DNP-enhanced measurements on Bacteriorhodospin

Our Warwick colleagues are starting to make state-of-the art, and scientifically, useful 187GHz
DNP-enhanced NMR measurements on materials such as 

Bacteriorhodopsin

which acts as a Proton pump in Archaea,     

 (Note the number of scans and graph scaling to see the full benefit of the technique)

as well as simpler molecules such as

Urea

and

Glycine

The EPSEC funded Spectrometer make full use of use of the frequency independence of our
transmission optics - incuding the  Quasi-Optical feed structure to feed the mm-wave signal
down the bore of a Doty Magic Angle  Spinning probe

The Spectrometer  - design to work at a Gyrotron's second harmonic around 400 GHz - is giving
significant  enhancements (60 in the case of Urea) at half the frequency (187 GHz)

More details of the optics can be found here

February 2011