Imbibition of Newtonian Fluids in Paper-like Materials with the Infinitesimal Control Volume Method.

ABSTRACT: Paper-based microfluidic devices are widely used in point-of-care testing applications. Imbibition study of paper porous media is important for fluid controlling, and then significant to the applications of paper-based microfluidic devices. Here we propose an analytical approach based on the infinitesimal control volume method to study the imbibition of Newtonian fluids in commonly used paper-like materials. Three common paper shapes (rectangular paper strips, fan-shaped and circular paper sheets) are investigated with three modeling methods (corresponding to equivalent tiny pores with circle, square and regular triangle cross section respectively). A model is derived for liquid imbibition in rectangular paper strips, and the control equations for liquid imbibition in fan-shaped and circul

SUBMITTER: Song K 

PROVIDER: S-EPMC8626007 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature