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Electrostatically tunable plasmonic devices fabricated on multi-photon polymerized three-dimensional microsprings.
Optics Express
|February 3, 2016
Summary
Researchers created tunable plasmonic devices using 3D microsprings and gold. Applying voltage allowed continuous control over plasmon excitation efficiency, paving the way for advanced optoelectronics and metamaterials.
Area of Science:
- Nanotechnology
- Materials Science
- Optoelectronics
Background:
- Plasmonic devices offer unique light-matter interaction properties.
- Dynamic tunability is crucial for advanced optical applications.
- Three-dimensional (3D) microstructures provide novel platforms for device fabrication.
Purpose of the Study:
- To fabricate electrostatically tunable plasmonic devices on 3D microsprings.
- To investigate the control of plasmon excitation efficiency via electrostatic tuning.
- To demonstrate the potential for highly integrated optoelectronic devices and tunable metamaterials.
Main Methods:
- Fabrication using multi-photon polymerization and metal deposition.
- Integration of a nanostructured gold (Au) microplate with two 3D microsprings.
- Application of DC voltage to control microplate inclination and plasmonic response.
Main Results:
- Achieved maximum plasmon excitation efficiency of 35% at 632.8 nm wavelength.
- Demonstrated continuous tuning of efficiency from near zero to maximum by inclining microplates.
- Showcased dynamic control with DC voltage up to 50 V.
Conclusions:
- Electrostatically tunable plasmonic devices on 3D microsprings are feasible.
- The developed devices exhibit dynamic control over plasmon excitation.
- This technology is promising for developing integrated optoelectronics and tunable metamaterials.
