Materials, both glass and glass-ceramic, that exhibit UV-induced changes in light transmission and electrical conductivity behavior. A label portion is separable from the wristband portion such that the wristband may be applied to a person or object to be identified. A main body includes an attachment shaft, which is formed by a conductive member. The injection assembly can inject diffusion fuel into the combustor, provides flame aerodynamic stabilization in the combustor, and may include an ignition device.