A similar network of SQUIDs could also help detect the specific magnetic signature of Earthquakes before they strike.
One area already progressing with the help of superconducting technology is high-speed rail travel. Magnetically levitating (Maglev) trains, whereby the carriage is levitated by magnets and has no contact with the track, have already been deployed in Germany, China, Japan and Brazil.
These countries are now looking to develop high temperature superconducting maglev trains which use liquid nitrogen instead of liquid helium to cool the tracks. This is expected to simplify the cooling process, reduce operational costs, offer more stable levitation and allow lighter carriages to be used, according to Motoaki Terai from the Central Japan Railway Company.
Kyeongdal Choi and Woo Seok Kim, from Korea Polytechnic University, explain how high temperature superconducting technologies can be used to effectively store power from wind and solar plants, as the weather dictates how much power can be generated at any one time, unlike non-renewable sources such as coal and oil which have a constant output.
Superconducting cables could also carry an electrical current with no resistance across large distances from the wind and solar power plants to cities and towns. According to Steven Eckroad, from the Electric Power Research Institute, and Adela Marian, from the Institute for Advanced Sustainability Studies, advances in cryogenics, the development of low-cost wires and ac-to-dc current converters will make this technology cost-effective and environmentally friendly.
Professor Shigehiro Nishijima of Osaka University points out the increasing need for clean water for domestic purposes and describes the possibility of using high field magnetic separation systems based on superconducting magnets
|Contact: Michael Bishop|
Institute of Physics