Baked wafer-type magnetic field sensor
American Institute of Standards and Technology (NIST) researchers have invented a low power. Grain size of a chip-type magnetic field sensor. Earth's magnetic field is able to detect changes in the magnetic field 100 millionth Since the electron energy in the magnetic field will produce small changes. therefore, researchers trying to find a new magnetic field detection method reduced space. in August last year successfully developed based on wafer-type atomic clock works. the researchers will be sealed in a transparent box body trace heating rubidium atoms. forming a rubidium atomic vapor. and then to the semiconductor laser light through a rubidium atomic vapor. because the laser light absorption rubidium atoms in the magnetic field will change. it is possible to change the amount of light detected by the battery. new magnetic sensors leverage existing fabrication of microelectronic and micro electromechanical technology. Because MEMS manufacturing technology has matured, so this new magnetic field sensor having a low-cost possibility of new magnetic field sensor is quite sensitive. able to detect buried under the ground 35 meters depth of six inches of needles. its expected commercial applications including precision navigation instruments. medical instrument used in geophysical prospecting and mineral oil. new sensors can be driven with the battery. size of the current one per cent of atomic magnetic field sensors.