Using heat to control the sample spinning speed in MAS NMR

J Magn Reson. 2011 Oct;212(2):249-53. doi: 10.1016/j.jmr.2011.07.009. Epub 2011 Jul 23.


A new approach using temperature to control the spinning speed of a sample rotor in magic-angle spinning NMR is presented. Instead of an electro-mechanical valve that regulates the flow of drive gas to control the spinning speed in traditional MAS NMR systems, we use a small heater wire located directly in the stator. The sample spinning speed is controlled very accurately with a surprisingly low heating power of 1 W. Results on a benchtop unit demonstrate the capability of the system.

Publication types

  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Air
  • Electromagnetic Fields
  • Hot Temperature*
  • Magnetic Resonance Spectroscopy / instrumentation
  • Magnetic Resonance Spectroscopy / methods*
  • Temperature