Anti-drift device for side entry electron microscope specimen holders
US4703181A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 7, 1986 |
| Grant date | Oct 27, 1987 |
| Priority date | — |
| Expiry date | Apr 7, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J37/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A device interposed between an electron microscope specimen holder and a microscope translation stage constructed of a special combination of materials arranged in such a manner that little or no specimen drift occurs when the temperature of the complete assembly is changed. In the first and more common arrangement, the device is placed in the nose of the standard microscope specimen holder and consists of a silica rod inside a metal tube, the material of the tube having a larger coefficient of thermal expansion than the material of the specimen rod. In the second, and less common arrangement the device is placed on the opposite side of the specimen away from the nose of the holder and consists of one tube, the material of which must have a larger coefficient of thermal expansion than the material of the specimen holder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.