STRESS-INDUCED LIGHT-EMITTING PARTICLE, STRESS-INDUCED LIGHT-EMITTING ARTIFICIAL SAND, STRESS-INDUCED LIGHT-EMITTING PARTICLE AGGREGATE, STRESS-INDUCED LIGHT-EMITTING FLEXIBLE STRUCTURE AND METHOD FOR PRODUCING STRESS-INDUCED LIGHT-EMITTING PARTICLE

摘要

PROBLEM TO BE SOLVED: To provide stress-induced light-emitting particles which can emit light in response to external force, is not harmful to human being and environments, is lightweight, can comfortably be handled, scarcely has dangers due to dropping, throwing, and the like, and can improve the entertainment properties of amusement spaces, urban spaces, life spaces, and the like.;SOLUTION: The stress-induced light-emitting particles are characterized by having a particle diameter of 0.01 to 10 mm. The stress-induced light-emitting particles may be formed from only a stress-induced light-emitting substance or from the composite substance of the stress-induced light-emitting substance with an organic substance or inorganic substance. The stress-induced light-emitting particles may have hollow structures. The stress-induced light-emitting substance includes e.g. SrAl₂O₄ : Eu. The substance for forming the composite substance is, for example, a polyester resin. The stress-induced light-emitting particles are used to make artificial sand or bead cushion.;COPYRIGHT: (C)2004,JPO