Effect of Temperature on the Mechanoluminescence of Fluorescent and Phosphorescent Molecular Crystals

Transient behaviour of the mechanoluminescence induced by impulsive deformation of fluorescent and phosphorescent crystals

“…Fig. 15 shows that the ML intensity of organic crystals decreases with increasing temperature of the crystals [48]. Such dependence of ML intensity on temperature is evident from Eq.…”

Triboluminescence with and without Air

“…37, 49 Brady and Rowell found that fracture of granite under water produced lines from atomic and molecular hydrogen. 65 Both lightning emitters 12,105 and tribophotoluminescent solids 35,58,64 have been observed to emit less strongly under less polar liquids such as ether, ketones, and hydrocarbons.…”

“…We tried sulfur hexafluoride, used to prevent dielectric breakdown in high-voltage equipment, but the pump cycle took too long. Thus, we continued with the gases that others had used, including carbon dioxide, ,, helium, ,, and argon. ,− We did not use neon because of its high cost. Unfortunately, we were unable to examine 1 because we could not accomplish the crystallization step, but previous workers have done so…”

Triboluminescent materials for structural damage monitoring

“…2B, a perforated brass plate situated beneath the sample is used to allow the emitted photons to reach the detector. In other designs 20,23 a simple transparent plate is suf®cient. Fig.…”