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Bioinspired multistructured paper microfluidics for POCT.

Bingbing Gao1, Yaqiong Yang1, Junlong Liao2

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|October 8, 2019
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Summary

Researchers developed novel flexible multistructured pseudo-papers (MSPs) for advanced point-of-care testing (POCT). These bioinspired materials enable sensitive detection of cardiac and cancer markers, paving the way for improved diagnostics.

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Area of Science:

  • Materials Science
  • Biomedical Engineering
  • Analytical Chemistry

Background:

  • The demand for sensitive, miniaturized, and multifunctional point-of-care testing (POCT) drives the need for advanced flexible substrates.
  • Current flexible materials often lack the complex structures required for integrated diagnostic functionalities.

Purpose of the Study:

  • To introduce multistructured pseudo-papers (MSPs) as a versatile platform for fabricating flexible microfluidics.
  • To demonstrate the potential of MSPs in developing high-performance microfluidic sensors for disease marker detection.

Main Methods:

  • Fabrication of freestanding MSPs using self-assembled colloidal crystals on PDMS molds.
  • Creation of nitrocellulose (NC MSPs) and elastic copolymer (EC MSPs) with ordered micropillar and nanocrystal structures.
  • Patterning MSPs using designed PDMS molds to create microfluidic channels for sensor applications.

Main Results:

  • MSPs exhibit unique properties including pumpless liquid transport and enhanced fluorescence and chemiluminescence.
  • Successfully fabricated microfluidic sensors using MSPs for detecting human cardiac and cancer markers.
  • Demonstrated the bioinspired design's capability for sensitive analyte detection.

Conclusions:

  • MSPs offer a promising platform for flexible microfluidics with potential for enhanced sensing capabilities.
  • The developed MSPs show significant potential for broader applications in sensitive diagnostics and other fields.
  • This work highlights a novel approach to creating functional, flexible materials for advanced analytical devices.