A rotatable flat coil for static solid-state nuclear magnetic resonance spectroscopy

Abstract

A holder allowing rotation of a flat coil relative to the static magnetic field (B0) of a nuclear magnetic resonance (NMR) spectrometer over the range of orientations from parallel to perpendicular has been built and incorporated into a two-channel wide line static solid-state NMR probe. Radio frequency induction by the coil is perpendicular to B0 for all rotational angles. Such a coil holder provides ready access to an additional directional variable for experiments exploiting sample orientation such as those using planar-supported oriented phospholipid bilayers. Rotation of the flat coil is demonstrated using 31P NMR of oriented phospholipid and peptide bilayers sandwiched between pairs of mica substrates. © 2005 American Institute of Physics.