I am a research and development scientist/engineer specializing in instrument modeling, prototyping, and measurement. I have designed, modeled, and prototyped instruments for biological, chemical, and physical measurements.

My primary interest is designing  scientific instrumentation and developing new computational models to optimize the behavior of that instrumentation.

Dr. Geoff Schrank

MY LATEST RESEARCH

Hyperpolarized gas production requires alkali metal vapor to act as a "catalyst". It is the intermediary between the spin-angular momentum in the incident light and the noble gas nuclei. The alkali metal (usually rubidium) is driven into the vapor form for the process exclusively by controlling the temperature of the reaction (pumping) cell. Over the years, difficulties have surfaced in finally controlling the vapor pressure of the alkali due to unwanted sources of heating. We've developed a new device that may alleviate many of these problems and finally divorce the alkali vapor pressure from the temperature of the cell.  

The recent poster presented at PiNG on this topic can be found here.

The fundamental science of hyperpolarizing gas is a mature, 30 year field. Much of the research on the field now resides in application and optimization of the process. I've been with researchers across institutions to provide quality simulations of the spin-exchange optical pumping (SEOP) process.  In particular, I've developed finite element models using open-source solutions. These reactor cell models will help researchers better understand their process and optimize production yields.

Code for a full 3D SEOPS simulations are in development. Beta code can be found at https://github.com/drschrank/elmerfem

More particle simulation videos can be found at https://www.youtube.com/channel/UCCuVJ1-2o8gLKV0oZMyfZ4A?view_as=subscriber

The recent poster presented at PiNG on this topic can be found here.

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