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Updated: May 7, 2026

Fabrication of Silica Ultra High Quality Factor Microresonators

Fabrication of Silica Ultra High Quality Factor Microresonators

Published on: July 2, 2012

High quality factor silica microspheres functionalized with self-assembled nanomaterials.

Ishac Kandas, Baigang Zhang, Chalongrat Daengngam

|October 10, 2013

Summary

Researchers functionalized silica microspheres with nonlinear and plasmonic nanomaterials using layer-by-layer self-assembly. This method maintained high cavity quality (Q) factors, enabling new applications for optical resonators.

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Last Updated: May 7, 2026

Fabrication of Silica Ultra High Quality Factor Microresonators

Fabrication of Silica Ultra High Quality Factor Microresonators

Published on: July 2, 2012

Preparation of Silica Nanoparticles Through Microwave-assisted Acid-catalysis

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Creating Sub-50 Nm Nanofluidic Junctions in PDMS Microfluidic Chip via Self-Assembly Process of Colloidal Particles

Creating Sub-50 Nm Nanofluidic Junctions in PDMS Microfluidic Chip via Self-Assembly Process of Colloidal Particles

Published on: March 13, 2016

Area of Science:

Optics and Photonics
Materials Science
Nanotechnology

Background:

Silica-based optical resonators offer high cavity quality (Q) factors due to low material absorption and surface smoothness.
Intrinsic limitations of silica, such as lack of second-order nonlinearity, restrict their applications.
Functionalization is needed to enhance the capabilities of silica resonators.

Purpose of the Study:

To functionalize silica microspheres with nonlinear and plasmonic nanomaterials.
To maintain high Q factors in functionalized silica resonators.
To explore new applications for high-Q optical resonators.

Main Methods:

Utilizing layer-by-layer self-assembly for material functionalization.
Coating silica microspheres with selected nanomaterials.
Measuring cavity quality (Q) factors of the functionalized resonators.

Main Results:

Successfully functionalized silica microspheres with nonlinear and plasmonic nanomaterials.
Maintained high Q factors, reaching values as high as 10^7.
Experimental Q factor measurements showed good agreement with theoretical estimates.

Conclusions:

Layer-by-layer self-assembly is an effective method for functionalizing high-Q silica resonators.
Functionalized resonators overcome silica's intrinsic material limitations.
This approach opens possibilities for advanced applications in nonlinear optics and sensing.