Magnetically compensated NMR rotor
US11073579B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Apr 1, 2021 |
| Grant date | Jul 27, 2021 |
| Priority date | — |
| Expiry date | Apr 1, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/31
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An NMR rotor comprises a receptacle for inserting a sample container into a homogeneous region of an NMR magnetic field with flux density B, the field vector of which in the homogeneous region extends in the vertical direction along a z-axis. The rotor passes through regions with inhomogeneous magnetic field components and a flux density gradient dB/dz when the sample container is introduced. The rotor includes at least two different materials, one with diamagnetic properties and another with non-diamagnetic properties. The different materials are arranged to be geometrically distributed in the rotor so that the magnetic force on the rotor under the effect of a product t of magnetic flux density B and flux density gradient dB/dz, the magnitude of which exceeds 1400 T2/m, either acts in the same direction as the weight force of the rotor or is smaller in magnitude than the weight force of the rotor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.