Planar micro-miniature ion trap devices
US7217922B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2005 |
| Grant date | May 15, 2007 |
| Priority date | — |
| Expiry date | Mar 14, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/0018
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A micro-miniature ion trap device comprises a wafer (or substrate) having a major surface, a multiplicity of electrodes forming a micro-miniature ion trap in a region adjacent the major surface when voltage is applied to the electrodes, characterized in that the multiplicity includes a first, planar annular electrode located over and rigidly affixed to the major surface, and at least one second, planar annular electrode located over and rigidly affixed to the major surface, the at least one second electrode being concentric with the first electrode. The at least one second electrode may be completely annular, in that the annulus forms a closed geometric shape, or it may be partially annular, in that the annulus has a slot or opening allowing access to the first electrode. In accordance with a preferred embodiment of our invention, the at least one second electrode is C-shaped, and the angle subtended by the C-shape is greater than 180 degrees.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.