Magnetic resonance force microscopy with oscillator actuation
US6181131A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 1998 |
| Grant date | Jan 30, 2001 |
| Priority date | — |
| Expiry date | Jul 24, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB82Y35/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention provides a magnetic resonance force microscopy apparatus and method for use in combination with an oscillator. The oscillator has a motional body and one member of a sample/magnet pair is disposed on the motional body. The present invention actuates the motional body. The apparatus comprises a holder adapted to mount the second member of a sample/magnet pair, an RF field generator positioned to apply a field to the sample, a motion sensor adapted to be coupled with the motional body, an actuator adapted to be coupled with the motional body, and a motion controller coupled with the actuator and with the motion sensor. The actuation effort can dampen the vibrational amplitude of the oscillator that would otherwise diminish the spatial resolution of the device; control the oscillator dynamical properties to allow more stable signal detection; vary the distance between the magnetic tip and the sample material for sample scanning and field modulation; apply actuation and control signals to help prevent the oscillator from contacting and sticking to the sample material or other device components; provide a method for calibrating instrument subsystems; provide a way …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.