Fluctuation analysis for enhanced particle detection
US4676640A · kind A · utility
28Cited by
7References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 12, 1984 |
| Grant date | Jun 30, 1987 |
| Priority date | — |
| Expiry date | Sep 12, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/64
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An improvement is disclosed in a method for measuring intensity fluctuations of an electromagnetic signal of wavelength between about 350 nm to 1200 nm from a liquid medium. The improvement comprises autocorrelating the intensity of the signal over a non-zero interval the duration of which is short compared to the mean duration of the fluctuations. The method has particular applciations in the diagnostic area, particularly where such fluctuations are a result of the presence of fluroscent particles in a liquid medium. Methods are also disclosed for determining an analyte in a sample suspected of containing such analyte.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.