Aspects of the present disclosure generally pertain to a magnetic field sensor with flex coupling structures. Aspects of the present disclosure are more specifically directed toward Nanoscale Superconducting Quantum Interference Devices (nanoSQUIDs) with very low white flux noise characteristics can be fashioned into very sensitive magnetic field sensors by using external structures to increase the amount of flux that passes through the nanoSQUID aperture. Aspects of the present disclosure are also directed toward a magnetic flux pickup that can be coupled to a SQUID or nanoSQUID and incorporates an input coil made of a superconducting tape, which may be embodied in an electronic device for sensing magnetic fields, or more specifically an application specific electronic device for sensing a sensed property such as for geophysical sensing or biomedical imaging.
