It is distinguished from its analogues because it is a highly sensitive method that allows you to detect a razor blade, a coin, or even a small pin in the lapel of your jacket. This magnetosensitive sensor system even enables you to see the contours of objects and identify whether it is made of ferrous or non-ferrous metal.
The device is based on a grid of magnetosensitive sensors which were developed (along with the device itself) by specialists of the Research and Production Complex “Technology Center” of the Moscow Institute of Electronic Technology (MIET). As the developers are taking out a patent for the device and the sensors, they do not disclose their design yet. However, the subject matter is explained as follows.
The “heart” of each sensor is a superfine film of iron, nickel and cobalt alloy, 100 angstroem units thick (one hundredth of a micron). The film structure is heterogeneous with microcrystals forming differently oriented domains in it. The film pattern formed by microcrystal strokes is determined by the parameters of the magnetic field (magnetic intensity and direction of lines of force).
If magnetic field intensity changes, the microcrystals' orientation also changes, which affects the electrical resistance of the film. The object's own magnetic field or degree of distortion of the terrestrial magnetic field, is then recorded and measured. Nonferromagnetic metal objects are detected by the weak magnetism emitted using sensors surrounded by a coil of electromagnetic radiation which has a known emissive power and frequency.
The device can distinguish between metal objects by examining the area at a certain distance, for example, 10 centimeters, and filtering out other objects using a central processor. This processor analyzes data and compares it with reference objects. The object is displayed on an LCD display, much like an ordinary metal detector.
Nadezda Markina | alfa
New Insight into Molecular Processes
21.11.2018 | Albert-Ludwigs-Universität Freiburg im Breisgau
Exoplanet stepping stones
21.11.2018 | W. M. Keck Observatory
Innsbruck quantum physicists have constructed a diode for magnetic fields and then tested it in the laboratory. The device, developed by the research groups led by the theorist Oriol Romero-Isart and the experimental physicist Gerhard Kirchmair, could open up a number of new applications.
Electric diodes are essential electronic components that conduct electricity in one direction but prevent conduction in the opposite one. They are found at the...
Max Planck researchers revel the nano-structure of molecular trains and the reason for smooth transport in cellular antennas.
Moving around, sensing the extracellular environment, and signaling to other cells are important for a cell to function properly. Responsible for those tasks...
Researchers at the University of New Hampshire have captured a difficult-to-view singular event involving "magnetic reconnection"--the process by which sparse particles and energy around Earth collide producing a quick but mighty explosion--in the Earth's magnetotail, the magnetic environment that trails behind the planet.
Magnetic reconnection has remained a bit of a mystery to scientists. They know it exists and have documented the effects that the energy explosions can...
Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way.
Cultivating human cells in the Petri dish is not a big challenge today. Producing artificial tissue, however, permeated by fine blood vessels, is a much more...
Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.
In our digital world data security and secure communication are becoming more and more important. Quantum communication is a promising approach to achieve...
19.11.2018 | Event News
09.11.2018 | Event News
06.11.2018 | Event News
21.11.2018 | Life Sciences
21.11.2018 | Power and Electrical Engineering
21.11.2018 | Life Sciences