What is a superconducting wire?
Super contactful material is a material that has no electrical resistance under a very low temperature. The superconducting wire is therefore the length of the wire made of superconducting materials. While most wires are made of flexible metals, some of the best superconductors are fragile, so they must be packed in a powder mold in the tube to be used. The superconducting wire is useful because it allows higher current density than traditional wires. Like other superconductors, however, superconducting wire requires the functioning of very low temperatures and the cooling process can be quite expensive.
High current density is one of the main considerations in the design of the circuit and is very important in designing small integrated chips for portable electronic devices. The current density can be simply described as a density of electric charge flowing through conductive material. Most types of conductors, due to electric resistance, reproach a large amount of heat at a particularly high density. On dThe rule side of the superconducting wire does not have electrical resistance, so release of excess heat is not a problem. However, the superconducting wire can generate the current density levels so high that they generate a magnetic field that can have a harmful effect on superconductivity.
One of the main challenges of successful implementation of superconducting wires is needed extremely low temperatures. Superconducting materials lose superconductivity and begin to have electrical resistance over a certain threshold, so it is essential that the materials are kept below this temperature. Many types of superconducting wire must be maintained at temperatures well below 30 Kelvin (-406 ° F), which requires the use of liquid helium or liquid nitrogen. Some types of superconductors, in a phenomenon known as "high-art-semper superconductivity," can work at temperatures of up to 125 Kelvin (-235 ° F). Cooling such superconducting materials, even though there is still no simple task, Je less expensive than coping with extremely low temperatures that others need.
Unfortunately, it is quite difficult to turn many forms of superconductors, especially high -temperature superconductors, into a superconducting wire. Many high -temperature superconducting materials are quite fragile, so their evolving on typical flexible wires is not credible. It is often necessary to fill the tube in a powder form of superconducting material. In many cases, the powder is closed in some form of metal, heated and compressed into a wide flat wire. Such a superconducting wire lacks the flexibility of traditional wire, but it can still be quite useful.