Method and apparatus for imaging microscopic spatial variations in small currents and magnetic fields
US5491411A · kind A · utility
15Cited by
17References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 14, 1993 |
| Grant date | Feb 13, 1996 |
| Priority date | — |
| Expiry date | May 14, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S505/846
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A magnetic flux microscope that measures the magnetic field about a sample surface. The apparatus uses a thin-film superconducting quantum interference device (SQUID) as the scanning device. Magnetic shielding is provided about the SQUID and is held stationary relative to the SQUID. The apparatus and method provides a very high magnetic image of the sample with a very high spatial and field resolution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.