There are Physicists from University of Basel who had created the minuscule instrument  can examine a feeble magnetic field. From the center of superconducting quantum interference device, there are two thin layers atomically on the graphene. The researchers had added boron nitride. There are Instruments who possess the applications in the medicine. They used new types of research materials.

The goal is to calculate the very small magnetic fields. The superconducting quantum interference devices have been utilized and they are known as SQUIDs in brief. In the field of medicine, the application utilizes the monitoring of brain or the activity of heart. For instance, the researchers of earth sciences utilize the SQUIDs to find out rock composition. They might examine the groundwater flows. The devices had significant range of application for the applied fields along with the fundamental research.

Professor Christian Schönenberger had led the group of researchers at University of Basel. It has been conducted at the Department of Physics along with Swiss Nanoscience Institute who had success in developing the smallest SQUIDs. The researchers had narrated the achievement in journal of science named Nano Letters.

The SQUID is typical and it includes the superconducting ring who had interrupted in the two points through a thin film having normal conducting. There might be insulating properties. The points have been identified as the weak links. It is quite thin where the electron pairs have been found associated with the superconductivity. They have the capacity to tunnel along that. The nanomaterials are used by the researchers and they are nanotubes, graphene or nanowires. Weak links have been associated with two superconductors.

The configuration of the SQUIDs had the critical current threshold much above where the superconductor is resistance-free. It has turned out to be the conductor having ordinary resistance. There has been critical threshold which has been established by a specific magnetic flux. They have passed across that ring. With the measurement of the critical current accurately, there are researchers who could conclude on the magnetic field strength.

There is a new SQUID and the scientists can find out the lossless supercurrents. The reason of the supercurrents are the topological properties of the materials. They can be distinguished from the materials of non-topological type. It has been valuable for topological insulators research. Schönenberger shared his opinion on that project. The SQUIDs will be utilized in the form of the low-noise amplifiers in the future. They have electrical signals with high-frequency. There has been detection of the local brainwaves. It has been known as magnetoencephalography scientifically. The compact design indicates different devices which could be associated with the series.

The paper had been published in close collaboration with the groups of University of Basel along with University of Budapest. The National Institute for Material Science in Tsukuba in Japan had also taken part in the research.