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Fabrication and Testing of Microfluidic Optomechanical Oscillators

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Magnetorheological polydimethylsiloxane micro-optical resonator.

Tindaro Ioppolo¹, M Volkan Otügen

¹Mechanical Engineering Department, Micro-sensor Laboratory, Southern Methodist University, Dallas, Texas 75205, USA. ioppolo@engr.smu.edu

|June 16, 2010

Summary

This summary is machine-generated.

Magnetorheological polydimethylsiloxane (MR-PDMS) spheres show tunable whispering gallery modes (WGM) under magnetic fields. These MR-PDMS spheres can function as high-Q-factor tunable optical cavities for sensing applications.

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Last Updated: Jun 12, 2026

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

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Published on: January 29, 2013

Area of Science:

Optics and Photonics
Materials Science
Micro-optics

Background:

Whispering gallery modes (WGM) are sensitive to micro-resonator properties.
Magnetorheological materials offer tunable mechanical responses.
Developing tunable optical cavities is crucial for advanced photonic devices.

Purpose of the Study:

To investigate magnetorheological polydimethylsiloxane (MR-PDMS) spheres as micro-optical resonators.
To study the effect of magnetic fields on the WGM of MR-PDMS microspheres.
To assess the potential of these spheres as tunable optical cavities.

Main Methods:

Fabrication of MR-PDMS microspheres containing magnetically polarizable particles.
Theoretical analysis to estimate WGM shifts under an external magnetic field.
Experimental demonstration of magnetic field-induced WGM shifts in MR-PDMS microspheres.

Main Results:

Applied magnetic fields induce mechanical deformation in MR-PDMS microspheres.
This deformation causes measurable shifts in the WGM spectra.
The study successfully demonstrated magnetic field-tunable WGM shifts.

Conclusions:

MR-PDMS microspheres exhibit tunable optical properties via external magnetic fields.
These spheres function as high-Q-factor tunable optical cavities.
Potential applications in optical sensing and tunable photonic devices are highlighted.