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Related Experiment Video

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FRET Imaging in Three-dimensional Hydrogels
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Photonic hydrogel sensors.

Ali K Yetisen1, Haider Butt2, Lisa R Volpatti3

  • 1Harvard Medical School, Wellman Center for Photomedicine, Massachusetts General Hospital, 65 Landsdowne Street, Cambridge, MA 02139, USA.

Biotechnology Advances
|October 21, 2015
PubMed
Summary

Analyte-sensitive hydrogels with optical structures offer advanced point-of-care diagnostics. These photonic hydrogel sensors provide label-free, reusable, and continuous measurements for diverse clinical applications.

Keywords:
Block copolymersBragg stacksCrystalline colloidal arraysHolographyHydrogelsIn vitro diagnosticsInverse opalsLayer-by-layer depositionPhotonic crystalsPlasmonics

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Area of Science:

  • Materials Science
  • Biomedical Engineering
  • Analytical Chemistry

Background:

  • Hydrogel sensors are crucial for point-of-care diagnostics.
  • Optical structures enhance hydrogel sensor capabilities.
  • Current limitations in conventional assay formats necessitate novel sensing platforms.

Purpose of the Study:

  • To review the principles, synthesis, and applications of photonic hydrogel sensors.
  • To highlight the advantages of these sensors for diagnostics.
  • To identify future research directions in the field.

Main Methods:

  • Discusses the design and fabrication of hydrogel sensors via self-assembly, microfabrication, and laser writing.
  • Explains the operation principles of photonic hydrogel sensors.
  • Reviews stimuli-responsive polymer synthesis and readout technologies.

Main Results:

  • Photonic hydrogel sensors offer label-free, quantitative, reusable, and continuous measurements.
  • These sensors can be integrated with equipment-free display options.
  • Successful applications in clinical samples have been demonstrated.

Conclusions:

  • Photonic hydrogel sensors represent a significant advancement in diagnostic technology.
  • Their versatility and performance characteristics position them for widespread adoption.
  • Further research will expand their utility in clinical settings.