Field-cycling NMR detection of magnetoacoustically manipulated nematic ordered states: Memory effects

Application of field-cycling NMR relaxometry to the study of ultrasound-induced effects in the molecular dynamics and order of mesomorphic materials

“…5). In this limit, amplitude modulation of the acoustic field intensity has a negligible effect [64].…”

“…The extension of these studies to the bulk prevents the use of standard optical methods. It was recently shown that FFC relaxometry may be sensitive to metastable states in the bulk as induced by combining a pulsed magnetic field and an amplitude modulated acoustic field [64]. The mean square amplitude of the hydrodynamic modes in the presence of sound, as derived from the equipartition theorem can be expressed as:…”