Development of New Polymer Refractive Index Matched to Water

We discuss several options of materials that are refractive index-matched to water near room temperature. They are fluorine-based polymers, some are commercially available, while we are

developing new formulas that offer more flexibility in their fabrication. Currently, materials have been cast to a thickness of up to 5 mm and when prime show good adhesion to structural components, such as BK7, fused quartz, and acrylic. Efforts on 3d printing of the polymers is on-going and will be reported. We will compare the efficacy of the cured polymer with the

thermoplastic materials Mexflon.