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Vortrag von Prof. Dr. Geoffrey Bodenhausen: "Is magnetic resonance a discipline gifted with eternal youth?"

Anfang
29.01.2019

Vortragender: Prof. Dr. Geoffrey Bodenhausen / Département de chimie, Ecole Normale Supérieure, Paris

Anfang: 29.01.2019 09:30 -10:30Uhr

Veranstaltungsort: Forschungszentrum Jülich GmbH, im Gebäude 01.3z, Raum 3001

Titel: "Is magnetic resonance a discipline gifted with eternal youth?

 

Abstract:
At the time of its invention in 1945, magnetic resonance was essentially a curiosity. It took a while to realize that “induction spectroscopy”, as Felix Bloch liked to call it, was based not merely on the absorption of photons, as in most other forms of spectroscopy practiced in those days, but on the excitation of coherent superpositions of states that continue to precess freely after excitation and induce signals in a receiver coil. This opens up all sorts of possibilities that are relatively easy to explore in magnetic resonance, but are much harder to put into practice in, say, optical spectroscopy, where the time-scales are at least a million times shorter. Thus, the transfer coherences became a subject on itself, with numerous ramifications, such as correlation spectroscopy, multiple-quantum spectroscopy, and, last but not least, magnetic resonance imaging. Meanwhile, the range of applications grew from homogeneous solutions to crystalline and amorphous solids, from the real-time monitoring of chemical reactions to the characterization of surfaces decorated for heterogeneous catalysis, etc. The instrumentation has undergone a surprising renewal with recent development of dynamic nuclear polarization in solids and liquids. Yet the question if the discipline is indeed gifted with eternal youth keeps nagging its practitioners


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