Multiscale and luminescent, hollow microspheres for gas phase thermometry.

ABSTRACT: Recently developed laser-based measurement techniques are used to image the temperatures and velocities in gas flows. They require new phosphor materials with an unprecedented combination of properties. A novel synthesis procedure is described here; it results in hierarchically structured, hollow microspheres of Eu³⁺-doped Y₂O₃, with unusual particle sizes and very good characteristics compared to full particles. Solution-based precipitation on polymer microballoons produces very stable and luminescent, ceramic materials of extremely low density. As a result of the - compared to established template-directed syntheses - reduced mass of polymer that is lost upon calcination, micron-sized particles are obtained with mesoporous walls, low defect concentrations

SUBMITTER: Bischoff L 

PROVIDER: S-EPMC5766626 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature