magic angle spinning


Also found in: Wikipedia.

magic angle spinning

An MRI technique in which rigid systems averaging of chemical shift anisotropy (a line) or “resolution” method is accomplished mechanically. MAS can, in principle and occasionally in practice, be used to eliminate another important line-broadening interaction, that of the magnetic dipole–dipole interaction between pairs of nuclear magnetic moments. MAS is accomplished mechanically by rapid spinning of the sample about an axis, making an angle of 54º 44’ (cos 1 √1/3) with Ho.
References in periodicals archive ?
What is needed is a (1) HR-MAS NMR spectrometer to characterize soluble functional polymers with high resolution and x-core sensitivity and for examining the structure of the gel-like and particle-shaped samples made of polymers using high-resolution magic angle spinning ( HR-MAS).
Among the topics in this edition are using lipidic advances in imaging secondary ion mass spectrometry for biological samples, electron crystallography as a technique to study the structure of membrane proteins in a lipidic environment, insights from type II diabetes into the interplay of catalysis and toxicity by amyloid intermediates in lipid bilayers, biochemical and structural properties of the integrin-associated cytoskeleton protein talin, bioimage informatics for experimental biology, and determining the structure and dynamics of membrane proteins by magic angle spinning solid-state nuclear magnetic radiation.
The Magic Angle Spinning (MAS) of the samples leads to the complete averaging of the chemical shift anisotropy (CSA) and dipolar interactions: it follows that highly resolved spectra can be recorded even for powdered samples.
The 900 MHz instrument in Ottawa is the latest generation digital Avance II NMR spectrometer manufactured by Bruker BioSpin and is equipped with a number of solid-state NMR probes, for both magic angle spinning (MAS) and static, capable of wide range of multinuclear NMR experiments.
The experimental conditions were as follows: 4 kHz magic angle spinning, high power proton decoupling, 0.
flow NMR, solvent suppression, Magic Angle Spinning, etc.
Sophisticated experimental approaches will be introduced at high magnetic field, in combination with ultra-fast magic angle spinning (MAS), enabling the structure characterization of non-crystalline assemblies that cannot be currently carried out by any other experimental technique, and notably, the determination at atomic level of the structural details that govern protein-protein interactions in functional assemblies.
In particular, they demonstrated that highly informative Si spectra of zeolites could be obtained by magic angle spinning (MAS) experiments on a commercial high resolution NMR spectrometer.
Particular techniques driving solid state NMR analysis include high resolution magic angle spinning (hrMAS).
Double-Quantum NMR Spectroscopy of Dipolar Coupled Spins Under Fast Magic Angle Spinning (H W Spiess)