| Some scientists believe that crystal structure and impurities are central to whether a material becomes triboluminescent. |
| Some of the triboluminescent materials appear to partially decompose in an hourglass shape that suggests chemical reaction occurs selectively along only some crystal axes. |
| The triboluminescent spectrum is basically similar to that of photoluminescence, which correlates with the disorders of F atoms. |
| One reference states that research is underway to apply triboluminescent flashes to sense automobile crashes and inflate air bags. |
| It occurred to me, however, that triboluminescent materials, which emit light only when fractured, could offer a better approach. |
| Since the beginning of 21st Century, scientists and engineers have been investigating triboluminescent materials for smart impact sensors. |
