Video-based fractional order identification of diffusion dynamics for the analysis of migration rates of polar and nonpolar liquids: Water and oil studies

Author(s)

Andrade, Stefani I. E. ^[1] ; Galvao, Roberto K. H. ^[2] ; Araujo, Mario C. U. ^[1] ; Hadjiloucas, Sillas ^[3]

Affiliation

^[1] Univ Fed Paraiba, Dept Quim, CCEN, Lab Automacao & Instrumentacao Quim Analit & Quim, Caixa Postal 5093, BR-58051970 Joao Pessoa, Paraiba - Brazil

^[2] Inst Tecnol Aeronaut, Dept Elect Engn, Sao Jose Dos Campos, SP - Brazil

^[3] Univ Reading, Sch Biol Sci, Dept Biomed Engn, Reading RG6 6AY, Berks - England

• Document type: Journal article
• Source: Review of Scientific Instruments; v. 92, n. 3 MAR 1 2021.
• Web of Science Citations: 0

Abstract

Diffusion dynamics of water and oil are observed in real-time using video images. Savitzky-Golay derivative filtering ensures accurate localization of the liquid front. System identification demonstrates that a fractional-order model with only two parameters may be used to describe the dynamics of the diffusion process. The method paves the way for video-based cellulose filter paper microfluidics and lateral flow assays, which are low cost and have broad diagnostic applications. (AU)

• FAPESP's process: 14/50951-4 - INCT 2014: Advanced Analytical Technologies
• Grantee: Celio Pasquini
• Support Opportunities: Research Projects - Thematic Grants