Titania has promise as superconductor insulator

According to NCSU, superconducting magnets are being investigated for use in next-generation power generating technologies and medical devices.

Regular conductors conduct electricity, but a small fraction of that energy is lost during transmission. Superconductors can handle much higher currents per square centimetre and lose virtually no energy through transmission. However, superconductors only have these desirable properties at low temperatures.

‘Superconducting magnets need electrical insulators to ensure proper operation,’ said Dr. Sasha Ishmael, a postdoctoral researcher at NC State and lead author of a paper describing the work. ‘Changing the current inside the superconductor is important for many applications, but this change generates heat internally. The magnets will operate much more safely if the electrical insulators are able to shed any excess heat. Otherwise, the higher temperatures could destroy the superconductor.

‘This titania-based material is up to 20 times better at conducting heat than comparable electrical insulators,’ Ishmael said in a statement. ‘It has characteristics that are very promising for use as electrical insulators for superconducting technologies.’