Electric Field-Stimulated Autofluorescence for In Situ 3D Characterization of Polymer Defects.

ABSTRACT: The absence of in situ detection approaches for internal defect structures in polymers (such as microscale fillers, voids, and electrical trees) has long impeded advanced materials characterization. Herein, it is demonstrate that moderate electric fields can selectively induce intense autofluorescence at defect sites within various polymers, including epoxy resins, polyethylene, silicone rubber, and polydimethylsiloxane. Such defects may evolve gradually in polymeric materials under intense electric field stress. In later stages, they can generate significant ionizing radiation, accelerating material degradation and failure. Integrating electric field-stimulated autofluorescence with confocal laser scanning microscopy enables early detection of such defects via three-dimensional (3D) autof

SUBMITTER: Niu C 

PROVIDER: S-EPMC12677673 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature