High-pressure cross-polar microscopy cells having adjustable fluid passage and methods of use
US7593101B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2007 |
| Grant date | Sep 22, 2009 |
| Priority date | — |
| Expiry date | Jan 7, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/0332
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus and methods are described for observing samples at non-ambient temperatures and pressures. One apparatus comprises a cell body having a fluid flow-through passage and a light passage intersecting the fluid flow-through passage at an adjustable light pathlength fluid analysis region; first and second light-transmissive windows in the light passage, each window having at least one crystal axis aligned longitudinally with a longitudinal axis of the window, the windows having opposed, spaced apart, substantially flat surfaces defining the adjustable light pathlength fluid analysis region, the first window having a first window holder and the second window having a second window holder, the first window rotationally isolated from the first window holder, the second window rotationally coupled to the second window holder, the first window holder able to gradually move the first window and thus adjust the light pathlength; and first and second light polarization filters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.