Preprints
https://doi.org/10.5194/mr-2022-24
https://doi.org/10.5194/mr-2022-24
 
13 Jan 2023
13 Jan 2023
Status: this preprint is currently under review for the journal MR.

A perspective for magic angle spinning above 250 kHz – OptiMAS

Jan Korvink Jan Korvink
  • Institute of Microstructure Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany

Abstract. Magic angle spinning averages out the dipolar coupling among spins in rigid solids, as well as other sources of magnetic inhomogeneity, leading to sideband suppression. To achieve line widths close to that achievable for the liquid state, it has been postulated that 250 kHz rotation frequencies have to be exceeded. Here we explore a perspective for a research project to achieve this goal.

Jan Korvink

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • CC1: 'Comment on mr-2022-24', Tom Barbara, 16 Jan 2023
    • AC1: 'Reply on CC1', Jan Gerrit Korvink, 17 Jan 2023
      • CC2: 'Reply on AC1', Tom Barbara, 17 Jan 2023
        • AC2: 'Reply on CC2', Jan Gerrit Korvink, 19 Jan 2023
          • CC3: 'Reply on AC2', Tom Barbara, 19 Jan 2023
            • AC4: 'Reply on CC3', Jan Gerrit Korvink, 20 Jan 2023
  • EC1: 'Comment on mr-2022-24', Kong Ooi Tan, 19 Jan 2023
    • AC3: 'Reply on EC1', Jan Gerrit Korvink, 19 Jan 2023

Jan Korvink

Jan Korvink

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Short summary
The magic angle spinning (MAS) technique of solid state NMR requires samples to be rapidly rotated within a magnetic field. The rotation rate speed record is 150 kHz, or 9 million RPM, and hence MAS turbines hold the world rotation speed record for extended objects. The containers holding the samples are made of the strongest materials known, to be able to withstand the excessive centrifugal forces. To overcome the speed limit, this paper delineates a way to do so using an optical tweezers setup