4.5 Article

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

期刊

REVIEW OF SCIENTIFIC INSTRUMENTS
卷 92, 期 3, 页码 -

出版社

AMER INST PHYSICS
DOI: 10.1063/5.0010988

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资金

  1. CoordenacAo de Aperfeicoamento de Pessoal de Nivel Superior-Brasil (CAPES) (PNPD) [001, 88882.317935/2019-01]
  2. Conselho Nacional de Desenvolvimento Cientifico e Tecnologico-Brasil (CNPq) [303393/2018-1, 302349/2016-2, 465768/2014-8]
  3. FundacAo de Amparo a Pesquisa do Estado de SAo Paulo-Brasil (FAPESP) [2014/50951-4]

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Real-time observation of water and oil diffusion dynamics using video images, accurate localization of the liquid front achieved through Savitzky-Golay derivative filtering. System identification shows that a fractional-order model with only two parameters can describe the diffusion process dynamics. This method opens the way for video-based cellulose filter paper microfluidics and lateral flow assays, which are cost-effective and have broad diagnostic applications.
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.

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