Electricity: measuring and testing – Particle precession resonance
Reexamination Certificate
2005-02-08
2005-02-08
Shrivastav, Brij B. (Department: 2859)
Electricity: measuring and testing
Particle precession resonance
C324S307000
Reexamination Certificate
active
06853187
ABSTRACT:
Apparatus and method for detecting and quantifying magnetic field gradients by measuring the magnetic force acting on a mechanical oscillator with an attached spin-containing material (any material that displays a magnetic moment in the presence of a magnetic field) having a modulated magnetic moment with a temporal response that matches the resonance frequency of the mechanical oscillator. Modulation of the magnetic moment in the direction of the measurement is achieved by the action of a spatially uniform polarizing field with a temporal response that matches the resonance frequency of the mechanical oscillator.
REFERENCES:
patent: 3924176 (1975-12-01), Fletcher et al.
patent: 5017010 (1991-05-01), Mamin et al.
patent: 5266896 (1993-11-01), Rugar et al.
patent: 5315247 (1994-05-01), Kaiser et al.
patent: 5442288 (1995-08-01), Fenn et al.
patent: 5481189 (1996-01-01), DiLella
patent: 5530348 (1996-06-01), Heflinger
patent: 5623205 (1997-04-01), Tomita et al.
patent: 5739686 (1998-04-01), Naughton et al.
patent: 5818227 (1998-10-01), Payne et al.
patent: 5998995 (1999-12-01), Osiander et al.
patent: 6037769 (2000-03-01), Hoon et al.
patent: 6100687 (2000-08-01), Weitenkamp et al.
patent: 6181131 (2001-01-01), Bruland et al.
patent: 6429652 (2002-08-01), Allen et al.
patent: 6433543 (2002-08-01), Shahinpoor et al.
patent: 43 35 486 (1994-05-01), None
Temperature Measurement at the End of a Cantilever Using Oxygen Paramagnetism; by Thurber, KR; Harrell LE and Smith, DD (abstract)vol. 93 no. 7(2003), Journal of Applied Physics.
Micromechanical Detectors for Ferromagnetic Resonsncs Spectroscopy; by Moreland, J; Kabos, P; Jander A; Loehndorf M; McMichael R; and Lee, C. Proceedings of SPIE, vol. 4176 pp 84-95 (abstract).
The activated torsion oscillation magnetometer (ATOM); by Asti, G; Ghidini M.; Pellicelli R; and Solzi M. vol. 242-245 Journal of Magnetism Apr. 2002 (abstract).
Temperature Measurement at the End of a Cantilever Using Oxygen Paramagnetism; by Thurber, LE; Kent R. Harrell and Doran D. Smith, Journal of Applied Physics Apr. 1, 2003 93(7) pp 4297-4299 (abstract).
Roca Benjamin Y.
Shrivastav Brij B.
The Johns Hopkins University
LandOfFree
Force detected magnetic field gradiometer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Force detected magnetic field gradiometer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Force detected magnetic field gradiometer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3487299