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Synthesis and Operation of Fluorescent-core Microcavities for Refractometric Sensing
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Optical Microresonators for Sensing and Transduction: A Materials Perspective.

Kevin D Heylman1, Kassandra A Knapper1, Erik H Horak1

  • 1Department of Chemistry, University of Wisconsin, 1101 University Ave, Madison, WI, 53706, USA.

Advanced Materials (Deerfield Beach, Fla.)
|June 20, 2017
PubMed
Summary

Optical microresonator sensors offer high sensitivity and broad applications. Advances in materials and fabrication enable new functionalities, leading to unparalleled sensing capabilities for diverse analytes and environments.

Keywords:
label-free sensingoptical microcavityoptical microresonatorssensingspectroscopy

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Area of Science:

  • Photonics and Material Science
  • Nanotechnology and Sensor Development

Background:

  • Optical microresonators confine light and are sensitive to their environment, making them effective sensors.
  • Advancements in materials, fabrication, and sensing strategies enhance microresonator functionalities and sensitivity.

Purpose of the Study:

  • To review the operating principles and signal transduction methods of optical microresonator sensors.
  • To evaluate the coupling of material choice, fabrication innovations, and sensing strategies.
  • To highlight emerging capabilities and future directions in microresonator sensing.

Main Methods:

  • Review of operating principles for optical microresonator sensors.
  • Evaluation of various signal transduction methods.
  • Analysis of material selection and fabrication techniques in relation to analytes.

Main Results:

  • Optical microresonators serve as highly effective sensors and transducers due to their light-confining properties and environmental sensitivity.
  • Diverse applications demonstrated, including electric/magnetic field sensing, mechanical sensing, single-molecule detection, imaging, and spectroscopy.
  • Capabilities span from high vacuum to in-vivo cellular environments.

Conclusions:

  • Innovations in fabrication and sensing are crucial for advancing microresonator sensor technology.
  • Future directions involve combining diverse capabilities and improving scalability for highly sensitive, information-rich sensors.
  • Optical microresonator sensors represent a rapidly evolving field with immense potential for future technological integration.