New horizons for magic-angle spinning NMR.

Recent developments in sample rotation technology have had a profound impact on magic-angle-spinning NMR. First, rotation frequencies approaching, and even exceeding, strong homonuclear spin interactions have made high-resolution solid-state (1)H spectroscopy much more accessible. Second, the new concept of fast rotation sweep spectroscopy has emerged. Third, high-resolution NMR at cryogenic temperatures has become feasible, offering an enormous sensitivity gain and the opportunity to study a wide range of physical phenomena.