Issues

Although superconductivity at room temperature will always remain a pipedream, temperatures as high as 25–30 K are a realistic possibility and will trigger a technological revolution.

As ultracold becomes easier to maintain, highly sensitive devices based on the Josephson effects may find wider and wider use to measure tiny high‐frequency voltages and magnetic fields.

The macroscopic behavior that we describe as “superfluidity” is traceable to the microscopic, quantum‐mechanical properties of liquid helium.

Stable, reliable and homogeneous fields in the 50–100 kilogauss range are now readily available, thanks to a decade of development on superconducting materials and methods.