Methods and apparatus for investigation of volume change dynamics of physiologically active samples
US8520215B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2009 |
| Grant date | Aug 27, 2013 |
| Priority date | — |
| Expiry date | Nov 28, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/8466
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A transversal change of the position of a measured sample surface exposed to the influence of visible radiation for example actinic light, is measured interferometrically by a reflecting target, which is in mechanical contact with the measured sample surface, and reflects a measuring beam, generated together with a reference beam by a laser source, and the transversal change of the position of the measured sample surface is detected from the phase difference of harmonic waves in the beam of interfering radiation. The device involves, for example, a special detection connection of photodetectors, a measuring unit and a basic module with a computer, the design of reflecting targets for liquid and solid samples, an optomechanical dimension transmitter and a holder of solid samples.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.