3D printing of hollow geometries using blocking liquid substitution stereolithography.

ABSTRACT: Micrometer scale arbitrary hollow geometries within a solid are needed for a variety of applications including microfluidics, thermal management and metamaterials. A major challenge to 3D printing hollow geometries using stereolithography is the ability to retain empty spaces in between the solidified regions. In order to prevent unwanted polymerization of the trapped resin in the hollow spaces-known as print-through-significant constraints are generally imposed on the primary process parameters such as resin formulation, exposure conditions and layer thickness. Here, we report on a stereolithography process which substitutes the trapped resin with a UV blocking liquid to mitigate print-through. We investigate the mechanism of the developed process and determine guidelines for the formulat

SUBMITTER: Bhanvadia AA 

PROVIDER: S-EPMC9829859 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature