Thermographic Phosphors Thermometry is a non-invasive technique to measure the temperature distribution.
Phosphor particles are coated with transparent binders, such as hydroxypropyl cellulose (HPC) or polydimethylsiloxane (PDMS), and undergo heat treatment. When excited by ultraviolet LED light at 385 nm, the particles emit longer-wavelength light with characteristics, such as lifetime, that are dependent on temperature.
