Evanescent Waves Nuclear Magnetic Resonance

El Mohamed Halidi (1) , Eric Nativel , Mohamad Akel (1) , Samir Kenouche (1) , Christophe Coillot (1) , Eric Alibert (1) , Bilal Jabakhanji (1) , Remy Schimpf , Michel Zanca (1) , Paul Stein , Christophe Goze-Bac (1)

1 L2C - Laboratoire Charles Coulomb

Nuclear Magnetic Resonance spectroscopy and imaging can be classified as inductive techniques working in the near- to far-field regimes. We investigate an alternative capacitive detection with the use of micrometer sized probes positioned at sub wavelength distances of the sample in order to characterize and model evanescent electromagnetic fields originating from NMR phenomenon. We report that in this experimental configuration the available NMR signal is one order of magnitude larger and follows an exponential decay inversely proportional to the size of the emitters. Those investigations open a new road to a better understanding of the evanescent waves component in NMR with the opportunity to perform localized spectroscopy and imaging.

Domaines: Science des matériaux [cond-mat.mtrl-sci]; Physique Médicale [physics.med-ph]; Instrumentations et Détecteurs [physics.ins-det]

El Mohamed Halidi, Eric Nativel, Mohamad Akel, Samir Kenouche, Christophe Coillot, et al.. Evanescent Waves Nuclear Magnetic Resonance. PLoS ONE, 2016, 11 (1), pp.e0144483. ⟨10.1371/journal.pone.0144483⟩. ⟨hal-01394852⟩