Invention Grant
- Patent Title: Apparatus and method for determining magnetic properties of materials
- Patent Title (中): 用于确定材料磁性能的装置和方法
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Application No.: US11912930Application Date: 2006-04-28
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Publication No.: US08174259B2Publication Date: 2012-05-08
- Inventor: Simon Richard Hattersley , Quentin Andrew Pankhurst , Audrius Brazdeikis
- Applicant: Simon Richard Hattersley , Quentin Andrew Pankhurst , Audrius Brazdeikis
- Applicant Address: US TX Houston GB London
- Assignee: University of Houston,University College London
- Current Assignee: University of Houston,University College London
- Current Assignee Address: US TX Houston GB London
- Agency: K&L Gates LLP
- Priority: GB0508886.9 20050429
- International Application: PCT/GB2006/001575 WO 20060428
- International Announcement: WO2006/117530 WO 20061109
- Main IPC: G01R33/02
- IPC: G01R33/02 ; G01R33/12

Abstract:
Apparatus for determining magnetic properties of materials comprises a portable probe (1), an equipment trolley (2) holding cryogenics and electronics and connecting cables (3). The probe (1) comprises a drive coil (4) and a correction coil (5), the drive coil (4) being disposed symmetrically with respect to an inner second-order gradiometer sensor coil (8). Electrical connectors in the form of 2-meter long Belden (1192A) microphone cables (3) are used to connect the apparatus on the equipment trolley (2) to the drive coil (4), the correction coil (5) and the sensor coil (8). The drive coil (4) is driven so as to generate a sinusoidally varying magnetic field. The electronics comprise a flux-locked loop (9), a SQUID controller (10), a data acquisition module (11), which captures and processes the signals and a computer (12). A liquid-nitrogen dewar (13) is supported on the equipment trolley (2) and houses a sensitive SQUID detector (14) and a transfer coil (15) made from copper. Possible applications of the apparatus include an intra-operative tool for sentinel lymph node detection in the treatment of breast cancer, and a non-destructive evaluation tool for detecting voids and defects in aluminum and applications in the aeronautics industry.
Public/Granted literature
- US20090201016A1 Apparatus and method for determining magnetic properties of materials Public/Granted day:2009-08-13
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