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Fabrication of Three-dimensional Paper-based Microfluidic Devices for Immunoassays
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USB powered microfluidic paper-based analytical devices.

Federico Schaumburg1, Pablo A Kler2,3, Cody S Carrell4

  • 1INTEC (Universidad Nacional del Litoral - CONICET), Santa Fe, Argentina.

Electrophoresis
|November 3, 2019
PubMed
Summary
This summary is machine-generated.

USB-powered microfluidic paper-based analytical devices (μPADs) enhance sensitivity for portable chemical analysis. This fusion offers improved performance without complex instrumentation, suitable for resource-limited settings.

Keywords:
IsotachophoresisNumerical prototypingPaper-based microfluidicsUniversal Serial Bus

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Area of Science:

  • Analytical Chemistry
  • Microfluidics
  • Biomedical Engineering

Background:

  • Microfluidic paper-based analytical devices (μPADs) offer portable chemical analysis but suffer from low sensitivity.
  • Existing sensitivity enhancement methods often require bulky, non-portable equipment.
  • Universal Serial Bus (USB) power offers a portable and accessible power source.

Purpose of the Study:

  • To develop and evaluate USB-powered μPADs (USB μPADs) for enhanced sensitivity and portability.
  • To investigate the performance of origami-based and novel ITP USB μPAD designs.
  • To demonstrate a fusion of μPADs and USB technology for improved analytical capabilities.

Main Methods:

  • Fabrication of two μPADs powered by a 5V USB source.
  • Experimental and numerical analysis of an origami-based ITP USB μPAD.
  • Numerical prototyping of a novel ITP USB μPAD design utilizing capillary action for sample/electrolyte transport.

Main Results:

  • The origami-based ITP USB μPAD achieved two orders of magnitude of sample focusing in 15 minutes.
  • The novel ITP USB μPAD design predicted a 25-fold sample focusing in 10 minutes.
  • Both designs demonstrate improved sample focusing without increased instrumental complexity.

Conclusions:

  • USB μPADs represent a promising advancement for sensitive, portable chemical analysis.
  • The developed USB μPADs are suitable for applications in resource-limited settings, point-of-care diagnostics, and emergency situations.
  • This technology fusion enhances analytical performance while maintaining user-friendliness and portability.