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Label-free Single Molecule Detection Using Microtoroid Optical Resonators
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Microgel assisted Lab-on-Fiber Optrode.

A Aliberti1, A Ricciardi1, M Giaquinto1

  • 1Optoelectronics Group, Department of Engineering, University of Sannio, I-82100, Benevento, Italy.

Scientific Reports
|November 2, 2017
PubMed
Summary
This summary is machine-generated.

This study introduces a novel biosensing platform combining Lab-On-Fiber probes with microgels. This innovative approach significantly enhances sensitivity for detecting small molecules in precision medicine applications.

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Area of Science:

  • Biomedical Engineering
  • Nanotechnology
  • Analytical Chemistry

Background:

  • Precision medicine requires sensitive point-of-care diagnostic systems for in-vivo analysis.
  • Existing Lab-On-Fiber biosensing probes using label-free detection struggle with low sensitivity for small molecules.
  • There is a need for enhanced biosensing platforms capable of detecting analytes at low concentrations.

Purpose of the Study:

  • To develop a highly sensitive label-free biosensing platform for precision medicine.
  • To overcome the sensitivity limitations of current biosensing technologies for small molecule detection.
  • To create a reconfigurable biosensing platform adaptable to various applications.

Main Methods:

  • Integration of microgels directly onto the fiber tip's resonant plasmonic nanostructure.
  • Utilizing Lab-On-Fiber technology combined with microgel properties.
  • Exploiting microgel network's ability to concentrate target molecules and amplify optical signals.

Main Results:

  • Achieved remarkable sensitivity enhancement in label-free biosensing.
  • Demonstrated control over the limit of detection, working range, and response time by tuning microgel properties (concentration, temperature).
  • Successfully developed a platform overcoming sensitivity limitations for small molecule detection.

Conclusions:

  • The developed microgel-integrated Lab-On-Fiber platform offers a significant advancement in biosensing sensitivity.
  • This technology enables highly sensitive, label-free detection of small molecules, crucial for precision medicine.
  • The reconfigurable nature of the platform makes it suitable for diverse and advanced biosensing applications.