Low-Field NMR Relaxation Times Distributions and Their Magnetic Field Dependence as a Possible Biomarker in Cartilage

2017 ◽  
pp. 952-955 ◽  
Author(s):  
Oleg V. Petrov ◽  
Erik Rössler ◽  
Carlos Mattea ◽  
Miika T. Nieminen ◽  
Petri Lehenkari ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Field Dependence ◽  
Magnetic Field Dependence ◽  
Relaxation Times ◽  
Nmr Relaxation ◽  
Low Field ◽  
Nmr Relaxation Times ◽  
Low Field Nmr

NMR Force Microscopy of Ammonium Sulfate with 12 μm Resolution

2012 ◽  
Vol 1468 ◽  
Author(s):  
Isaac Manzanera ◽  
John T. Markert
Keyword(s):  
Magnetic Field ◽  
Single Crystal ◽  
Ammonium Sulfate ◽  
Room Temperature ◽  
Relaxation Times ◽  
Nmr Relaxation ◽  
Fluctuation Spectrum ◽  
One Dimensional ◽  
Force Microscopy ◽  
Nmr Relaxation Times

ABSTRACTPosition-dependent force-detected NMR measurements on a 25x15x7 μm3 single crystal of ammonium sulfate (NH4)2SO4 were performed at room temperature in a sample-on-oscillator configuration. Force signals were detected with 12 μm resolution in a one-dimensional scan. Measurements of NMR relaxation times T2* = 1.5 ± 0.3 μs, T2 = 44 ± 2 μs, and T1 = 5.6 ± 0.7 s were obtained in an 8-T magnetic field, revealing an unexpected frequency-dependent fluctuation spectrum at room temperature.

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