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Assessment of Boron Doped Diamond Electrode Quality and Application to In Situ Modification of Local pH by Water Electrolysis
Published on: January 6, 2016
Electroplated waveguides to enhance DNP and EPR spectra of silicon and diamond particles
Aaron Himmler1, Mohammed M Albannay1,2, Gevin von Witte1,2
1ETH Zurich, Laboratory of Physical Chemistry, Zurich 8093, Switzerland.
Abstract:
Electroplating the waveguide of a 7 T polarizer in a simple innovative way increased microwave power delivered to the sample by 3.1 dB. Silicon particles, while interesting for hyperpolarized MRI applications, are challenging to polarize due to inefficient microwave multipliers at the electron Larmor frequency at high magnetic fields and fast electronic relaxation times. Improving microwave transmission directly translates to more efficient EPR excitation at high-field, low-temperature conditions and promises faster and higher Si polarization buildup through dynamic nuclear polarization (DNP).
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