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J.-P. Korb EURELAX webinar

J.-P. Korb EURELAX webinar

par Guillaume Mériguet - 30 juillet (PHENIX)

Jean-Pierre Korb presented the following webinar for the EURELAX network supported by Stelar.

Applications of FFC-NMR relaxometry to porous materials and biological samples


Fast field cycling (FFC) NMR technique is a very efficient way of probing the magnetic-field dependence of the nuclear-spin-lattice relaxation rate R1=1/T1 on a very large range of Larmor frequencies (10 kHz - 40 MHz). This allows exploring extensively the fluctuations to which the nuclear spin relaxation is sensitive. This technique thus offers multiscale opportunities for characterizing the molecular dynamics and transport properties of aprotic and protic (water) liquids embedded in calibrated porous disordered materials. Industrial applications will be presented on the progressive setting of cement-based materials. FFC experiments will also be presented for understanding the dynamics and wettability of petroleum fluids embedded in petroleum rock cores and on the dynamics of hydrocarbons at proximity of asphaltene aggregates on heavy crude oils. Some recent NMRD data are finally outlined for studying biological samples such as dynamical spectrum of water within quasi-spherical phospholipid vesicles and at proximity of proteins in solution. Last, applications to biological tissues and in vivo human brain MRI at variable magnetic fields are finally presented.


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