TITLE

Chip-scale atomic magnetometer

AUTHOR(S)
Schwindt, Peter D. D.; Knappe, Svenja; Shah, Vishal; Hollberg, Leo; Kitching, John; Liew, Li-Anne; Moreland, John
PUB. DATE
December 2004
SOURCE
Applied Physics Letters;12/27/2004, Vol. 85 Issue 26, p6409
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Using the techniques of microelectromechanical systems, we have constructed a small low-power magnetic sensor based on alkali atoms. We use a coherent population trapping resonance to probe the interaction of the atoms’ magnetic moment with a magnetic field, and we detect changes in the magnetic flux density with a sensitivity of 50 pT Hz-1/2 at 10 Hz. The magnetic sensor has a size of 12 mm3 and dissipates 195 mW of power. Further improvements in size, power dissipation, and magnetic field sensitivity are immediately foreseeable, and such a device could provide a hand-held battery-operated magnetometer with an atom shot-noise limited sensitivity of 0.05 pT Hz-1/2.
ACCESSION #
15403221

 

Related Articles

  • A class of micromachined magnetic resonator for high-frequency magnetic sensor applications. Yong-Seok Kim; Seong-Cho Yu; Hong Lu; Jeong-Bong Lee; Heebok Lee // Journal of Applied Physics;4/15/2006, Vol. 99 Issue 8, p08B309 

    A class of LC resonators for micromagnetic sensor devices is reported, which is fabricated by means of the microelectromechanical system (MEMS) technique. The micro-LC resonator consists of a solenoidal microinductor with a bundle of soft magnetic microwire cores and a capacitor connected in...

  • A low-power, high-sensitivity micromachined optical magnetometer. Mhaskar, R.; Knappe, S.; Kitching, J. // Applied Physics Letters;12/10/2012, Vol. 101 Issue 24, p241105 

    We demonstrate an optical magnetometer based on a microfabricated 87Rb vapor cell in a micromachined silicon sensor head. The alkali atom density in the vapor cell is increased by heating the cell with light brought to the sensor through an optical fiber, and absorbed by colored filters attached...

  • Phase error elimination in the M x magnetometer and resonance line shape control in an unstable field using the technique of invariant mapping of a spin precession signal. Vershovskii, A. K.; Aleksandrov, E. B. // Optics & Spectroscopy;Jan2006, Vol. 100 Issue 1, p12 

    A method of two-dimensional mapping of a magnetic resonance signal is proposed that allows one to exclude the effects of field variations on the processes of monitoring of the magnetic resonance spectra and phase correction in the feedback loop of the M x magnetometer.

  • Pendulously suspended magnetometer sensors. Trigg, D. F.; Olson, D. G. // Review of Scientific Instruments;Oct90, Vol. 61 Issue 10, p2632 

    Variations irt three orthogonal components of the earth's magnetic field are measured and recorded continuously at Canadian magnetic observatories. The sensors (defined as X, Y, and Z) are oriented such that the X sensor axis is aligned with geographic north, the Y sensor axis with geographic...

  • An NMR magnetometer with frequency modulation. Medvedev, E.; Deryabin, Yu. // Instruments & Experimental Techniques;Nov2008, Vol. 51 Issue 6, p846 

    An NMR tracking magnetometer, in which the frequency modulation is used instead of the traditional magnetic modulation, is described. Owing to the proposed digital compensation of modulation shifts, the tracking error is negligibly small and does not exceed the corresponding error for NMR...

  • Development of Low Power Anisotropic Magnetoresistive (AMR) Wireless Magnetometer for Earth's Magnetic Field Measurement. Ahmad Faizal Zainal Abidin; Mohamad Huzaimy Jusoh; Syed Abdul Mutalib Al Junid // Applied Mechanics & Materials;2015, Vol. 785, p714 

    Magnetometer is an instrument to measure Earth's magnetic field magnitude. Microelectromechanical system (MEMS) magnetic sensor is implemented in the device system since it consists of multi-axis magnetic field sensing driven in a single microchip physical scale at low power consumption. The...

  • Applied physics: Hybrid sensors ring the changes. Wrachtrup, Jörg; Finkler, Amit // Nature;8/28/2014, Vol. 512 Issue 7515, p380 

    The article offers information on the study conducted by S. Forstner and colleagues concerning the improved design for magnetometer, a hybrid detector for measurement of magnetic fields. It mentions that resonator and magnetostrictive material were combined to sense magnetic fields. It shows...

  • Method of the super-highly precise measurement of strong magnetic field (abstract). Sheng, Ye // Journal of Applied Physics;4/15/1985, Vol. 57 Issue 8, p3830 

    Presents an abstract of an article on the method of measuring a strong magnetic field with a nucleic magnetic resonance magnetometer using flowing water. Description of the apparatus; Derivation of equations.

  • Research on MEMS based real-time measurement system for the nuclear fuel transport cask. Wang Zilei; Xiong Wei; Zhou Zhaoying; Zhao Fei; Lu Di // Key Engineering Materials;2014, Vol. 609-610, p1226 

    A new type of measurement and recording device for the nuclear fuel transport cask was presented on this paper. With the view to the characteristics of specific application object, the system has been designed with the integration of the MEMS sensors. Several kinds of MEMS sensors include MEMS...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics