Temperature measurements in the freezing supercooled water droplet by utilizing molecular tagging thermometry technique.In the present study, we report novel methods to achieve accurate temperature measurements inside the water droplet at its supercooled state as well as during its freezing process.  The temperature measurements were based on the molecular tagging thermometry technique. 
molecular tagging thermometry technique
In order to maintain the nonfreezing state of the phosphorescent tracer complex aqueous solution at a subfreezing temperature, a double-layer temperature control container was designed and fabricated. 
double-layer temperature control container