New applications and perspectives of fast field cycling NMR relaxometry

摘要: The field cycling NMR relaxometry method (also known as fast (FFC) when instruments employing electrical switching of the magnetic are used) allows determination spin-lattice relaxation time (T1 ) continuously over five decades Larmor frequency. can be exploited to observe T1 frequency dependence protons, well any other NMR-sensitive nuclei, such (2) H, (13) C, (31) P, and (19) F in a wide range substances materials. information obtained is directly correlated with physical/chemical properties compound represented 'nuclear resonance dispersion' curve. We present some recent academic industrial applications showing relevance exploiting FFC complex materials study molecular dynamics or, simply, for fingerprinting or quality control purposes. basic nuclear dispersion features outlined representative examples imaging (MRI) contrast agents, porous media, proteins, food stuffs. will focus on new directions perspectives technique. For instance, introduction latest Wide Bore relaxometers probing, first time, confined surface water contained macro-pores carbonate rock cores. also evidence use technology cryogen-free variable-field electromagnet, which enhances available frequencies 2D -T2 correlation spectrum separating oil crude oil. Copyright © 2015 John Wiley & Sons, Ltd.