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Related Experiment Video

Updated: May 14, 2026

Label-free Single Molecule Detection Using Microtoroid Optical Resonators
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Polymer dual ring resonators for label-free optical biosensing using microfluidics.

Muhammad H M Salleh1, Andrew Glidle, Marc Sorel

  • 1Department of CTS, Kulliyyah of Science, International Islamic University Malaysia, 25200 Kuantan, Pahang, Malaysia.

Chemical Communications (Cambridge, England)
|February 12, 2013
PubMed
Summary

A novel polymer resonator microfluidic biosensor simplifies fabrication. This device enables sensitive, label-free chemical and biological sensing in solution using visible light.

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Area of Science:

  • Polymer microfluidics
  • Optical biosensing
  • Nanophotonics

Background:

  • Traditional microfluidic biosensors often involve complex and costly manufacturing processes.
  • Existing biosensing technologies may require labels, adding complexity and cost.
  • Limitations in sensitivity and detection methods hinder widespread application.

Purpose of the Study:

  • To develop a simplified fabrication method for microfluidic biosensors.
  • To demonstrate a highly sensitive, label-free biosensing platform.
  • To utilize polymer-based photonic configurations for enhanced sensing capabilities.

Main Methods:

  • Fabrication of a gapless light coupling photonic configuration using SU8 polymer.
  • Integration of the photonic configuration into a microfluidic device.

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  • Testing the biosensor's performance for chemical and biological analyte detection.

    • Main Results:

    • Successful demonstration of a polymer resonator microfluidic biosensor with simplified manufacturing.
    • Achieved high sensitivity in label-free chemical sensing in solution.
    • Demonstrated high sensitivity in biological sensing applications at visible wavelengths.

    Conclusions:

    • The developed polymer resonator microfluidic biosensor offers a cost-effective and efficient alternative to traditional devices.
    • The gapless light coupling photonic configuration enables sensitive, label-free detection.
    • This technology holds promise for various applications in chemical analysis and biological detection.