Porous Cellulose Substrate Study to Improve the Performance of Diffusion-Based Ionic Strength Sensors.

ABSTRACT: Microfluidic paper-based analytical devices (µPADs) are leading the field of low-cost, quantitative in-situ assays. However, understanding the flow behavior in cellulose-based membranes to achieve an accurate and rapid response has remained a challenge. Previous studies focused on commercial filter papers, and one of their problems was the time required to perform the test. This work studies the effect of different cellulose substrates on diffusion-based sensor performance. A diffusion-based sensor was laser cut on different cellulose fibers (Whatman and lab-made Sisal papers) with different structure characteristics, such as basis weight, density, pore size, fiber diameter, and length. Better sensitivity and faster response are found in papers with bigger pore sizes and lower basis weight

SUBMITTER: Khosravi H 

PROVIDER: S-EPMC9699251 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature