Methods and apparatus for electrophoretic mobility determination using phase light scattering analysis
US7295311B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 1, 2004 |
| Grant date | Nov 13, 2007 |
| Priority date | — |
| Expiry date | Dec 27, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/51
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus and method are disclosed for determining electrophoretic mobility using scattering light phase analysis comprising emitting a laser light along a path and transmitting a first portion of the laser light and reflecting a second portion of the laser light. The apparatus and method can also comprise deflecting one of the first and second portions of the laser in response to a drive signal, holding a sample to receive at least one of the first and second portions of the laser light under an electric field and output a composite light wave, outputting a photopulse signal based on the composite light wave, and measuring the electrophoretic mobility of the sample based on a phase shift analysis using cross-correlation of the photopulse signal with the drive signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.