.

Heath and his colleague Ke Xu took a copper oxide compound known as YBCO and fabricated a high Tc (high critical temperature) nanowire. From the FBCO strips, arrays of up to 400 nanowires were created and after joining these wires by metal strip perpendicularly the electrical properties of these were measured at different temperature range.

Researchers found that the although the wires exhibit similar phenomenon of super conducting transition above liquid nitrogen temperature, however the transition varies with the width of the nanowire . A 10 nanometer nanowire became fully super conducting at a temperature of 20 K in comparison to a 15 nanometer wire, which was found fully super conducting at the temperature of 10 K.

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One Response to “Researchers create high temperature super conducting nanowires”

  1. On December 14th, 2008 at 3:02 pm, nanotechnology blog Says:

    I already tried at 3KV and it’s seems work.

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