Some types of ceramics show thermally-induced photoluminescence, emitting light in the far infrared (FIR) region of the electromagnetic spectrum.
When in contact with the body heat, the thermoluminescence of the fabrics with embedded bioceramic is enhanced.
One way in which fabrics can be impregnated with ceramic is the process of electrophoretic deposition or EPD in the industry.
Next, a current is passed through and the nano ceramic particles coat and impregnate the fabric.
The process by which the textile is impregnated depends on what materials will be used, as well as the intended purpose of that fabric.