The isothermal curing process of two photopolymers were studied using micro-Brillouin spectroscopy, which is a powerful tool for probing the local elasticity of condensed matters. The Brillouin frequency shift and the half width of the longitudinal acoustic mode showed significant changes during curing under ultraviolet (UV) irradiation, and became saturated after complete curing. These were closely correlated with the changes in the optical characteristics of the white light-emitting diodes, where the same photopolymers were used as a matrix for phosphor inclusion. These results indicate that micro-Brillouin spectroscopy may be an effective tool for monitoring the curing process of resins in various applications.
ARTICLE HISTORY
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.