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Development of Whispering Gallery Mode Polymeric Micro-optical Electric Field Sensors
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Optical Whispering-Gallery-Mode Microbubble Sensors.

Xuyang Zhao1, Zhihe Guo1, Yi Zhou1

  • 1The Key Laboratory of Micro and Nano Photonic Structures, Department of Optical Science and Engineering, Fudan University, Shanghai 200438, China.

Micromachines
|April 23, 2022
PubMed
Summary
This summary is machine-generated.

Whispering-gallery-mode (WGM) microbubble resonators offer high sensitivity for detecting ultra-low concentrations in environmental and life science applications. This review covers their sensing mechanisms, fabrication, and diverse applications in optofluidics.

Keywords:
microfluidic technologyoptical microbubble resonatorsensorswhispering-gallery-mode microcavity

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Area of Science:

  • Optofluidics
  • Optical Sensing
  • Microfluidics

Background:

  • Whispering-gallery-mode (WGM) microbubble resonators possess unique optical properties like high quality factor and small mode volume.
  • Their hollow microfluidic channels enable strong light-matter interactions, crucial for sensing applications.

Purpose of the Study:

  • To systematically review and summarize sensing mechanisms, fabrication, and applications of optofluidic WGM microbubble resonators.
  • To highlight their potential in chemical, biological, and physical sensing.

Main Methods:

  • Review of existing literature on WGM microbubble resonator technology.
  • Analysis of sensing principles, fabrication techniques, and packing methods.
  • Compilation of diverse application examples in environmental monitoring and life sciences.

Main Results:

  • WGM microbubble resonators demonstrate high sensitivity for detecting ultra-low concentrations over a large dynamic range.
  • They are applicable for both chemical/biological sensing and physical sensing (temperature, pressure, magnetic fields, etc.).
  • Optofluidic integration enhances their sensing capabilities.

Conclusions:

  • Optofluidic WGM microbubble resonators are versatile and highly sensitive optical sensors.
  • Further research is needed to address challenges in rapid production and practical implementation.
  • Their potential spans environmental monitoring, life sciences, and various physical sensing domains.