What is fluorescent thermometry?

Fluorescent thermometry involves the use of a fluorescent dye, whose fluorescence intensity is a strong function of temperature, to infer the temperature of a fluid or surface. The dye is dissolved in a fluid of interest, or coated on a surface, and is excited to fluoresce by incident light.

What is the difference between photoluminescence and fluorescence thermometry?

Photoluminescence; Temperature measurement using fluorescence Fluorescent thermometry involves the use of a fluorescent dye, whose fluorescence intensity is a strong function of temperature, to infer the temperature of a fluid or surface.

Can fluorescence be used to measure optical temperature?

Specifically, crystals of the organic crystalline material that we describe display reversible, reproducible, and strong temperature-induced shifts of their fluorescence, which translates into an opportunity for reproducible optical temperature measurement based on fluorescence.

What is the difference between surface temperature measurement and fluorescence measurement?

In the case of fluid temperature measurement, the fluid in a plane of interest is illuminated with incident light (typically a sheet of laser light) and the dye is excited to fluoresce. In the case of surface temperature measurement by fluorescence, the surface coated with the dye would be illuminated with incident light.

Can organic crystals be used as fluorescence-based thermal sensors?

A mechanically compliant and robust sensing material is essential for accurate and reliable thermal sensing. Here, the authors report the use of elastic organic crystals as fluorescence-based thermal sensors that cover a wide range of temperatures with complete retention of the sensor’s elasticity.

How can temperature be measured by two-dye fluorescence?

Temperature measurement by two-dye fluorescence requires efficient separation of the two fluorescent emissions so that their emissions can be imaged separately over identical spatial domains at the same instant in time.