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Related Experiment Videos

A universal biosensing platform based on optical micro-ring resonators.

A Ramachandran1, S Wang, J Clarke

  • 1Nomadics Inc, Stillwater, OK 74074, USA.

Biosensors & Bioelectronics
|October 30, 2007
PubMed
Summary
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This study demonstrates optical micro-ring resonators for rapid, label-free biosensing. The silicon chip platform enables specific detection of bacteria, proteins, and nucleic acids.

Area of Science:

  • Optoelectronics
  • Nanotechnology
  • Biotechnology

Background:

  • Optical micro-ring resonators offer a sensitive platform for biosensing.
  • High refractive index materials enhance resonator performance.
  • Silicon photonics enables miniaturized optical sensing devices.

Purpose of the Study:

  • To explore optical micro-ring resonators for quantitative and qualitative biosensing.
  • To develop a label-free detection system for biological analytes.
  • To assess the specificity and speed of the micro-ring resonator biosensor.

Main Methods:

  • Fabrication of vertically coupled, high refractive index micro-ring resonators on silicon chips using photolithography.
  • Utilizing a near-infrared broadband light source and optical spectrum analyzer for data acquisition.

Related Experiment Videos

  • Surface modification of resonators with antibodies and single-stranded DNA oligonucleotides as specific receptors.

    • Main Results:

    • Successful label-free detection of whole bacterial cells.
    • Specific and rapid detection of proteins.
    • Sensitive detection of nucleic acids using the micro-ring resonator system.

    Conclusions:

    • Optical micro-ring resonators provide a versatile platform for advanced biosensing.
    • The developed system demonstrates high specificity and rapid detection capabilities.
    • This technology holds potential for diverse biological and medical diagnostic applications.