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Tailoring Optical Forces Behavior in Nano-optomechanical Devices Immersed in Fluid Media
Janderson R Rodrigues1,2, Vilson R Almeida3,4
1Instituto Tecnológico de Aeronáutica, São José dos Campos, SP, 12228-900, Brazil. jrr@ita.br.
Scientific Reports
|November 1, 2017
Summary
This study demonstrates how optical forces in nano-optofluidic devices can be tuned by changing the refractive index of surrounding liquids. This control enables new nanophotonic devices for applications like biomedical sensing.
Area of Science:
- Nanophotonics
- Optofluidics
- Microfluidics
- Optomechanics
Background:
- Nano-optofluidic devices integrate photonic circuits and microfluidics for nanoscale manipulation.
- Optical gradient forces offer precise control in nano-optomechanical systems.
Purpose of the Study:
- To investigate the influence of fluid refractive index on optical forces in slot-waveguide optomechanical devices.
- To demonstrate a method for tailoring repulsive optical forces in dielectric liquids.
Main Methods:
- Utilized a slot-waveguide optomechanical device.
- Analyzed the repulsive optical forces of antisymmetric eigenmodes.
- Varied the refractive index of the immersing dielectric liquid medium.
Main Results:
- Repulsive optical forces increased with increasing refractive index of the fluid medium.
- Demonstrated feasible tailoring of optical forces by immersing devices in dielectric liquids.
Conclusions:
- Control over attractive and repulsive optical forces in liquids is achievable.
- Potential for designing novel nanophotonic devices with microfluidic and nanomechanical functions.
- Applications include biomedical sensors, manipulators, and sorters.
