Demonstration of Quantum Dot Thermometry for the NASA ZBOT Experiment

We have previously discussed the development and performance estimates of our quantum dot thermometry (QDT) as a whole-field planar optical technique for thermometry in the NASA Zero Boil-off Tank experiment. The technique is based on ratiometric Laser Induced Fluorescence (LIF) using nanocrystal quantum dots that are modified to dissolve/disperse into the working fluid (Perfluoropentane) of the ZBOT experiment. In this talk, we will discuss experiments using a single-color camera demonstrating the QDT technique. The thermal fields observed highlight the importance of using a ratiometric approach. We will discuss the specific challenges in processing QDT images obtained using a single-color camera, and also provide an update on the final hardware arrangement that will be used on the upcoming experiment onboard the ISS.